Electrical Connection; General Recommendations; Electrical Installation; Cable Connectors - Emerson Copeland Scroll ZRH49KJE Application Manuallines

4

Electrical connection

4.1

General recommendations

The compressor terminal box has a wiring diagram on the inside of its cover. Before connecting
the compressor, ensure the supply voltage, the phases and the frequency match the nameplate
data.
Compressors can be delivered with various types of connection depending on the bill of material:
For ¼" standard flag connectors
For a push-on molded plug
4.2

Electrical installation

The motor insulation material is class "B" for compressor models covered in this guideline. This
is according to IEC 34-1 or DIN 57530.
Figure 7: Power circuit three-phase compressor

4.2.1 Cable connectors

Figure 8
Compressors are delivered with a Domed Cover IP21 for ¼" spade connectors (BOM 540, 541).
Another connection option is available on request.
Cable sizes are to be selected according to DIN ISO 0100, IEC 364 or national regulations.

4.2.2 Terminal box

The terminal box is IP21 for all models.

4.2.3 Motor winding

All three-phase motors are connected in star.

4.2.4 Protection devices

Independently from the internal motor protection, fuses must be installed before the compressor.
Selection of fuses has to be carried out according to VDE 0635, DIN 57635, IEC 269-1or EN 60-
269-1.
8 C6.2.7/0302-1007/E