9
It is permissible for connector S1 or S2 of
the current transformer to be grounded.
Caution:
The nominal current in the current
transformer path may not exceed 5 A.
Note:
After connection it is necessary to re-
move the short-circuit jumper on the cur-
rent transformer, if present.
2.4 ”Meas” measuring voltage con-
nection
This connection can be used to switch
the control relay to a different measuring
procedure for monitoring overcurrent
(see section 2.8 ).
This terminal ”Meas” (Figure 2, item ’k’)
is not used in the standard connection.
Important information:
The nominal voltage between the
”Meas” and ”N” connectors may not
exceed 240 VAC. The voltage between
the ”Meas” and ”L” connectors may
not exceed 420 VAC.
If ”Meas” is connected directly to a
phase conductor, then this is to be
secured externally with a maximum
of 4 A.
2.5 Switching contacts
The shared pole of all switching contacts
(Figure 2, item ’m’) is connected to ter-
minal ”L” of the voltage supply.
Important information:
The outputs of the switching contacts
do not have floating potential.
When
the
switching
contacts
are
switched, the same voltage is applied as
is used to supply voltage to the control
relay (connection ”L”).
The contactor relays of the capacitor
stages are operated (supplied) via the
switching contacts of the control relay.
2.6 Alarm contact
Switching contact 12 at RM 2112 (switch-
ing contact 6 at RM 2106) can be used
either as a control output for a capacitor
stage or as an alarm contact. The rele-
vant selection is made in setup mode
under -3-.
In the event of an alarm, switching con-
tact 6 is closed.
It should be noted that, even when oper-
ating as an alarm contact, this switching
contact continues to have potential bind-
ing to the supply voltage of the control
relay. If a floating potential contact is re-
quired, use an additional contactor relay.
