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OPERATION SUMMARY - Section 3
MTS-1700 SERIES OPERATION AND REFERENCE MANUAL 3-31
CU A002 15A
MANTA TEST SYSTEMS
FIGURE 3.14 CURRENT DIFFERENTIAL RELAY TEST -
INDEPENDENT COIL TYPE
3.3.11.1 MINIMUM PICKUP TEST.
1.
Connect the relay as shown in Figure 3.14. Select I1-LOW current mode and static operation mode.
2.
Press [CURRENT] to display/adjust I1 current. Press and hold [FAULT].
3.
Slowly increase the current (I1) until the relay operates. Record this reading as the minimum pickup
current. Release the [FAULT] button.
3.3.11.2 SLOPE TEST.
1. Connect relay as shown in Figure 3.14. Select I1&I2 current mode and static operation mode. Turn
[PREFAULT] off.
2. Press [CURRENT] to display/adjust the I1 current. “I1-AMPS” should be indicated in the [MODE/
MENU DISPLAY]. Press and hold [FAULT], and increase the current to the desired nominal value.
DIFFERENTIAL
RELAY
Press [CURRENT] to toggle between I1 and I2
adjustment/display.
Press [PHASE] to display
and adjust phase between
I1 and I2.
Select I1&I2
current mode
I1
I2
Phase angle between
I1 & I2 is normally
set to 0°