3UG4632-1AA30

© Siemens AG 2007 Monitoring Relays 3UG Monitoring Relays for Electrical and Additional Measurements Line monitoring ■ Overview Solid-state line monitoring relays provide maximum protection for mobile machines and plants or for unstable networks. Network and voltage faults can be detected early and rectified before far greater damage ensues. Depending on the version, the relays monitor phase sequence, phase failure with and without N conductor monitoring, phase unbalance, undervoltage or overvoltage. With the 3UG46 17 or 3UG46 18 relay, a wrong direction of rotation can also be corrected automatically. ■ Function 3UG45 11 monitoring relays 3UG45 12 monitoring relays The 3UG45 11 phase sequenced relay monitors the phase sequence in a three-phase network. No adjustments are required for operation. The device has an internal power supply and works using the closed-circuit principle. If the phase sequence at the terminals L1-L2-L3 is correct, the output relay picks up after the delay time has elapsed and the LED is lit. If the phase sequence is wrong, the output relay remains in its rest position. The 3UG45 12 line monitoring relay monitors three-phase networks with regard to phase sequence, phase failure and phase unbalance of 10 %. Thanks to a special measuring method, a phase failure is reliably detected in spite of the wide voltage range from 160 to 690 V AC and feedback through the load of up to 90 %. The device has an internal power supply and works using the closed-circuit principle. No adjustments are required. When the mains voltage is switched on, the green LED is lit. If the phase sequence at the terminals L1-L2-L3 is correct, the output relay picks up. If the phase sequence is wrong, the red LED flashes and the output relay remains in its rest position. If a phase fails, the red LED is permanently lit and the output relay drops. Note: When one phase fails, connected loads (motor windings, lamps, transformers, coils, etc.) create a feedback voltage at the terminal of the failed phase due to the network coupling. Because the 3UG45 11 relays are not resistant to voltage feedback, such a phase failure is not detected. Should this be required, then the 3UG45 12 monitoring relay must be used. Correct phase sequence Note: The red LED is a fault diagnostic indicator and does not show the current relay status. The 3UG45 12 monitoring relay is suitable for line frequencies of 50/60 Hz. Phase failure L1-L2-L3 L1-L2-L3 11/14 11/14 11/12 11/12 NSB0_01567 ON L2-L3 7 L1-L2-L3 21/22 NSB0_01565 21/24 21/24 21/22 LED rd OFF Wrong phase sequence ON Phase loss OFF Wrong phase sequence L3-L2-L1 11/14 L3-L2-L1 11/12 11/14 NSB0_01568 OFF 11/12 21/24 21/22 NSB0_01566 21/24 21/22 LED rd OFF FLASH OFF Phase sequence Siemens LV 1 T · 2007 7/61 © Siemens AG 2007 Monitoring Relays 3UG Monitoring Relays for Electrical and Additional Measurements Line monitoring 3UG45 13 monitoring relays 3UG46 14 monitoring relays The 3UG45 13 line monitoring relay monitors three-phase networks with regard to phase sequence, phase failure, phase unbalance of 20 % and undervoltage. The device has an internal power supply and works using the closed-circuit principle. The hysteresis is 5 %. The integrated response delay time is adjustable from 0 to 20 s and responds to undervoltage. If the direction is incorrect, the device switches off immediately. Thanks to a special measuring method, a phase failure is reliably detected in spite of the wide voltage range from 160 to 690 V AC and feedback through the load of up to 80 %. When the mains voltage is switched on, the green LED is lit. If the phase sequence at the terminals L1-L2-L3 is correct, the output relay picks up. If the phase sequence is wrong, the red LED flashes and the output relay remains in its rest position. If a phase fails, the red LED is permanently lit and the output relay drops. The 3UG46 14 line monitoring relay has a wide voltage range and an internal power supply. The device is equipped with a display and is parameterized using three buttons. It monitors threephase networks with regard to phase unbalance from 5 to 20 %, phase failure, undervoltage and phase sequence. The hysteresis is adjustable from 1 to 20 V. In addition the device has a response delay and ON-delay from 0 to 20 s in each case. The integrated response delay time responds to phase unbalance and undervoltage. If the direction is incorrect, the device switches off immediately. Thanks to a special measuring method, a phase failure is reliably detected in spite of the wide voltage range from 160 to 690 V AC and feedback up to 80 % through the load. Note: The red LED is a fault diagnostic indicator and does not show the current relay status. The 3UG45 13 monitoring relay is suitable for line frequencies of 50/60 Hz. The 3UG46 14 monitoring relay can be operated on the basis of either the open-circuit or closed-circuit principle and with manual or auto RESET. With the closed-circuit principle selected Wrong phase sequence Phase failure and undervoltage L3-L2-L1 L2-L3 L1-L2-L3 Hysteresis 5% -20% 3~U n 11/14 11/12 NSB0_01571 L1-L2-L3 21/24 11/14 21/22 11/12 Phase failure 21/24 21/22 NSB0_01569 LED rd ON Phase loss OFF Delay ON L2-L3 OFF 11/14 11/12 Wrong phase sequence 21/24 21/22 Undervoltage L3-L2-L1 7 L1-L2-L3 NSB0_01576 OFF L1-L2-L3 11/14 11/12 Hysteresis < NSB0_01570 x-y 21/24 21/22 11/14 OFF FLASH OFF Phase sequence NSB0_01577 11/12 LED rd 21/24 21/22 onDelay Delay Unbalance > Asy Hysteresis 2% 0% 11/14 NSB0_01578 11/12 21/24 21/22 Delay onDelay 7/62 Siemens LV 1 T · 2007 © Siemens AG 2007 Monitoring Relays 3UG Monitoring Relays for Electrical and Additional Measurements Line monitoring 3UG46 15/3UG46 16 monitoring relays 3UG46 17/3UG46 18 monitoring relays The 3UG46 15/3UG46 16 line monitoring relay has a wide voltage range and an internal power supply. The device is equipped with a display and is parameterized using three buttons. The 3UG46 15 device monitors three-phase networks with regard to phase failure, undervoltage, overvoltage and phase sequence. The 3UG46 16 monitoring relay monitors the neutral conductor as well. The hysteresis is adjustable from 1 to 20 V. In addition the device has two separately adjustable delay times for overvoltage and