
PM 1000268 000 00
Device handbook SIRAX MM1200
8/48
All voltage measurement inputs must originate at circuit breakers or fuses rated by 1 Amps. This
does not apply to the neutral connector. You have to provide a method for manually removing
power from the device, such as a clearly labeled circuit breaker or a fused disconnect switch.
When using
voltage transformers
you have to ensure that their secondary connections never will be
short-circuited.
No fuse may be connected upstream of the
current measurement inputs!
When using
current transformers
their secondary connectors must be short-circuited during
installation and before removing the device. Never open the secondary circuit under load.
The connection of the inputs depends on the confi gured system (connection type).
Three Phase - three wire system, unbalanced load
2
L1
L N
AUX
SUPPLY
P1
P1
S1
S1
L2
L3
N
1 3
7 9 13 14
5 8
/
2
$
'
Three Phase - four wire system, unbalanced load
2
L1
L N
AUX
SUPPLY
P1
P1
S1
S1
L2
L3
N
1 3
7 9
13 14
5 8
/
2
$
'
11
P1 S1
4 6
5.3 Inputs
Direct connection
Direct connection