Terminal Box - Ip54; Terminal Box - Ip65 - Emerson Copeland ZB12KCU Application Manuallines

4.3.1 Terminal box – IP54
ZB*KCU compressors with BOM 534 (single compressor) and BOM 434 (tandem-ready compressor)
are supplied with an IP54 terminal box. This terminal box variation cannot be applied in an ATEX
environment.
Figure 17: IP54 T-Box and correct electrical installation with cable gland
Compressor model Grounding screw Terminal screw
(IP54 T-box) torque torque
ZB12KCU to ZB49KCU 3.6 - 4.4 Nm 1.4 - 1.7 Nm
Table 10: Tightening torques
4.3.2 Terminal box – IP65
ZB*KCU compressors with BOM 524 (single compressor) and BOM 424 (tandem-ready compressor)
are supplied with an alternative IP65 metal terminal box, which complies with the ATEX Directive
and can be used in an ATEX Zone 2 environment, in accordance with ATEX Directive 94/9/EC part
II 3G.
The maximum thickness of the cable connectors for the terminal box shall be 1 mm for all models –
see Figure 18.
Figure 18: Maximum thickness of cable connectors
The first two nuts already installed on the Peko bolts shall not be removed, as they will ensure a
good tightness of the terminal box assembly. Make sure to assemble the ground connection of the
Peko bolt with a torque of 4 - 4.4 Nm and the ground connection between the cover and the body of
the terminal box with a torque of 1.8 - 2 Nm.
AGL_Ref_ST_ZBKCU_EN_Rev01 19