undervoltage from 0 to 20 s in each case. If the direction is incorrect, the device switches off immediately. Thanks to a special measuring method, a phase failure is reliably detected in spite of the wide voltage range from 160 to 690 V AC and feedback through the load of up to 80 %. The 3UG46 17/ 3UG46 18 line monitoring relay has an internal power supply and can automatically correct a wrong direction of rotation. Thanks to a special measuring method, a phase failure is reliably detected in spite of the wide voltage range from 160 to 690 V AC and feedback through the load of up to 80 %. The device is equipped with a display and is parameterized using three buttons. The 3UG46 17 line monitoring relay monitors three-phase networks with regard to phase sequence, phase failure, phase unbalance, undervoltage and overvoltage. The 3UG46 18 monitoring relay monitors the neutral conductor as well. The hysteresis is adjustable from 1 to 20 V. In addition the device has delay times from 0 to 20 s in each case for overvoltage, undervoltage, phase failure and phase unbalance. The 3UG46 17/ 3UG46 18 monitoring relay can be operated on the basis of either the open-circuit or closed-circuit principle and with manual or auto RESET. The one changeover contact is used for warning or disconnection in the event of line faults (voltage, unbalance), the other responds only to a wrong phase sequence. In conjunction with a contactor reversing assembly it is thus possible to change the direction automatically. The 3UG46 15/ 3UG46 16 monitoring relay can be operated on the basis of either the open-circuit or closed-circuit principle and with manual or auto RESET. With the closed-circuit principle selected Wrong phase sequence With the closed-circuit principle selected L3-L2-L1 Phase failure 11/14 11/12 L1-L2-L3 L1-L2-L3-N NSB0_01571 21/24 21/22 L2-L3 L1-L2-L3 L1-L2-L3 L1-L2-L3-N 11/14 11/12 Phase failure NSB0_01587 50 ms 21/24 21/22 L1-L2-L3 L2-L3 L1-L2-L3 L1-L2-L3-N L1-L2-L3 L1-L2-L3-N Undervoltage 11/14 Hysteresis < x-y 11/12 11/14 NSB0_01572 11/12 50 ms 21/24 21/22 Undervoltage 7 21/22 NSB0_01588 21/24 Delay x-y Hysteresis < Overvoltage > 11/14 Hysteresis x-y 11/12 11/14 NSB0_01573 21/22 11/12 50 ms Delay NSB0_01589 21/24 21/24 21/22 Delay Overvoltage Unbalance > Hysteresis Hysteresis 2% x-y > Asy 0% 11/14 11/14 11/12 21/24 21/22 Delay 50 ms NSB0_01590 NSB0_01574 11/12 21/24 21/22 Delay Siemens LV 1 T · 2007 7/63 © Siemens AG 2007 Monitoring Relays 3UG Monitoring Relays for Electrical and Additional Measurements Line monitoring ■ Technical specifications 3UG45 11..N20 3UG45 11..P20 3UG45 11..Q20 3UG45 12 320 … 500 420 … 690 160 … 690 -2/8 -- --2/8 2/2.5 2/3.5 2/4 3UG45 13 3UG46 14 3UG46 15 3UG46 16 3UG46 17 3UG46 18 7 General data Rated control supply voltage Us V 160 … 260 Rated frequency Hz 50/60 Rated power, typical • At 230 V AC • At 400 V AC • At 460 V AC W/VA W/VA W/VA 2/4 --- Width mm 22.5 RESET Auto-RESET Principle of operation Closed-circuit Availability time after application of Us ms 200 Response time on reaching a switching threshold ms Max. 450 Adjustable tripping delay time s -- Adjustable ON-delay time s -- Mains buffering time, min. ms 10 Rated insulation voltage Ui Degree of pollution 3 Overvoltage category III according to VDE 0110 V 690 Rated impulse withstand voltage kV 6 Permissible ambient temperature • During operation • During storage °C °C -25 … +60 -40 … +85 Automatic/manual Closed-circuit, open-circuit (3UG46 17/3UG46 18: closed-circuit) 1000 0.1 ... 20 0.1 … 20 EMC tests1) IEC 60947-1/ IEC 61000-6-2 / IEC 61000-6-4 Degree of protection • Enclosures • Terminals IP40 IP20 Vibration resistance according to IEC 60068-2-6 Hz/mm 1-6/15; 6-500, 20 m/s2 Shock resistance according to IEC 60068 Part 2-27 g/ms 15/11 mm2 mm2 AWG Nm M3 (standard screwdriver size 2 and Pozidriv 2) 1 x (0.5 ... 4) / 2 x (0.5 ... 2.5) 1 x (0.5 ... 2.5) / 2 x (0.5 ... 1.5) 2 x (20 ... 14) 0.8 … 1.2 mm2 mm2 2 x (0.25 ... 1.5) 2 x (0.25 ... 1.5) mm2 AWG 2 x (0.25 ... 1.5) 2 x (24 ... 16) Measuring range AC 50/60 Hz rms value V 160 ... 260 Setting range V Measuring accuracy % -- ±5 Repeat accuracy at constant parameters % -- ±1 -- –10 % referred to set value Conductor cross-section • Screw terminals - Solid - Finely stranded with end sleeve - AWG conductors, solid or stranded - Tightening torque • Spring-loaded terminals - Solid - Finely stranded, with end sleeves according to DIN 46228 - Finely stranded - AWG conductors, solid or stranded -- 30 Measuring circuit Setting accuracy 320 ... 500 420 ... 690 160 ... 690 200...690 -- Accuracy of digital display %/°C -- ±0.1 Hysteresis for voltage V -- 5 % of set value Hysteresis for unbalance % -- Deviation for frequency fluctuation % -- Note: This is a Class A product. In the household environment this device may cause radio interference. In this case the user must introduce suitable measures. 7/64 Siemens LV 1 T · 2007 –1 V +/-1 digit Deviations for temperature fluctuations 1) 160...690 1 ... 20 V 2 % of limit value ±1 % 2 % of limit value for 3UG46 17/ 3UG46 18 © Siemens AG 2007 Monitoring Relays 3UG Monitoring Relays for Electrical and Additional Measurements Line monitoring k 3UG45 11..N20 3UG45 11..P20 3UG45 11..Q20 3UG45 12 3UG45 13 3UG46 14 3UG46 15 3UG46 16 3UG46 17 3UG46 18 Control circuit Load capacity of the output relay • Thermal current limit Ith A 5 Rated operational current Ie at • AC-15/24 ... 