1-1618112-9

Protective Relays WOF & WUF Series Product Specifications Product Facts n Function 81 O/U n ANSI/IEEE C37.90-1978 n UL File No. E58048 n CSA File No. LR61158 Nominal Voltage (±20%) — 120, 230, 380 and 460 volts Nominal Frequencies — 50, 60 and 400 Hz. Trip Point — Screwdriver adjustable. Adjustment range in accordance with ordering information. Operating Temperature — -20°C to +65°C Differential — The frequency pitch-up to drop-out differential is .5% max Voltage Drift — ± .05% maximum frequency error for input voltage variation of ±10% Time Delay — See Time versus Frequency curves Surge Withstand Capability — In compliance with C37.90B ANSI/IEEE Output Contacts — One set N.O., one set N.C. Contact Ratings — 5 amp resistive at 120 VAC or 28VDC R R 2 1/ 2 5 /8 3 1 /8 4 2 1/ 4 3 / 1 4 4 / 1 2 11/ 64" DIA. 4 HOLES Note: Dimensions in inches. Multiply values by 25.4 for dimensions in mm. Typical Curves (WOF Series) 90 Typical Curves (WUF Series) 60 Overfrequency Relay Model WOF-12-6070 85 58 Hz. Setting 55 80 Frequency (Hz) Frequency (Hz) Application The output contacts of frequency relays are energized when the frequency exceeds the adjustable set point. Overfrequency and underfrequency relays are available in 50, 60 and 400Hz. Combination over/underfrequency “band pass” relays are also available. These are energized at rated frequency and deenergized during overfrequency or underfrequency conditions. Frequency Differential relays are energized above the preset frequency. The pick-up and drop-out frequency settings are independently adjustable. 75 70 Hz. Setting 70 65 Hz. Setting 55 Hz. Setting 50 50 Hz. Setting 45 40 Underfrequency Relay Model WUF-12-5060 35 65 62 Hz. Setting 30 0 1 60 0 1 2 3 4 5 6 2 3 4 5 6 Drop-Out Time Delay (sec) Pick-Up Time Delay (sec) Ordering Information Sample Part Number 䊳 Time Delay WUF -12 -5060 -T Type: WUF = Underfrequency WOF = Overfrequency Input Voltage (VAC) 12 = 120 23 = 230 38 = 380 46 = 460 Frequency Range 4050 = 40-50 HZ 5060 = 50-60 HZ 6070 = 60-70 HZ 3540 = 350-400 HZ 4045 = 400-450 HZ (overfrequency only) Consult factory for additional models. Time Delay Options blank = Per Time Curve T = Adjustable Standard Time Delay — A minimum, fixed inverse time delay is incorporated in all frequency relays to prevent nuisance tripping and is represented by the typical curves shown above. Adjustable Time Delay — If additional time delay is required, a suffix “T” must be added to the part number. This allows the minimum fixed time delay to be field-adjustable up to 20 seconds. Notes: 1. Remove black screws for access to the frequency and the time adjustments. 2. Clockwise rotation of the frequency potentiometer will raise the frequency trip point. 3. Clockwise rotation of the time adjustment, option “T” will increase the time for overfrequency relays and dropout time for underfrequency relays. 11–28 Catalog 5-1773450-5 Revised 3-13 www.te.com Dimensions are shown for reference purposes only. Specifications subject to change. Dimensions are in millimeters unless otherwise specified. USA: +1 800 522 6752 Asia Pacific: +86 0 400 820 6015 UK: +44 800 267 666 For additional support numbers please visit www.te.com