DETAILED OPERATION - Section 4
MTS-1700 SERIES OPERATION AND REFERENCE MANUAL 4-35
CU A002 15A
MANTA TEST SYSTEMS
The
Φ
-N amplitudes of the two selected phases are set to the same value, and adjusted simultaneously.
The
displayed voltage is the phase-to-phase voltage across the two faulting phases.
Once the prefault, fault (and postfault, if desired) voltages are set, they can be applied to any two desired
phases (A-B-N, B-C-N, C-A-N) by changing the [FAULT PHASE] selector.
4.7.6
Fault Simulation Examples
The following examples demonstrate use of the fault mode controls and the voltage adjustment together for
simulating various types of faults.
4.7.6.1
SINGLE-PHASE-TO-GROUND FAULT EXAMPLE.
To simulate a single phase fault, set up the following voltages:
Fault mode Fault state Voltage
Φ
-N
A-N Prefault 70V
Φ
-N B-N Prefault 70V
Φ
-N
C-N Prefault 70V
Φ
-N
A-N Fault 30V
Once the fault
Φ
-N voltage of 30V
is set, it can be applied to any desired phase (A-N, B-N, or C-N) by
changing the [FAULT PHASE] selector.
4.7.6.2
SINGLE-PHASE OVERVOLTAGE EXAMPLE.
To simulate a single phase overvoltage fault, set up the following voltages:
Fault mode Fault state Voltage
Φ
-N
A-N Prefault 70V
Φ
-N
B-N Prefault 70V
Φ
-N
C-N Prefault 70V
Φ
-N
A-N Fault 95V
Once the fault
Φ
-N voltage of 95V
is set, it can be applied to any desired phase (A-N, B-N, or C-N) by
changing the [FAULT PHASE] selector.
4.7.6.3
PHASE-TO-PHASE FAULT EXAMPLE.
To simulate a phase-to-phase fault, set up the following voltages:
Fault mode Fault state Voltage
Φ
-N
A-N Prefault 70V
Φ
-N
B-N Prefault 70V
Φ
-N
C-N Prefault 70V
Φ
-
Φ
B-C Prefault 120V
Φ
-
Φ
B-C Fault 40V