400 V • DC-13/24 V • DC-13/125 V • DC-13/250 V A A A A 3 1 0.2 0.1 Minimum contact load at 17 V DC mA 5 Output relay with DIAZED fuse gL/gG operational class A 4 Electrical endurance AC-15 Million 0.1 oper. cycles Mechanical endurance Million 10 oper. cycles ■ Dimensional drawings 5 86 A B C 74 62 90 62 82 110 36 NSB0_01606 Type 15 22,5 3UG45 11-.A 3UG45 12-.A 3UG45 11-.B 3UG45 12-.B 3UG45 13 3UG46 14 3UG46 15 3UG46 17 3UG46 16 3UG46 18 A B C 7 15 22,5 Removable terminals Spring-loaded terminal 84 94 103 Screw terminal 83 92 102 Siemens LV 1 T · 2007 7/65 © Siemens AG 2007 Monitoring Relays 3UG Monitoring Relays for Electrical and Additional Measurements Line monitoring ■ Schematics 3UG45 11-.A 3UG45 12-.A 3UG46 16 3UG46 18 3UG45 11-.B 3UG45 12-.B 3UG45 13 3UG46 14 3UG46 15 3UG46 17 L 1 L 2 L 3 L 1 L 2 L 3 N L 1 L 2 L 3 L 1 L 2 L 3 1 1 L 1 3 U G 4 L 2 L 3 1 1 2 1 N 3 U G 4 N S B 0 _ 0 1 5 3 7 a 1 2 1 4 L 1 L 2 L 3 N S B 0 _ 0 1 5 3 6 a 1 2 1 4 2 2 2 4 N S B 0 _ 0 1 5 3 8 a 1 2 Position of the connection terminals 1 4 L 1 7/66 L 2 1 2 1 1 1 4 2 2 2 1 2 4 Siemens LV 1 T · 2007 N L 3 L 1 L 2 L 3 1 2 1 1 1 4 2 2 2 1 2 4 N S B 0 _ 0 1 6 1 0 1 1 L 3 7 1 2 L 2 N S B 0 _ 0 1 6 0 8 L 1 3UG46 16 3UG46 18 3UG45 11-.B 3UG45 12-.B 3UG45 13 3UG46 14 3UG46 15 3UG46 17 N S B 0 _ 0 1 6 0 9 3UG45 11-.A 3UG45 12-.A 2 1 1 1 3 U G 4 1 4 2 2 2 4 © Siemens AG 2007 Monitoring Relays 3UG Monitoring Relays for Electrical and Additional Measurements Voltage monitoring ■ Overview The relays monitor single-phase AC and DC voltages against the set threshold value for overshoot and undershoot. The products differ with regard to their power supply (internal or external). ■ Function Undervoltage The 3UG46 33 voltage monitoring relay has an internal power supply and performs overshoot, undershoot or window monitoring of the voltage depending on how it is parameterized. The device is equipped with a display and is parameterized using three buttons. The operating and measuring range extends from 17 V to 275 V AC/DC. The threshold values for overshoot or undershoot can be freely configured within this range. If one of these threshold values is reached, the output relay responds according to the set principle of operation as soon as the tripping delay time has elapsed. This delay time UDel can be set from 0.1 to 20 s like the ON-delay time onDel. A1-A2 = < Hysteresis =0 NSB0_01585 3UG46 33 monitoring relays 11/14 11/12 onDelay Delay The hysteresis is adjustable from 0.1 to 150 V. The device can be operated on the basis of either the open-circuit or closed-circuit principle and with manual or auto RESET. One output changeover contact is available as signaling contact. With the closed-circuit principle selected A1-A2 = A1-A2 = > 7 Window monitoring Overvoltage < > Hysteresis Hysteresis NSB0_01584 =0 11/14 11/12 onDelay Delay =0 NSB0_01586 Hysteresis 11/14 11/12 onDelay Delay Delay Delay = Delay Siemens LV 1 T · 2007 7/67 © Siemens AG 2007 Monitoring Relays 3UG Monitoring Relays for Electrical and Additional Measurements Voltage monitoring Undervoltage The 3UG46 31/3UG46 32 voltage monitoring relay is supplied with an auxiliary voltage of 24 V AC/DC or 24 to 240 V AC/DC and performs overshoot, undershoot or window monitoring of the voltage depending on how it is parameterized. The device is equipped with a display and is parameterized using three buttons. The measuring range extends from 0.1 V to 60 V or 10 to 600 V AC/DC. The threshold values for overshoot or undershoot can be freely configured within this range. If one of these threshold values is reached, the output relay responds according to the set principle of operation as soon as the delay time has elapsed. This delay time UDel can be set from 0.1 to 20 s. The hysteresis is adjustable from 0.1 to 30 V or 0.1 to 300 V. The device can be operated on the basis of either the open-circuit or closed-circuit principle and with manual or auto RESET. One output changeover contact is available as signaling contact. A1-A2 < Hysteresis =0 NSB0_01582 3UG46 31/3UG46 32 monitoring relays 11/14 11/12 Delay With the closed-circuit principle selected Overvoltage Window monitoring A1-A2 A1-A2 > < > Hysteresis Hysteresis =0 11/12 Delay NSB0_01583a NSB0_01581 Hysteresis 11/14 11/14 11/12 Delay Delay 7 Delay = 7/68 Siemens LV 1 T · 2007 Delay © Siemens AG 2007 Monitoring Relays 3UG Monitoring Relays for Electrical and Additional Measurements Voltage monitoring ■ Technical specifications 3UG46 31.AA 3UG46 31.AW 3UG46 32.AA 3UG46 32.AW 3UG46 33 V 24 AC/DC 24 ... 240 AC/DC 24 AC/DC 24 ... 240 AC/DC 17 ... 275 AC/DC Rated frequency for AC Hz 50/60 Operating range V 20.4 ... 27.6 20.4 ... 264 20.4 ... 27.6 20.4 ... 264 Rated power in W/VA VA 2/4 Width mm 22.5 General data Rated control supply voltage Us 40 ... 500 17...275 Automatic / manual RESET Availability time after application of Us ms 1000 Response time on reaching a switching threshold ms 450 Adjustable tripping delay time s 0.1 … 20 Adjustable ON-delay time s -- Mains buffering time, min. ms 10 Rated insulation voltage Ui Degree of pollution 3 Overvoltage category III according to VDE 0110 V 690 Rated impulse withstand voltage Uimp kV 6 Safe isolation according to EN 60947-1 V 300 Permissible ambient temperature • During operation • During storage °C °C -25 … +60 -40 … +85 0.1 ... 20 EMC tests1) IEC 60947-1 / IEC 61000-6-2 / IEC 61000-6-4 Degree of protection • Enclosures • Terminals IP40 IP20 Vibration resistance according to IEC 60068-2-6 Hz/mm 1-6/15; 6-500, 20 m/s2 Shock resistance according to IEC 60068 Part 2-27 g/ms 15/11 mm2 mm2 AWG Nm M3 (standard screwdriver size 2 and Pozidriv 2) 1 x (0.5 ... 4) / 2 x (0.5 ... 2.5) 1 x (0.5 ... 2.5) / 2 x (0.5 ... 1.5) 2 x (20 ... 14) 0.8 … 1.2 mm2 mm2 mm2 AWG 2 x (0.25 ... 1.5) 2 x (0.25 ... 1.5) 2 x (0.25 ... 1.5) 2 x (24 ... 16) Permissible measuring range single-phase AC/DC voltage V 0.1 … 68 10 … 650 17 … 275 Setting range single-phase voltage V 0.1 ... 60 10 ... 600 17 ... 275 Measuring frequency Hz 40 ... 500 Measuring accuracy % 5 Repeat accuracy at constant parameters % 1 Conductor cross-section • Screw terminals - Solid - Finely stranded with end sleeve - AWG conductors, solid or stranded - Tightening torque • Spring-loaded terminals - Solid - Finely stranded, with end sleeves according to DIN 46228 - Finely stranded - AWG conductors, solid or stranded 40 ... 500 –1 digit Accuracy of digital display Deviations for temperature fluctuations %/°C –0.1 Hysteresis for single-phase voltage V 0.1 ... 30 Load capacity of the output relay • Thermal current limit Ith A 5 Rated operational current Ie at • AC-15/24 ... 400 V • DC-13/24 V • DC-13/125 V • DC-13/250 V A A A A 3 1 0.2 0.1 Minimum contact load at 17 V DC mA 5 Output relay with DIAZED fuse gL/gG operational class A 4 Electrical endurance AC15 Million 0.1 oper. cycles Endurance with contactor relay Million 10 oper. cycles 0.1 ... 300 0.1 ... 