OPERATION SUMMARY - Section 3
3-24 MTS-1700 SERIES OPERATION AND REFERENCE MANUAL
MANTA TEST SYSTEMS
CU A002 15A
3.3.9.7 PERMISSIVE TRIP TEST.
The following procedure checks the basic operation of permissive trip (PUR or POR) functions of an
impedance relay. The [AUX CONTACT 1] is used to apply a DC signal to the permissive trip input to the
relay:
1. *If you haven’t done so, perform steps 1-3 in the Preparation section (3.3.9.1), except using the
connections shown in Figure 3.10.
2. If you haven’t done so, perform steps 2-5 of the reach test above to find the zone 2 reach at the
theoretical MTA. To set the impedance to the desired percent of reach for testing, decrease the voltage,
or increase the current.
3. Release the [FAULT] button or [EXTERNAL START] contact input. Press [STATIC/DYNAMIC] to
select dynamic operation mode.
FIGURE 3.10 3-
Φ
IMPEDANCE RELAY PERMISSIVE TRIP TEST SETUP
Select DYNAMIC mode to run timing test
Press [FAULT] to apply fault values
Use I3 current mode
Select element to be
tested using FAULT MODE
controls.
Turn [PREFAULT] on to maintain prefault values
