Voltage Sensitive Relays
WILMAR™ Protective Relays – D100X Series, Close Differential
Function:
•
ANSI/IEEE C37.90-1978
•
UL file No. E58048
•
CSA file No. LR61158
Close Differential Relays are voltage sensitive. The
pick-up and drop-out voltage settings are indepen-
dently adjustable, which allows precise setting of the
differential voltage. This relay is available in a wide
range of AC and DC voltages. Their primary applica-
tion is the sensing and control of transfer switches.
0.5
Operation:
See Part Number
Selection
Monitors a single phase AC signal, and is used for
undervoltage detection. Has separate pick-up and
drop-out voltage settings, providing an adjustable
hysteresis.
Note:
Dimensions in inches. Multiply values by 25.4 for dimensions in mm.
2.6
6
3.0
5
3.
2.2
50
3
/ DIA.
4 MTG. HOLES
11 64
"
PRODUCT SPECIFICATIONS
PART NUMBER SELECTION
Sample Part No.
D100X
Height
2"
2"
3.125"
3.125"
3.125"
3.125"
3.125"
Part Number
Nominal Voltage ...............................
Nominal Frequency ..........................
Pick-Up Adjustment Range .............
Drop-Out Adjustment Range ...........
Maximum Differential Setting ..........
Minimum Differential Setting ..........
Output Contacts ...............................
Contact Ratings ................................
Operating Temperature Range ........
Expected Life ....................................
D100X
AC, Single Phase, see part number selection
50 to 400 Hz.
67-100% of nominal voltage
67-100% of nominal voltage
33% of nominal voltage
2% of nominal voltage
Form C (SPDT)
5 Amp resistive at 120 VAC or 28 VDC
-20°C to +85°C
10 million operations
Model: L-L Volts
D100X = 120 VAC
D100-6X = 120 VAC, Spike Suppression
D100-3X = 208 VAC
D100-4X = 240 VAC
D100-8X = 277 VAC
D100-5X = 480 VAC
D100-7X = 510 VAC
Surge Withstand Capability is in compliance with the
requirements of ANSI/IEEE C37.90B
Notes:
1. Remove black nylon protective screws to gain
access to the two internal adjustment
potentiometers.
2. Clockwise rotation of the pick-up and drop-out
adjustment will raise the voltage trip point.
3. The relay contacts are shown in the de-energized
state.
Consult factory for additional models.
Inverse Time Drop-Out:
The differential relay contains a time delay before operation so that
momentary voltage transients do not aftect the operation of the relay. The time delay has an
inverse time characteristic so that excessive voltage conditions will cause a more rapid drop-
out. This time delay is approximately 200mSec. (12 cycles) at the trip settings and
decreases to 30 mSec. at approximately 15% beyond the trip settings.
26
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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