Mounting and electrical connection
Ref. no. 2103 REG ES
Page 8
of 44
NOTE: The mains infeeds L1, L2 and L3 must be protected with
≤
16 A.
NOTE: L2 and L3 are not required for the operation of the energy counter and
can be optionally left out, as the device is only supplied via L1 on the mains
side.
3.2. Operation with external current transformers
If the device is operated with external current transformers, then the external current
transformers are to be installed in a distribution cabinet on a DIN rail according to
DIN EN 60715.
The device only supports external current transformers with a primary current of 75 A
and a 5 A secondary current. We recommend using the same transformer type for
each of the three inputs of the energy detector 2103 REG ES. Current transformers
of type PACT MCR-V1-21-44-75-5A-1 (PHOENIX CONTACT Reference number
2277611) are recommended with the accessories of the support rail adapter PACT
MCR-RA (PHOENIX CONTACT Reference number 2277598).
The accuracy of the measurement is primarily dependent on the current
transformer type used.
3.2.1. Mounting
and
connection
DANGER!
Electric shock when live parts are touched. An electric shock can be
fatal.
Before working on the device, disconnect the connection cables and
cover live parts in the area.
Do not remove the housing cover! Dangerous voltages may still be
present even after removing the connections!
In transformer mode, the external current transformers are also to be
regarded as live on the secondary side.