Paralleling Relays
WILMAR™ Protective Relays – WSYN Series
TERMINAL STRIPS
#6 - 32 SCREWS
Function:
25
•
ANSI/IEEE C37.90-1978
•
UL file No. E58048
•
CSA file No. LR61158
Operation:
A. The output relay will energize when all three
of the following conditions are met:
1. Voltage differential is below the preset
value.
2. Phase angle is below the preset value.
3. Frequency differential is below the preset
value.
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
4
3
/
16
3
1
/
2
7
/
16
4
1
/
4
5
2
23
/
3
5
When both sensing voltage are below 15-25%
of nominal, the output relay will not energize.
/ DIA.
4 MTG. HOLES
13 64
"
Note:
Dimensions in inches. Multiply values by 25.4 for dimensions in mm.
PART NUMBER SELECTION
Sample Part No.
Type:
WSYN - Synchro Check
Frequency Hz
50
60
400
WSYN-50-120-12DC-A
PRODUCT SPECIFICATIONS
Part Number
Sensing Voltage ...................................
WSYN Series
Single Phase, see Part Number Selection
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).
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
Operating Temperature ........................
0.2 Hz to 0.5 Hz
-20
o
C to +50
o
C
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
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)
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