5 3 /8 1 4 /2 1 4 /8 Voltage Sensitive Relays WILMAR Protective Relays WOUVT Series, Over/Undervoltage 27/59 Function: ANSI/IEEE C37.90-1978 Voltage sensitive relays are available for both AC and DC applications for overvoltage and undervoltage TERMINAL STRIP protection. Combination over/undervoltage relays 6 - 32 SCREWS provide band-pass capabilities. AC relays are either single or three-phase type. Three phase relays are designed to sense the average of the three phases. Voltage trip points are screwdriver adjustable, and operation is time-delayed so that momentary volt- age transients will not cause nuisance tripping. Operation: The relay will energize at normal voltage condition. The normally closed contact (Form B) will open and the normally open (Form A) will close. The relay will de-energize after time delay when over or undervoltage condition is reached. 11 /64 DIA. 4 MTG. HOLES Note: Dimensions in inches. Multiply values by 25.4 for dimensions in mm. PART NUMBER SELECTION Sample Part No. WOUVT -1-120AC Type: WOUVT - Over/Undervoltage No. Phases 1 = Single 3 = Three (line to line) Line Voltage VAC PRODUCT SPECIFICATIONS 115 400 Part Number WOUVT 120 416 200 440 Nominal Voltage ............................... 120 VAC to 575 VAC 208 460 Phase ................................................ Single or Three 220 480 230 525 Line Frequency ................................. 50-400 Hz 240 575 Type of Sensing ............................... Average of all three phases 380 Options: Undervoltage Trip ............................ 70-100% of nominal voltage, screwdriver adjustable Blank - Standard Overvoltage Trip ............................... 100-125% of nominal voltage, screwdriver adjustable A = 2 Form A Contacts B = 2 Form B Contacts Drop-out Time Delay........................ 0.5 to 20 seconds, screwdriver adjustable H = 125 VDC Contacts Pick-up to Drop-out Differential...... 2% maximum P = Transient Protection Output Contacts ............................... One set N.O., One set N.C. Option provides for contacts rating of 3 amps Contact Ratings ................................ 5 amp resistive at 120 VAC or 28 VDC 125VDC. Operating Temperature Range ........ -40C to +70C Option provides additional transient protection which complies with the requirements of ANSI/IEEE C37.90- Power Consumption ........................ 4 VA maximum 1978 Notes: 1. Remove black screw for access to the voltage trip and time delay adjustment potentiometer. Consult factory for additional models. 2. Clockwise rotation of the voltage adjustment potentiometer will raise the voltage trip point. 3. Clockwise rotation of the time adjustment potentiometer will increase the drop-out time delay. 24 Tyco Electronics / www.tycoelectronics.com / Factory Direct Technical Support: 800-253-4560, ext. 2023 (U.S., Canada, Mexico) or 805-220-2020, ext. 2023 (International) 3.0 1 4 /4 1 3 /2