janitza UMG 512-Pro, User Manual And Technical Data

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59
UMG 512-PRO
Lock transformer ratios
The current and voltage transformer ratios can be
locked/unlocked via the display. The status can
be read out via an internal device address:
·If the entry "Lock all transformers" contains the
value "no", the registers are not locked (neither
current transformer (CT) nor voltage transformer
(VT) ratios).
·If the entry "Lock all transformers" contains the
value "yes", the registers are locked
(CT and VT ratios).
Modbus
addr.
Value/function
19716 Lock transformer ratios
0 = not locked
1 = locked
Fig. Lock transformer ratios
INFORMATION
· A Modbus address list for your device can
be found in the download area at
www.janitza.com.
Residual current transformer
When using the residual current inputs I5 and I6,
the corresponding ratios of the residual current
transformers used must be set.
Setting range:
Primary
1 .. 1000000
Secondary 1
Factory default setting:
Primary
127
Secondary 1
The failure monitoring of the corresponding resid-
ual current inputs is also set in this menu:
· Activated - Switches on the failure monitoring
for the residual current measurement.
· Deactivated - Switches off the failure monitoring
for the residual current measurement.
Fig. Residual current transformer menu
Fig. Failure monitoring