150 Control circuit 1) Note: This is a Class A product. In the household environment this device may cause radio interference. In this case the user must introduce suitable measures. Siemens LV 1 T · 2007 7/69 7 Measuring circuit © Siemens AG 2007 Monitoring Relays 3UG Monitoring Relays for Electrical and Additional Measurements Voltage monitoring ■ Dimensional drawings 86 A B 74 62 72 110 5 1) NSB0_01699 15 22,5 Type 3UG46 31 3UG46 32 3UG46 33 3UG46 31 3UG46 32 3UG46 33 A B Spring-loaded terminal 84 94 Screw terminal 83 92 Removable terminals 1) For standard mounting rail according to EN 60715. ■ Schematics 3UG46 31-.AA30 3UG46 32-.AA30 3UG46 31-.AW30 3UG46 32-.AW30 A1(+) IN(+) U Load AC/DC U Load AC/DC A1(+) 11 3UG46 33 IN(+) AC/DC 11 NSB0_01614a 3UG46 31 3UG46 32 1 2 1 1 3UG46 33 M A 2 7/70 1 4 A 1 A 2 1 2 1 1 Siemens LV 1 T · 2007 1 4 N S B 0 _ 0 1 6 1 3 IN 12 14 A2(–) NSB0_01533b Position of the connection terminals N S B 0 _ 0 1 6 1 2 7 M(–) NSB0_01532b A 1 11 12 14 A2(–) M(–) 12 14 A2(–) A1(+) © Siemens AG 2007 Monitoring Relays 3UG Monitoring Relays for Electrical and Additional Measurements Current monitoring ■ Overview The relays monitor single-phase currents for overshoot and undershoot against the set threshold. They differ with regard to their measuring ranges and voltage types. ■ Function 3UG46 21/3UG46 22 monitoring relays The measuring range extends from 3 to 500 mA or 0.05 to 10 A. The rms value of the current is measured. The threshold values for overshoot or undershoot can be freely configured within this range. If one of these threshold values is reached, the output relay responds according to the set principle of operation as soon as the tripping delay time IDel has elapsed. This time and the ON-delay time onDel are adjustable from 0.1 to 20 s. The hysteresis is adjustable from 0.1 to 250 mA or 0.01 to 5 A. The device can be operated on the basis of either the opencircuit or closed-circuit principle and with manual or auto RESET. One output changeover contact is available as signaling contact. Current undershoot A1-A2 < Hysteresis =0 NSB0_01580 The 3UG46 21/3UG46 22 current monitoring relay is supplied with an auxiliary voltage of 24 V AC/DC or 24 to 240 V AC/DC and performs overshoot, undershoot or window monitoring of the current depending on how it is parameterized. The device is equipped with a display and is parameterized using three buttons. 11/14 11/12 onDelay Delay 7 With the closed-circuit principle selected Window monitoring Current overshoot A1-A2 A1-A2 > > < Hysteresis Hysteresis Hysteresis =0 11/14 11/12 onDelay NSB0_01626 NSB0_01579 =0 11/14 11/12 onDelay Delay Delay Delay = Delay Delay Siemens LV 1 T · 2007 7/71 © Siemens AG 2007 Monitoring Relays 3UG Monitoring Relays for Electrical and Additional Measurements Current monitoring ■ Technical specifications 3UG46 21-.AA 3UG46 21-.AW 3UG46 22-.AA 3UG46 22-.AW 24 … 240 24 24 … 240 20.4 ... 264 20.4 ... 26.4 20.4 ... 264 General data Rated control supply voltage Us V 24 Rated frequency Hz 50/60 Operating range V 20.4 ... 26.4 Rated power W/VA 2/4 Width mm 22.5 Automatic/ manual RESET Availability time after application of Us ms 1000 Response time on reaching a switching threshold ms 450 Adjustable tripping delay time s 0.1 … 20 Adjustable ON-delay time s 0.1 … 20 Mains buffering time, min. ms 10 Rated insulation voltage Ui Degree of pollution 3; overvoltage category III according to VDE 0110 V 690 Rated impulse withstand voltage Uimp kV 6 Safe isolation according to EN 60947-1 V 300 Permissible ambient temperature • During operation • During storage °C °C -25 … +60 -40 … +85 EMC tests1) IEC 60947-1/ IEC 61000-6-2 / IEC 61000-6-4 Degree of protection • Enclosure • Terminals IP40 IP20 Vibration resistance according to IEC 60068-2-6 Hz/mm 1-6/15; 6-500.20 m/s2 Shock resistance according to IEC 60068 Part 2-27 g/ms 15/11 mm2 mm2 AWG Nm M3 (standard screwdriver size 2 and Pozidriv 2) 1 x (0.5 ... 4) / 2 x (0.5 ... 2.5) 1 x (0.5 ... 2.5) / 2 x (0.5 ... 1.5) 2 x (20 ... 14) 0.8 … 1.2 mm2 mm2 mm2 AWG 2 x (0.25 ... 1.5) 2 x (0.25 ... 1.5) 2 x (0.25 ... 1.5) 2 x (24 ... 16) Measuring range for single-phase AC/DC current A 0.003 … 0.6 Setting range for single-phase current A 0.003 ... 0.5 Load supply voltage V 24 Measuring accuracy % 5 Repeat accuracy at constant parameters % 1 Conductor cross-section • Screw terminals - Solid - Finely stranded with end sleeve - AWG conductors, solid or stranded - Tightening torque • Spring-loaded terminals - Solid - Finely stranded, with end sleeves according to DIN 46228 - Finely stranded - AWG conductors, solid or stranded 7 Measuring circuit 0.05 ... 10 Max. 3002) Max. 5003) 24 –1 digit Accuracy of digital display Deviations for temperature fluctuations 0.05 … 15 %/°C Hysteresis for single-phase current –0.1 0.1 ... 250 mA 0.01 ... 5 A Permissible overcurrent, continuous A 0.6 15 Permissible overcurrent, < 1 s A 5 50 Protection against destruction, DIAZED gL/gG A 2 16 Measuring circuit internal resistance, shunt mW 500 5 Load capacity of the output relay • Thermal current limit Ith A 5 Rated operational current Ie at • AC-15/24 ... 400 V • DC-13/24 V • DC-13/125 V • DC-13/250 V A A A A 3 1 0.2 0.1 Minimum contact load at 17 V DC mA 5 Output relay with DIAZED fuse gL/gG A 4 Electrical endurance AC15 Million 0.1 oper. cycles Endurance with contactor relay Million 10 oper. cycles Control circuit 1) Note: This is a Class A product. In the household environment this device may cause radio interference. In this case the user must introduce suitable measures. 7/72 Siemens LV 1 T · 2007 2) With safe isolation. 3) With easy isolation. Max. 3002) Max. 5003) © Siemens AG 2007 Monitoring Relays 3UG Monitoring Relays for Electrical and Additional Measurements Current monitoring ■ Dimensional drawings 5 86 Type 3UG46 21 3UG46 22 A B Spring-loaded terminal 84 94 Screw terminal 83 92 A B 74 62 72 110 Removable terminals 1) For standard mounting rail according to EN 60715. 1) NSB0_01699 15 22,5 ■ Schematics Wiring diagram for 24 V AC/DC (only 3UG46 2.