Specifications

7SR242 Duobias Settings, Configuration & Instruments Guide
DIFFERENTIAL METERS
to view
This is the sub-group that includes all the meters that are
associated with Current TEST/RESET  allows access to
this sub-group
W1 Line
Ia 0.00xIn ----
o
Ib 0.00xIn ----
o
Ic 0.00xIn ----
o
Displays Winding 1 Input 3 Phase currents Nominal RMS
values & phase angles with respect to PPS voltage.
W2 Line
Ia 0.00xIn ----
o
Ib 0.00xIn ----
o
Ic 0.00xIn ----
o
Displays Winding 2 Input 3 Phase currents Nominal RMS
values & phase angles with respect to PPS voltage.
W1 Relay
Ia 0.00xIn ----
o
Ib 0.00xIn ----
o
Ic 0.00xIn ----
o
Displays Winding 1 relay currents Nominal RMS values &
phase angles with respect to PPS voltage.
W2 Relay
Ia 0.00xIn ----
o
Ib 0.00xIn ----
o
Ic 0.00xIn ----
o
Displays Winding 2 relay currents Nominal RMS values &
phase angles with respect to PPS voltage.
Operate
Ia 0.00xIn
Ib 0.00xIn
Ic 0.00xIn
Displays the 3 phase operate currents’ relevant to the biased
differential (87BD) and highset differential (87HS) functions.
Restrain
Ia 0.00xIn
Ib 0.00xIn
Ic 0.00xIn
Displays the 3 phase restrain currents relevant to the biased
differential (87BD) function.
W1 1st Harmonic
Ia 0.00xIn
Ib 0.00xIn
Ic 0.00xIn
Displays W1 3 phase fundamental current components
Nominal RMS values.
W1 2
nd
Harmonic
Ia 0.00xIn
Ib 0.00xIn
Ic 0.00xIn
Displays W1 3 phase 2
nd
Harmonic current components
Nominal RMS values.
W1 5
nd
Harmonic
Ia 0.00xIn
Ib 0.00xIn
Ic 0.00xIn
Displays W1 3 phase 5th Harmonic current components
Nominal RMS values.
W2 1st Harmonic
See above.
W2 2
nd
Harmonic
See above.
W2 5th Harmonic
See above.
©2010 Siemens Protection Devices Limited Chapter 2 Page 9 of 20