ABB M4M 20, User Manual

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M4M 20
NETWORK ANALYZER USER MANUAL
7.6.VT ratio
M4M is capable to measure voltage via direct connection up to 400 VL-N (690V L-L), or via indirect
connection by means of voltage transformers.
In order to configure the voltage transformer ratio it is needed to enter manually the values of both
primary and secondary. The default values are 400 for the primary and 400 for the secondary.
→ →
Installation
→
VT ratio
1. Enter the value of the primary with
2. Press
ENTER
to confirm.
Max primary VT: 500.000
Max secondary VT: 999
3.
Enter the value of the primary with
4. Press
ENTER
to confirm.
Enter the password if necessary.
In case of direct insertion, up to 500V phase-neutral, without voltage transformers set 100/100 (default) as
value.
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