ANCA Motion AMD5x Series, User Manual

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AMD5x Passive Infeed Unit and AMD5x Servo Drive - User Guide
ANCA MOTION D-000129 Rev 09 62
5.3
Power Disconnect and Protection Devices
A manually-operated mains supply disconnecting device
(the “Isolator”) must be installed between the AC power
source and the PIU. The disconnecting device must be of a type that can be locked to the open position for
installation and maintenance work, and must comply to Safety of Machinery standard EN 60204-1 and local
regulations.
The AMD5x PIU must have suitable input power protection for the three phase input. This protection must
conform to the requirements and applicable safety regulations of the region of operation. An appropriate approval
for switches is IEC 60947-2 and for circuit breakers IEC 60947-3.
Table 23: Recommended AC Input Switchgear and Input Mains supply wire sizes
PIU
Power
rating
3Φ AC supply
Rated
Continuous
Input Current
(rms)
Isolator
Thermal
Rating
Circuit
breaker
(C-type)
Contactor
AC3*
Rating
Minimum wire size
AWG mm2
15kW 380-480V L-L 26A 32A 32A 32A 11 4
24kW 380-480V L-L 35A 40A 40A 40A 10 6
*A Contactor AC3 Rating is a switching rating, and this is lower than its AC1 Thermal Rating.
Note: Wire sizes are based on 75 °C (167 °F) insulated copper wire. Use of higher temperature
cable may allow smaller gauge wires. Size wire gauges to conform to the local electrical installation
regulations.

The Input Mains supply wire size should be used for the following power connections:

3 Phase AC connection from Isolator to Circuit Breaker.

3 Phase AC connection from Circuit Breaker to Contactor(s).

3 Phase AC connection from Contactor(s) to EMI Filter.

3 Phase AC connection from EMI Filter to Line Reactor.

3 Phase AC connection from Line Reactor to PIU.

Wire sizes in Table 23 are a guidance only as installation methods such as grouping, length,
use of conduits and ambient temperature may affect current capacity.

Where more than one wire per connector terminal is used, the combined diameters should not
exceed the connector or terminal maximum wire capacity.

The connectors for X1, X2 & X11 are suitable for both solid and stranded wires.

Circuit Breakers must be thermal magnetic type and have genuine C-curve. Genuine C-curve
Circuit Breakers are essential to allow the AMD5x PIU to deliver the published overload
capability. See
10.4.1 AMD5x PIUs for AMD5x PIU overload capability.