BPD1002

Accessories Data Sheet Backplanes BPD, BPF for T Series Features • 19" / 3U Rack-Systems • Easy configuration of telecom rectifiers, battery chargers and power bus systems • Provides controller function • 1.6 kW maximum power • Single or triple phase connection • Redundant configuration possible Description matter of interlinking the DC output rails and signal outputs of two or more racks. The back plane types BPF1000 and BPD1000 have been designed for fast and simple set-up of 19" rack mounted power supply systems powered by AC-DC converters of the T series. Battery charger systems, telecom rectifiers and modular power bus systems can easily be configured with n+1 redundancy if required. Three T Series converters can be plugged into one back plane providing up to 1.6 kW output power. Since for such applications the status of the power bus is of importance rather than the output status of a single AC-DC converter, T units with option D should be chosen enabling remote bus voltage sensing. The back plane concept allows system assembly in next to no time. When fitted in the rack all input and output terminals are readily accessible from the rear. The AC input is designed for single or 3-phase operation. The monitoring signals and the control signal inputs and outputs are available from a screw terminal strip. System specific signal combination is possible with different jumper settings. The back plane fulfills in this way the function of a controller unit. The layout of the back plane and the hot plug-in capability of the AC-DC converters allow system expansion under load (e.g. from 550 W up to 1.6 kW) by simply inserting further T units into the rack. Larger system power extension is just a Table of Contents The back planes are available in 2 basic versions: BPD1000: A front-end version, fitted with decoupling diodes in each positive line to the DC bus, for systems with 2 or more T units in parallel or n+1 redundancy. BPF1000: A battery charger version, in which each output is fitted with a fuse in the positive line to the DC bus, for battery charging or rectifier systems with two or more T units in parallel or n+1 redundancy. For minimum electromagnetic emission at the input, both the BPD and the BPF versions are fitted with input filters. Should project specific requirements demand enhanced hold-up time or lower output ripple (low frequency ripple) than specified for the individual AC-DC converters, both basic back plane versions are available with additional output capacitors. Important: The neccessity to provide a cover over the live parts at the mains input (High Voltage) or over the DC bus bars (Energy Danger), preventing accidental contact during installation, start-up of a system or maintenance, depends on the final installation as well as on the applicable safety requirements. However, it is the responsibility of the installer or user to provide such a safety cover to assure the compliance with the relevant and applicable safety standards. Page Page Description ...................................................................... 1 Electromagnetic Compatibility (EMC) ............................. 7 Functional Description .................................................... 2 System Integration .......................................................... 8 Model Selection ............................................................... 2 Mechanical Data ............................................................ 10 Mains Input Section ......................................................... 4 Safety and Installation Instructions ............................... 11 Output Section ................................................................. 5 Copyright © 2015, Bel Power Solutions Inc. All rights reserved. MELCHER BCD.00617 Rev AB,16-Nov-2015 The Power Partners. Page 1 of 15 Accessories Data Sheet Backplanes BPD, BPF for T Series Model Selection Table 1: Type survey AC Input 85...255 VAC 1 or 3 phase (Y) Input filters 1 Output capacitors (reduced 100 Hz output ripple) 2 Preload Application BPD1002 BPD1003 x x – 90 mF – – BPF1004x BPF1007x BPF1006x – 50 mF 90 mF x x x Battery charger, fitted with fuses 19” Rack, 3 U Front-end, fitted with diodes Rack for systems with up to 3 T units 1 See also: Electromagnetic Compatibility. 