Paralleling Relays WILMAR™ Protective Relays – WSYN Series Function: 25 • ANSI/IEEE C37.90-1978 TERMINAL STRIPS #6 - 32 SCREWS • UL file No. E58048 • CSA file No. LR61158 Operation: A. The output relay will energize when all three of the following conditions are met: 4 3/16 3 1/ 2 1. Voltage differential is below the preset value. 2. Phase angle is below the preset value. 3. Frequency differential is below the preset value. 7 / 16 4 1 /4 5 2 23 / 3 5 B. The relay is also provided with a "Double Dead Bus" feature: When the voltage on either one of the sensing inputs is below 15-25% of nominal, (Dead Bus Condition), the output relay will energize to permit paralleling. 1 2 4 / 2 15 / 3 5 When both sensing voltage are below 15-25% of nominal, the output relay will not energize. 13/ 64" DIA. 4 MTG. HOLES Note: Dimensions in inches. Multiply values by 25.4 for dimensions in mm. PART NUMBER SELECTION PRODUCT SPECIFICATIONS Part Number WSYN Series Sensing Voltage ................................... Single Phase, see Part Number Selection Control Voltage .................................... See Part Number Selection Voltage Differential Adjust Range ....... 4% to 10% of nominal voltage Phase Angle Adjust Range .................. 4 to 10 electrical degrees Frequency Differential Adjust Range 0.2 Hz to 0.5 Hz Operating Temperature ........................ -20o C to +50 oC Contact Ratings .................................... 5 amp resistive at 120 VAC or 28Vdc Output Contacts ................................... One set N.O., one set N.C. Notes: 1. Remove black cover screws to gain access to the adjustment potentiometers. 2. Clockwise rotation increases the trip differential setting. 3. Calibration terminals (11) (12) must be connected together to disable the phase angle detector when setting the frequency difference trip point. Once it is set, the connection must be removed. 38 Sample Part No. Type: WSYN - Synchro Check Frequency Hz 50 60 400 WSYN-50-120-12DC-A Sensing Voltage VAC ( ±10%) 120 400 200 416 208 440 220 460 230 480 240 525 380 575 Control Voltage ( ±20%) 12DC 120AC 24DC 230AC 48DC 380AC 125DC 460AC Options A = two normal open contacts B = two normally closed contacts H = Contacts rated 3 amp at 125 VDC P = Transient Protection Transient Protection - All voltage relays will withstand momentary voltage surges of twice the nominal rated input voltage (standard). 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)