Function:
28
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• ANSI/IEEE C37.90-1978
• UL file No. E58048
• CSA file No. LR61158
Several types of Reverse Power Relays are available
including relays sensitive to reverse reactive power
(KVAR). WILMAR is the leading brand of reverse power
relays. Our rugged sealed construction provides con-
tinuous and reliable operation unaffected by shock,
vibration or other severe environments. Reverse Power
Relays are used for the protection of generator sets
operating in parallel.
Reverse Power Relays
PRODUCT SPECIFICATIONS
Sample Part No. 710X
Type: ± 20%
710 = 120 V, 220 V, 266 V line to neutral
720 = 120 V, L-L, 3 Phase
721 = 230 V, L-L, 3 Phase
722 = 380 V, L-L, 3 Phase
723 = 460 V, L-L, 3 Phase
724 = 575 V, L-L, 3 Phase
725 = 416 V, L-L, 3 Phase
Mounting:
X = Flange
Blank - Stud
Options:
7 = Reverse Inductive
P = Surge Suppression
Consult factory for additional models.
PART NUMBER SELECTION
Notes:
1. Remove screw for access to the pick-up adjustment.
2. Clockwise rotation of the adjustment will raise the reverse trip point.
3. This relay senses true power, which is a product of voltage, current and phase angle.
Connections and polarity must be obversed in accordance with the provided diagrams.
PART NUMBER SELECTION
Part Number
Line Voltage......................................
Line Frequency .................................
Current Requirements .....................
Trip Adjustment ...............................
Time Delay........................................
Output Contacts ...............................
Contact Ratings................................
Power Consumption ........................
700 Series
Model 710X = 120 V, 220 V or 266 V
line to neutral sensing
50-500 Hz.
0 to 5 amp max direct or from CT with 5 amp
secondary
Screwdriver adjustable 4% to 20% (of the 5 amp rating)
Inverse Delay - See Chart
One set N.O., one set N.C.
5 amp resistive at 120 AC or 28 Vdc
Voltage circuit: 2 VA max.
Current circuit: 4 VA max.
Model 710 (X)
Designed for 120, 220 or 266 volt
line to neutral connection
Model 720 (X) thru 724 (X)
For operation on three phase,
three wire circuits
0%
10%
20%
30%
40%
50%
60%
70%
80%
0.000 0.100 0.200 0.300 0.400
Time Delay (seconds)
11
/
64
"
DIA.
4 MTG. HOLES
3.0
3
1
/
2
3
7
/
8
3
13
/
16
2
3
/
4
3
1
/
2
TERMINAL STRIPS
#6 - 32 SCREWS
32
WILMAR™ Protective Relays – 700 Series
Note: Dimensions in inches. Multiply values by 25.4 for dimensions in mm.
