DETAILED OPERATION - Section 4
4-32
MTS-1700 SERIES OPERATION AND REFERENCE MANUAL
MANTA TEST SYSTEMS
CU A002 15A
4.6.10.7
SETTING AND DISPLAYING CURRENT IN THE I3-PARALLEL CURRENT MODE.
When I3-PARALLEL current mode is selected, the IA, IB and IC channels of the I3 current output are set to
the same absolute phase angle and equal amplitudes.
To set the fault value:
1.
Select STATIC operation mode.
2.
Press and hold [FAULT], or apply a short circuit on the external start trigger contact inputs.
3.
Turn the [MODIFY] knob to adjust the total current output.
4.
Release the [FAULT] button, and remove any short circuit on the external start trigger contact
inputs.
To set the postfault value:
1.
Select STATIC operation mode.
2.
Turn [POSTFAULT] on.
3.
Turn the [MODIFY] knob to adjust the total current output.
To set the angle between the current and the voltage:
If paralleling more than one system together, see also Section 4.10.4.
4.6.10.8
FAULT CURRENT PRESET IN THE I3-PARALLEL CURRENT MODE.
Each channel will be set to one-third of the preset value. For example, if only two channels are paralleled
together, only two-thirds of the preset value will be obtained.
4.6.10.9
IMPEDANCE AND POWER DISPLAY IN I3-PARALLEL CURRENT MODE.
Impedance and power displays (see Sections 5.10.3.1, 5.10.4) will use the summed current measurement
(IA+IB+IC) to compute and measure impedance and power.
4.6.10.10 PHASOR TABLE COMMAND AND MTS-2100 OPERATION IN I3-PARALLEL CUR-
RENT MODE.
In I3-PARALLEL current mode, the PHT command returns the summed current measurement (IA+IB+IC)
in prefault and fault states, and the summed current setting in postfault state as the value for I3.
The IA+IB+IC summed current is treated as a single high current. This is displayed accordingly as a single
current in the MTS-2100 program.