-.AA30) 3UG46 21-.AA30 3UG46 22-.AA30 Operation with joint control circuit and load circuit 24 V AC/DC 24 V AC/DC A1 IN 11 < > Load A1 o.k. IN 11 < > 12 A2 14 M 12 optional A2 14 M 24 V AC/DC o.k. ULoad Load IN A1 L1 L2 L3 24 V AC/DC NSB0_01200e Load From the following circuit diagrams it is clear that loads in measuring circuits have to be in the current flow upstream from the monitoring relay. Otherwise the monitoring relay could be destroyed and the short-circuit current could cause damage to the plant. NSB0_01199e ULoad NSB0_01708 NSB0_01534b Operation with separate control circuit and load circuit A1 IN < > < > MLoad A2 M 3UG46 21-.AW30 3UG46 22-.AW30 MLoad AC/DC A1 IN < > 11 12 14 M A2 L2 L3 o.k. o.k. A1 IN < > A2 11 12 24 V AC/DC 24 V AC/DC 14 A1 Load IN A1 L2 L3 < > IN 3UG3 < > M MLoad L1 7 ULoad Load Load L1 A2 M Load A2 M Load Position of the connection terminals NSB0_01198e AC/DC NSB0_01707 3-phase operation NSB0_01535b 1-phase operation M A2 NSB0_01197e 3UG46 21 3UG46 22 A 1 IN Configuring note: A2 and M are electrically connected internally! M For applications in which the load to be monitored and the monitoring relay are supplied from the same power supply, there is no need for connection A2! A 2 1 2 1 1 1 4 N S B 0 _ 0 1 6 1 1 The load current must always flow through M or the monitoring relay may be destroyed! Siemens LV 1 T · 2007 7/73 © Siemens AG 2007 Monitoring Relays 3UG Monitoring Relays for Electrical and Additional Measurements Power factor and active current monitoring ■ Overview The 3UG46 41 power factor and active current monitoring device enables the load monitoring of motors. Whereas power factor monitoring is used above all for monitoring no-load operation, the active current monitoring option can be used to observe and evaluate the load factor over the entire torque range. ■ Function 3UG46 41 monitoring relays With the closed-circuit principle selected The 3UG46 41 monitoring relay is self-powered and serves the single-phase monitoring of the power factor or performs overshoot, undershoot or window monitoring of the active current depending on how it is parameterized. Display outside the measuring range limits Lx-Ly/N The load to be monitored is connected in front of the IN terminal. The load current flows over the IN and Ly/N terminals. The setting range for the power factor is 0.1 ... 0.99 and for the active current Ires 0.2 ... 10 A. < 0,2 A = 0,2 A If the supply voltage is switched on and no load current is flowing, the display indicates I < 0.2 and a symbol for overshoot, undershoot or window monitoring. =0 11/14 The relay operates either according to the open-circuit or closed-circuit principle. NSB0_01658 If the operational flowing active current and/or the power factor value falls below or exceeds the respective set threshold value, the spike delay begins. When this time has expired, the relay changes its switch position. The relevant measured variables for overshooting and undershooting in the display flashes. 11/12 21/24 21/22 onDelay Overshooting of active current If the device is set to Auto-RESET (Memory = No), depending on the set principle of operation, the switching relay returns to its initial state and the flashing ends when the hysteresis threshold is reached. If manual reset is selected in the menu (Memory = Yes), the switching relay remains in its current switching state and the current measured value and the symbol for undershooting and overshooting continues to flash, even when the measured variable reaches a permissible value again. This stored fault status can be reset by pressing the UP▲ and DOWN▼ key simultaneously for 2 seconds, or by switching the supply voltage off and back on again. onDelay > res res Hysteresis =0 11/14 11/12 NSB0_01659 7 If the motor is now switched on and the current exceeds 0.2 A, the set ON-delay time begins. During this time, an undershooting or overshooting of the set limit values will not led to a relay response of the changeover contact. 21/24 21/22 onDelay 7/74 Siemens LV 1 T · 2007 Delay © Siemens AG 2007 Monitoring Relays 3UG Monitoring Relays for Electrical and Additional Measurements Power factor and active current monitoring Undershooting of power factor Undershooting of active current < cos res Hysteresis res Hysteresis 0,10 cos p.f. =0 cos 11/14 11/12 11/12 NSB0_01660 11/14 21/24 21/22 21/24 21/22 Delay onDelay Window monitoring of power factor Window monitoring of active current > res < > cos res res Hysteresis 0,10 Hysteresis res cos p.f. =0 11/14 11/12 11/12 NSB0_01661 11/14 21/24 21/22 Delay < cos cos Hysteresis onDelay Delay cos =0 NSB0_01664 onDelay =0 NSB0_01663 < 21/24 21/22 onDelay Delay Delay Delay Legend Overshooting of power factor 7 p.f.: power factor cos j: power factor > cos cos cos p.f. =0 Hysteresis 0,10 11/14 NSB0_01662 11/12 21/24 21/22 onDelay Delay Siemens LV 1 T · 2007 7/75 © Siemens AG 2007 Monitoring Relays 3UG Monitoring Relays for Electrical and Additional Measurements Power factor and active current monitoring ■ Technical specifications Type 3UG46 41 General data Rated control supply voltage Us V 90 … 690 Rated frequency Hz 50/60 Rated power, typical • At 200 V AC • At 400 V AC • At 460 V AC VA VA VA 2.0 2.7 3.1 Width mm 22.5 Automatic / manual RESET Closed-circuit principle, open-circuit principle Principle of operation Availability time after application of Us ms 1000 Response time on reaching a switching threshold ms 450 Adjustable tripping delay time s 0.1 ... 20 Adjustable ON-delay time s 0 ... 99 Mains buffering time, min. ms 10 Rated insulation voltage Ui Degree of pollution 3 Overvoltage category III according to VDE 0110 V 690 Rated impulse withstand voltage kV 6 Permissible ambient temperature • During operation • During storage °C °C -25 … +60 -40 … +85 EMC tests1) IEC 60947-1 / IEC 61000-6-2 / IEC 61000-6-4 Degree of protection • Enclosures • Terminals IP40 IP20 Vibration resistance according to IEC 60068-2-6 Hz/mm 5 ... 25/0.75 Shock resistance according to IEC 60068 Part 2-27 g/ms 15/11 mm2 mm2 AWG Nm M3 (standard screwdriver size 2 and Pozidriv 2) 1 x (0.5 ... 4) / 2 x (0.5 ... 2.5) 1 x (0.5 ... 2.5) / 2 x (0.5 ... 1.5) 2 x (20 ... 14) 0.8 … 1.2 mm2 mm2 mm2 AWG 2 x (0.25 ... 1.5) 2 x (0.25 ... 1.5) 2 x (0.25 ... 1.5) 2 x (24 ... 16) Measurable active current Ires A 0.2 ... 10 Max. permissible load current A 10 Peak current < 1 s A 50 Conductor cross-section • Screw terminals - Solid - Finely stranded with end sleeve - AWG conductors, solid or stranded - Tightening torque • Spring-loaded terminals - Solid - Finely stranded, with end sleeves according to DIN 46228 - Finely stranded - AWG conductors, solid or stranded 7 Measuring circuit 0.1 ... 