Voltage Sensitive Relays WILMAR™ Protective Relays – WUV/WOV Series Function: 27/59 • ANSI/IEEE C37.90-1978 • UL file No. E58048 • CSA file No. LR61158 TERMINAL STRIPS #6 - 32 SCREWS Voltage sensitive relays are available for both AC and DC applications for over/undervoltage protection. Combination over/undervoltage relays provide bandpass capabilities. AC relays are either single or three-phase type. Three phase models are designed to sense the average of the three phases or the highest single phase. Voltage trip points are screwdriver adjustable, and operation is time-delayed so that momentary voltage transients will not cause nuisance tripping. 3.0 3.0 1 /2 3 7 /8 3 2 3/4 1 /2 3 Typical Time Curve 40.0 30.0 Overvoltage Relays WOV Series 20.0 11 /64" DIA. 4 MTG. HOLES 10.0 0.0 -10.0 Note: Dimensions in inches. Multiply values by 25.4 for dimensions in mm. 0 0.05 0.1 0.15 0.2 0.25 0.3 PART NUMBER SELECTION Pick-Up Time Delay PART NUMBER SELECTION Single Phase Three Phase PRODUCT SPECIFICATIONS Part Number WUV/WOV Nominal Voltage ............................... 120 VAC to 575 VAC Phase ................................................ Single or Three Line Frequency ................................. 50-400 Hz Pick-up to Drop-out Differential ...... 2.5% maximum Drop-out Point (u/v models) ........... 70-100% of nominal voltage, screwdriver adjustable Pick-Up Point (o/v models) ............. 100-125% of nominal voltage, screwdriver adjustable Output Contacts ............................... One set N.O., One set N.C. Contact Ratings ................................ 5 amp resistive at 120 VAC or 28 VDC Operating Temperature Range ........ -20°C to +65°C Power Consumption ........................ 2 VA maximum Time Delay ........................................ 150-300 ms (UV Model) Minimum Life ................................... 500,000 operations Notes: 1. Remove black screw for access to the voltage trip adjustment. 2. Clockwise rotation of the adjustment potentiometer will raise the voltage trip point. 20 Sample Part No. WUV-1-120 Type: WUV - Undervoltage WOV - Overvoltage No. Phases 1 = Single 3 = Three Line Voltage VAC 120 416 208 440 220 460 230 480 240 525 380 575 Options P - Transient Protection A - Two Normally Open Contacts B - Two Normally Closed Contacts H - 125VDC, 3A Contacts Transient Protection - All voltage relays will withstand momentary voltage surges of twice the nominal rated input voltage (standard). Option "P" provides additional transient protection which complies with the requirements of ANSI/IEEE C37.90-1978 Consult factory for additional models. 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)