MTS-1720 TWO CHANNEL CURRENT SOURCE - Section 9
9-20 MTS-1700 SERIES OPERATION AND REFERENCE MANUAL
MANTA TEST SYSTEMS
CU A002 15A
FIGURE 9.13 TEST CONNECTIONS FOR CURRENT DIFFERENTIAL RELAYS
IN I3-WYE MODE
9.4.7 Use of Impedance Display
The impedance display feature shows the present voltage divided by the current. In the I3-WYE current
mode, the present current and voltage are selected by the fault mode.
For impedance relays, the DISP RATIOS IMPEDANCE V/I selection in the menu will display the reach of
Φ
-G,
Φ
-
Φ
, and 3
Φ
elements directly. To avoid selection of the incorrect formula, select DISP RATIOS
IMPEDANCE AUTO in the menu.
DIFFERENTIAL
RELAY
OP
R1
R2
I1-I2
I1
I2
I1
I2
I1-I2
OP
R1
R2
Select I3-WYE current mode
IA and IB must be set out
of phase via the menu.
Select 0-N A-N and
B-N for changing
A-N (I1) and
B-N(I2) currents