0.99 Adjustable response value Phase displacement angle DIAZED protection, gL/gG operational class A 16 Measuring accuracy % 10 Repeat accuracy at constant parameters % 1 ± 1 digit Accuracy of digital display Deviations for temperature fluctuations %/°C Hysteresis Active current monitoring 1) A Note: This is a Class A product. In the household environment this device may cause radio interference. In this case the user must introduce suitable measures. 7/76 Siemens LV 1 T · 2007 ± 0.1 0.10 Hysteresis Phase angle 0.1 ... 2.0 © Siemens AG 2007 Monitoring Relays 3UG Monitoring Relays for Electrical and Additional Measurements Power factor and active current monitoring Type 3UG46 41 Control circuit 2 Number of CO contacts for auxiliary contacts Load capacity of the output relay • Thermal current Ith A 5 Rated operational current Ie at • AC-15/230 V • DC-13/24 V • DC-13/110 V • DC-13/230 V A A A A 3 1 0.2 0.1 Minimum contact load at 17 V DC mA 5 Output relay with DIAZED fuse gL/gG operational class A 4 Electrical endurance AC-15 Million oper. cycles 0.1 Mechanical endurance Million oper. cycles 10 ■ Dimensional drawings 86 A B 74 62 72 110 5 1) NSB0_01699 15 22,5 Type 3UG46 41 B Spring-loaded terminals 84 94 Screw terminal 83 92 7 A Removable terminals 1) For standard mounting rail according to EN 60715. Siemens LV 1 T · 2007 7/77 © Siemens AG 2007 Monitoring Relays 3UG Monitoring Relays for Electrical and Additional Measurements Power factor and active current monitoring ■ Schematics 1-phase motors 3-phase motors L/N Ln Ln Ln 3-phase motors with transformers for currents > 10 A Ln Ln Ln M 3~ n = 1,2,3 M 3~ n = 1,2,3 M 1~ Lx Lx IN 3UG46 41 12 11 cos 14 22 21 cos IN 3UG46 41 / 12 11 cos r 21 cos r NSB0_01654b Position of the connection terminals 11 14 22 21 24 7 12 NSB0_01657 Lx Ly/N IN 7/78 Siemens LV 1 T · 2007 12 11 cos r / 22 21 cos r 24 Ly/N NSB0_01655b / r / r 14 22 / N/L 3UG46 41 / IN 14 24 Ly/N Lx 3UG46 41 24 Ly/N NSB0_01656b © Siemens AG 2007 Monitoring Relays 3UG Monitoring Relays for Electrical and Additional Measurements Insulation monitoring for ungrounded AC networks ■ Overview Relay for monitoring the insulation resistance between the ungrounded single or three-phase AC supply and a protective conductor • Measuring principle with superimposed DC voltage • Two selectable measuring ranges of 1 ... 110 kW • Stepless setting within the measuring range • Selectable: - Auto reset function with fixed hysteresis or - Storage of the tripping operation • Test function with test button and terminal connections on the front • Switching output: 1 CO contact • Insulation fault indication with a red LED • Supply voltage indication with a green LED • Electro-magnetically compatible according to EN 50081 and EN 61000-6-2. ■ Function The monitoring relay measures the insulation resistance between the ungrounded AC supply and an associated protective conductor. A superposed DC measuring voltage is used to perform the measurement. The monitoring relay is divided into two ranges for an insulation resistance range from 1 ... 100 kW. A range switch on the front can be used to switch over between a 1 ... 11 kW range and a 10 ... 110 kW range. Within the selected range, the monitoring relay can be steplessly adapted to the respective insulation conditions. Note: The monitoring relay is designed for AC voltage systems. Series-connected rectifiers must be galvanically isolated from the measuring relay. 2 A1/A2 A1/B2 Y1/Y2 3 Y1/PE 1 NSB0_01393a If the insulation resistance undershoots the set response value, the output relay is excited and the red LED (fault indication) is lit. Test functions The "Test" button on the front can be used to simulate a ground fault. If the "Test" button is pressed for at least 300 ms, the output relay is energized and the fault LED lights up. An external test button can be connected to terminal Y1. The function is activated by closing (> 300 ms). 4 5 1 2 3 4 5 Fault storage and RESET 1,6 x Rvalue R Rvalue 11/14 11/12 tTest = Supply voltage A1-B2/A1-A2 for AC 115V/230V A1-A2 for AC/DC 24 … 240V = Remote connection-Save-Reset = Button on the front Test/Reset = Insulation resistance R of the network = Normally open contact 7 If the insulation resistance exceeds 1.6 times (corresponding to 60 % hysteresis) the set response value, the output relay will return to the rest position. tTest = > approx. 300 ms If terminals Y1 and Y2 are jumpered, the monitoring relay is set to fault storage mode. If the set insulation resistance is undershot, the output relay is excited and remains tripped even after the insulation resistance rises above 1.6 times the set value again. Fault storage can be reset by briefly pressing the RESET button, briefly jumpering (< 300 ms) the Y1 and PE/ground terminals or by switching off and on the supply voltage. Siemens LV 1 T · 2007 7/79 © Siemens AG 2007 Monitoring Relays 3UG Monitoring Relays for Electrical and Additional Measurements Insulation monitoring for ungrounded AC networks ■ Technical specifications 3UG30 81 Control circuit -15 %... +10 % Operating range of the control supply voltage 24 ... 240 V AC VA/W 8/2 110 ... 130 V AC VA 3 220 ... 240 V AC VA 3 Hz 50 ... 60 k k 1...110 100 • Minimum internal resistance for DC k 100 • DC measurement voltage V 30 DC • Insulation voltage V 415 AC Rated power Frequency of the rated control supply voltage Measuring circuit L/PE/ground • Response value • Minimum internal resistance for AC • Reset/test function terminals (max. 10 m) Y1-Y2 • Delay time in case of response s 1 1 CO contact, open-circuit principle Output relay General data Rated insulation voltage Ui Between supply, measurement, and output circuit V Overvoltage category According to IEC 664 Degree of pollution According to IEC 664 Impulse withstand voltage Uimp According to VDE 0435, Part 303 Degree of protection According to EN 60529 Shock resistance According to IEC 60068 Part 2-27 g/ms Vibration resistance According to IEC 60068-2-6 III 3 kV °C °C -25 ... 65 -40 ... 85 Any Conductor cross-section Solid mm2 2 x 0.75 ... 2.5 Finely stranded with end sleeve mm2 2 x 0.75 ... 