5 Mounting
Maschinenfabrik Reinhausen GmbH 2020
37
1800138/08 EN
TAPMOTION
®
ED
Circuit
Function
Cable type
Monitoring circuit
Temperature sensor
Shielded
Signaling circuits
Signal transmission
Shielded
Cross wiring between motor-drive
units
Power supply
Unshielded, separate cable
Tap-change supervisory control
Shielded
Pulse circuit, raise/lower
Shielded
Trigger circuit Q1-Off
Shielded
Table 7: Recommendation for connection cable
Installing electrics for motor-drive unit
WARNING
Danger of death or severe injury!
An energized transformer and energized on-load tap-changer components
could cause death or serious injuries when installing the electrics!
► Adherence to the following safety precautions is mandatory.
The drive may only be connected to circuits that are equipped with an exter-
nal and all-pole isolating device as close to the drive as possible to ensure
that the unit can be fully de-energized if required (service, maintenance etc.).
Furthermore, a drive without its own overcurrent protective device for the
control circuit and the heater circuit may only be connected to circuits that
are equipped with an external overcurrent protective device. The protective
device must ensure protection against indirect touching. The protection rec-
ommended by Maschinenfabrik Reinhausen GmbH close to the drive is 1.6
A C (3.0 A C is to be used in a heater circuit with additional heating and sup-
ply voltage <127 V AC/DC). This is to be verified after installation by carrying
out a measurement.
Suitable equipment includes isolating devices in accordance with IEC
60947-1 and IEC60947-3 (e.g. circuit breaker). When selecting the circuit
breaker type, the properties of the relevant circuits (voltage, maximum cur-
rents) must be observed. The following should also be noted during installa-
tion:
▪ It must be easy for the operator to access the isolating device
▪ The isolating device must be labeled for the device and circuits to be iso-
lated
▪ The isolating device may not be a part of the power line
▪ The isolating device may not interrupt the main protective conductor
Unless specified otherwise, the connections for the supply circuits must have
a conductor cross-section of at least 2.5 mm
2
(16 AWG). Check applicable
standards and directives to ensure that the specified minimum cross-section
of the supply line is sufficient.
5.5
