Bender NGRM700 User Manual

Initial commissioning
57
NGRM7xx_D00292_07_M_XXEN/02.2022
8. Initial commissioning
The following parameters must be entered for initial commissioning:
 System voltage U
sys
(phase-to-phase)
The corresponding coupling device must be used depending on the system voltage:
for U
sys
≤ 4.3 kV: CD1000, CD1000-2, CD5000 (20 k)
for U
sys
> 4.3 kV: CD14400, CD25000 (100 k)
 Ratio of the used potential transformers (U
NGR nom
) if used
 NGR rated current (I
NGR nom
)
 Ratio of the used measuring current transformer
(600:1 for W… measuring current transformers)
 NGR rated resistance R
NGR nom
8.1 Response values
The following parameters can be adjusted:
 Trip threshold for voltage (U
NGR
)
 Trip threshold for current (I
NGR
)
 Trip threshold for resistance (R
NGR
)
Voltage trip threshold (U
NGR
)
The threshold is set as a percentage of U
NGR nom
.
Setting range of trip threshold U
NGR
: 10…90 % (factory setting 60 %)
Current trip threshold (I
NGR
)
The trip threshold is set as a percentage of I
NGR nom
.
Setting range of trip threshold I
NGR
: 10…90 % (factory setting 60 %).
Parameters are set in the
Main menu > 6. HRG, LRG settings.
Alternatively, you can follow the setup wizard
(Main menu > 8. Commissioning).
Low trip threshold values may lead to false tripping, while
with high trip threshold values the device may not trip at all.

Bender NGRM700 Specifications

General

Brand	Bender
Model	NGRM700
Category	Measuring Instruments
Language	English