2.5 NSB00982 7 57 79 90 100 ■ Dimensional drawings 77 100 ■ Schematics Connection diagram for networks up to 400 V AC 3 x 230/400 V AC R L1 L2 L3 L Test Reset A1 A2 B2 1) A2 B21) N 230 V N 115 V PE 11 14 12 Y1 PE Y2 N 230 V N 115 V 1 Siemens LV 1 T · 2007 ) Only 3UG3081-1AK20. NSB0_01394a A1 7/80 10 Hz/mm 10-55/0.35 Permissible mounting position A1-B2/A1-A2 for AC 115 V/230 V A1-A2 for AC/DC 24...240 V 4 IP50 enclosure, IP20 terminals Permissible ambient temperature • During operation • During storage 45 400 according to IEC 60947-1 © Siemens AG 2007 Monitoring Relays 3UG Monitoring Relays for Electrical and Additional Measurements Insulation monitoring for ungrounded DC networks ■ Overview Relay for monitoring the insulation resistance between ungrounded pure DC networks and a protective conductor • Measuring principle for differential current measurement • Response value can be set continuously from 10 ... 110 kW • Selectable - Auto reset function with hysteresis or - Storage of the tripping operation • Front selector switch for open-circuit and closed-circuit principle for the output relay • Test function with test buttons on the front for L+ and Land over terminal connections • Switching output: 1 CO contact • Insulation fault indicator for L+ and L- through two red LEDs • Supply voltage indication with a green LED • Electro-magnetically compatible according to EN 50081 and EN 61000-6-2. ■ Function The monitoring relay measures the insulation resistance between the positive and negative supply voltage in an ungrounded DC voltage network and a corresponding protective conductor. Open/closed-circuit principle selector switch The measurement is based on the DC residual current measurement principle. The response value can be adjusted steplessly in the range from 10 ... 110 kW and thus can be adapted to the corresponding conditions. If the insulation resistance falls below the set response value, the output relay triggers (depending on the setting of the open/closed-circuit principle selector switch) and a fault LED lights up. If the relay is to respond in the event of a fault (contact symbol open), the open-circuit principle must be selected. If the relay however is to trigger in the event of a fault (contact symbol closed), the closed-circuit principle must be selected. A ground fault is evaluated separately for L+ and L- and indicated by means of a corresponding LED. The position of the selector switch has no effect upon the fault LEDs. The LEDs always light up if the insulation resistance on L+ or L– falls below the set value. The principle of operation of the output relay can be adjusted by means of a selector switch on the front panel. Note: Note: Due to the measurement principle, a symmetrical ground fault on terminals L+ and L- cannot be evaluated. NSB0_01395a 1 A1/A2 2 A ground fault can be simulated using the Test L+ and Test L- buttons on the front. If the test button is pressed for at least 1 s, the status of the output relay changes and the corresponding fault LED lights up. An external test button can be connected to terminals Y1-Y3 for L+ and terminals Y4-Y3 for L-. The function is triggered by means of a NO contact. 3 Y3/Y4 4 Y1/Y3 5 Y2/Y3 6 RHyst R L+/PE L-/PE Rvalue Opencircuit/ closed circuit principle 11/14 11/12 tTest = approx. 1 s RHyst = typically 2 x Rx 7 8 Fault storage and RESET If terminals Y2 and Y3 are linked, the monitoring relay is set to fault storage mode. If the insulation resistance falls below the set value, the output relay triggers (depending on the setting of the open/closed circuit selector switch), and stays in this state even if the insulation resistance rises again above the hysteresis value (typical: 2 times the set value). This fault storage can be deleted by pressing and releasing the L+ RESET button, opening the Y2-Y3 connection or by switching off the supply voltage. 1 2 3 4 5 6 7 8 7 Test function tTest > Is = = = = = = Supply voltage Button on front – Reset L+ and L-/Test L+ Button on front – Test L – Test remote connection – Test L Test remote connection – Test L+ Test remote connection – Store, reset Insulation resistance R of supply set response value R = Switch on front Open-circuit/closed-circuit principle = NO contact Siemens LV 1 T · 2007 7/81 © Siemens AG 2007 Monitoring Relays 3UG Monitoring Relays for Electrical and Additional Measurements Insulation monitoring for ungrounded DC networks ■ Technical specifications 3UG30 82 Control circuit -15 %... +10 % Operating range of the control supply voltage 24 ... 240 V AC/DC Rated power Frequency of the rated control supply voltage VA/W 8/2 Hz 50 ... 60 Measuring circuit • Response value k 10 ... 110 • Minimum internal resistance for DC k 57 • Measurement DC voltage V 24 ... 240 • Max. DC insulation voltage (L+/PE/ground, L-/PE/ground) V DC 300 • Reset/test function terminals (max. 10 m) Y1/Y3, Y4/Y3 • Delay time in case of response s 1 1 changeover contact, open-circuit or closed-circuit principle Output relay General data Between supply, measurement, and output circuit According to IEC 664 According to IEC 664 V Impulse withstand voltage U.imp According to VDE 0435, Part 303 V Degree of protection According to EN 60529 Shock resistance According to IEC 60068 Part 2-27 g/ms Vibration resistance According to IEC 60068-2-6 Rated insulation voltage Ui Insulation resistance Overvoltage category Degree of pollution Permissible ambient temperature • During operation • During storage III 3 Any mm2 2 x 0.75 ... 2.5 Finely stranded with end sleeve mm2 2 x 0.75 ... 2.5 NSB00982 57 79 90 100 ■ Circuit diagram Connection diagram for 24...240 V DC 24...240 V DC L+ L 11 14 12 Test L+ Reset R Y1 Y2 Test L- N LPE 7/82 A2 L- Y4 PE Siemens LV 1 T · 2007 Y3 NSB0_01396 7 77 100 L+ -25 ... + 65 -40 ... + 85 Solid ■ Dimensional drawings A1 10 Hz/mm 10-55/0.35 °C °C Conductor cross-section 24...240 V AC/DC 4000 IP50 enclosure, IP20 terminals Permissible mounting position 45 400 © Siemens AG 2007 Monitoring Relays 3UG Monitoring Relays for Electrical and Additional Measurements Level monitoring ■ Overview The 3UG35 01 level monitoring relay is used together with the 2- or 3-pole sensors to monitor the levels of conductive liquids. ■ Function The principle of operation is based on measuring the electrical resistance of the liquid between two immersion sensors and a reference terminal. If the measured value is lower than the sensitivity set at the front, the output relay changes its switching state. In order to exclude electrolytic phenomena in the liquid, the sensors are supplied with alternating current. Two-level control: the output relay changes its switching state as soon as the liquid level reaches the maximum sensor, while the minimum sensor is submerged. The relay returns to its original switching state as soon as the minimum sensor no longer has contact with the liquid. Note: It is also possible to connect other resistance sensors to the Min and Max terminals in the range 5 ... 