2 Please refer to: Dimensioning Example of a Battery Charger System in Single Phase Connection 3 Only for LT units and 120/208 VAC. See fig.: Mains input arrangement. Functional Description The back plane is divided into 3 sections, each one fitted with an H15 female connector for one T unit, with the mains input section and the DC output section separated from each other. The layout of the standard back planes gives the user the flexibility to operate the system either in single phase or in 3-phase (Y) configuration. Connection to the mains is achieved via the 6-pole connector (X1). With the wire jumpers B10/20/30 in Y-position (standard configuration) each T unit is connected between its defined input line and the neutral. (Changing of the configuration by the customer is not recommended.) An input filter, provided in the supply line to each T unit minimizes the conducted noise at the input of the system. The positive output of each T unit is separately fed to the common power bus and is decoupled depending upon the back plane type, either by a fuse (F11/21/31) or by a decoupling diode (D11/21/31). The fuses (cartridge type) are externally accessible from the frontside. The BPF versions are fitted with a common preload (R25). Additional output capacitors (up to 3 per output,10 mF each) further reduce the low frequency output ripple and provide enhanced hold-up time. All relevant monitoring signals as well as control signal inputs and outputs are accessible at the signal terminal strip (X5). The jumper strip (X3) allows system specific signals according to different jumper settings. An auxilliary circuit (protected by a fuse F1, rated T1A, 250 V, 5 × 20 mm) allows a relay to be directly driven for system specific control functions. Each T unit provides an individually adjustable power down signal enabling bus status monitoring at different voltage levels. The threshold values can be set at the soldering tabs D set (R13/14, R23/24 and R33/34). Note: If a power system is operated with 3 T units per backplane, connection to the mains in a 3-phase configuration (Y or D) will provide equal load distribution on the input lines. Furthermore the low frequency ripple at the output of the T units is compensated to zero as long as all 3 T units are in operation. MELCHER BCD.00617 Rev AB,16-Nov-2015 The Power Partners. Page 2 of 15 Accessories Data Sheet Backplanes BPD, BPF for T Series Signal terminal strip X5 Connector H15 for T unit Mains input connector X1 X4 3 2 Input filter Input filter Y Input filter Y B20 B30 Y + D31 D21 D11 F31 F21 F11 – R33 R23 R34 R24 R25 Dset T1 Output capacitor (10 mF, each) B10 R14 R13 Jumper strip X3 Bus bar system L1 L2 L3 N 1 03012 Fuse F1(auxiliary circuit) Preload (300 >300 >300 MΩ Insulation resistance at 500 VDC MELCHER BCD.00617 Rev AB,16-Nov-2015 The Power Partners. Page 13 of 15 Accessories Data Sheet Backplanes BPD, BPF for T Series Leakage Currents in AC-DC operation 10077 Leakage currents flow due to internal leakage capacitance and RFI suppression Y-capacitors. The current values are proportional to the mains voltage and nearly proportional to the mains frequency. They are specified at the maximum operating input voltage, where phase, neutral and protective earth are correctly connected as required for class I equipment. Under test conditions, the leakage current flows through a measuring instrument (MI) as described in fig.: Measuring instrument for earth leakage current tests, which takes into account impedance and sensitivity of a person touching unearthed accessible parts. The current value is calculated by dividing the measured voltage by 500 Ω. If inputs and/or outputs of back planes are connected in parallel, their individual leakage currents are added. 10078 L1 L1 L2 L2 L3 N L3 N Back Plane L N Vo– S1 Back Plane S4 MI for earth leakage current S2 S3 MI for output leakage current Fig. 14 Test set-up for leakage current tests on class I equipment in single phase configuration. S1 is used to simulate the interchanging of phase and neutral, S2/3 select either the earth or output leakage current measurements, S4 selects the leakage current measurement of either the positive or negative output. Vo+ Vo– MI for earth leakage current 10061 S4 S2 S3 Vo+ L N 1500 Ω MI 500 Ω MI for output leakage current 10 kΩ 220 nF 22 nF Fig. 15 Test set-up for leakage current tests on class I equipment in phase to phase or 3-phase configuration of back planes fitted with LT units. S2/3 select either the earth or output leakage current measurements, S4 selects the leakage current measurements of either the positive or negative output. V Fig. 16 Measuring instrument (MI) for earth leakage current tests according to IEC/EN 60950, Annex D. Table 7: Leakage currents in single phase configuration (= worst case) Characteristic Earth Back plane without T unit Unit – 4.4 6.2 7.9 mA 2.6 3.7 4.7 0.25 0.25 0.25 0.25 Specified value at 255 V, 50 Hz –