100 kW, e.g. photoresistors, temperature sensors, encoders based on resistance etc. The monitoring relay can therefore also be used for other applications apart from monitoring the levels of liquids. A1/A2 NSB0_00961 T3 For safe resetting, the supply voltage must be interrupted for at least 0.5 s (T3). 3 1 2 The delay times T1 and T2 of the output relay have not been included in the diagram in order to enhance clarity. 4 5 3 4 5 1) Maximum level 1) Minimum level 1) Monitored level Output relay Function OVER Output relay Function UNDER 7 1 2 Determined by the arrangement of the probes in the monitored liquid. Siemens LV 1 T · 2007 7/83 © Siemens AG 2007 Monitoring Relays 3UG Monitoring Relays for Electrical and Additional Measurements Level monitoring ■ Technical specifications Type 3UG30/3UG35 Load capacity of the output relay Rated operational current Ie AC-15/24 ... 400 V DC-13/24 V DC-13/125 V DC-13/250 V Minimum contact load A A A A A Max. 8 3 1 0.2 0.1 mA 5 /17 V for a fault of 1 ppm A 4 Output relay with DIAZED fuse1) gL/gG operational class Electrical endurance Operating cycles Mechanical endurance Operating cycles Ambient temperature During operation During storage °C °C -20 ... + 50 -30 ... + 70 Conductor connection Solid Finely stranded, with end sleeves mm² mm² 2 x (0.5 ...2.5) 2 x (0.5 ...1.5) Degree of protection Terminals Enclosures Vibration resistance According to IEC 60068-2-6 1) 1 x 105 2 x 106 IP20 IP40 Hz/mm 10 ...150/0.035 Short-circuits without any relay contact welding according to DIN VDE 0660 Part 200. V Rated control supply voltage Us 0.85 ...1.1 x Us Voltage tolerance W/VA Maximum power consumption 3/6 UNDER/OVER selector switch at the front Function Inlet or outlet monitoring Sensitivity Adjustable kW 5 ... 100 Setting accuracy At maximum sensitivity % –30 Repeat accuracy At constant parameters % – 0.1 Sensor length Max. m 100 Electrode voltage Max. V 24 (50/60 Hz) Electrode current Max. mA 1 (50/60 Hz) Conductor capacity Of the sensor cable1) nF 10 Delay time • T1 at Max/M terminal • T2 at MIN/M terminal ms ms Typically 500 (ON-delay with OVER, OFF-delay with UNDER) Typically 300 (OFF-delay with OVER, ON-delay with UNDER) Mains buffering time ms 300 1) 7 See Catalog LV 1, Selection data (electrical isolation by means of a transformer) The sensor cable does not necessarily have to be shielded, but it is not recommended to lay this cable parallel to the power supply lines. It is also possible to use a shielded cable, whereby the shield has to be connected to the M terminal. Level monitoring sensors Type 3UG32 07-3A 3UG32 07-2A 3UG32 07-2B 3UG32 07-1B 3UG32 07-1C three-pole two-pole two-pole single-pole single-pole 500 500 -- -- Insulation (PTFE) mm Yes Yes Yes -- Yes Installation Vertical Vertical Lateral Lateral Lateral Length -- 22 Screw-in gland width A/F Thread Inch R 3/8 Connection cable mm2 3 x 0.5, 2 m long Operating temperature °C 90 Operating pressure bar 10 Assignment • Cable/Electrode 7/84 Siemens LV 1 T · 2007 Cable brown Center electrode Not assignable Gland Gland Gland Cable white Not assignable Not assignable Not assignable Electrode Electrode Cable green Not assignable -- Not assignable -- -- © Siemens AG 2007 Monitoring Relays 3UG Monitoring Relays for Electrical and Additional Measurements Level monitoring ■ Dimensional drawings 22,5 77 100 NSB00983 57 79 90 100 3UG35 01 Level monitoring sensors 3UG32 07-3A three-pole wire electrode 3UG32 07-1B single-pole bow electrode 0,5 NSB00991a SW 22 SW 22 15 15 6±1 NSB00994 15 15 7±1 5 500 3UG32 07-1C single-pole electrode, rugged version 3UG32 07-2A two-pole wire electrode 15 50 PTFEinsulation SW 22 40 15 NSB00992 15 SW 22 5 500 15 NSB00995 3UG32 07-2B two-pole bow electrode 7 SW 22 0,5 5 NSB00993a 15 15 7±1 6±1 ■ Schematics 3UG35 01 AC A1 M Min Max 11 R >< A2 12 14 NSB00970 Siemens LV 1 T · 2007 7/85 © Siemens AG 2007 Monitoring Relays 3UG Monitoring Relays for Electrical and Additional Measurements Speed monitoring ■ Overview The 3UG30 51 monitoring relay is used together with a sensor to monitor operating mechanisms for underspeeding. ■ Function The underspeed monitoring relay operates according to the principle of retriggerable OFF-delay. During the time (value) set on the front side, another pulse must arrive at input IN1 or IN2 to ensure that the output relay remains picked up. The monitoring relay evaluates the rising edge of the signal, i.e. a continuous signal is also recognized as a missing pulse. If the retrigger pulse does not arrive, indicating a reduction in speed, the output relay drops. In order to be able to start an operating mechanism, the output relay remains picked up during the ON-delay time T, even if the speed is still below the set value (motor starting override time). The first pulse must come within this time. Speed monitoring with memory (MEMORY) When the output relay drops, this state remains stored even when the speed reaches a permissible value again. The stored state can be ended by a control signal at the reset terminal or by interrupting the supply voltage for at least 200 ms. A1/A2 5 2 1 4 Speed monitoring without memory (NO MEMORY) 1 2 When the speed of the operating mechanism drops below the set value, the output relay drops. It picks up again when the speed is greater than the set value plus the fixed hysteresis. 3 4 5 6 7 The monitoring relay can be used for all functions where a continuous pulse signal needs to be monitored (belt travel monitoring, completeness monitoring, passing monitoring, clock-time monitoring). A1/A2 NSB0_00965 3 2 1 T 4 1 2 3 4 7/86 Set value Hysteresis Actual value Output relay Siemens LV 1 T · 2007 NSB0_00966 3 T T 6 Set value Hysteresis Actual value Output relay Reset Storage (MEMORY) 6