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Figure 19: IP65 T-Box and correct electrical installation
Assemble the cable gland M25 with a torque of 9.8 - 10 Nm. The cable gland is designed for cable
diameters of 10 to 17 mm – see Figure 20 & Table 11. The degree of protection (IP) will be
safeguarded only if sealing and cable glands are properly assembled. Only run the compressor with
permanently wired cables. The system manufacturer/installer shall provide the required strain relief.
Finally, close the cover of the terminal box applying a torque of 1.8 - 2 Nm. The degree of protection
(IP) will be safeguarded only if the cover is properly assembled.
Standard T-Box
Figure 20
Item
Grounding nut
Cable gland
Grounding screw
Connection screws
Table 11: Terminal box connections and torques
4.4
Motor insulation
The motor insulation material is class "B" (TF*) within maximum allowable operating temperatures
according to IEC 34-1 or DIN 57530.
4.5
Motor protection
Independently from the internal motor protection, fuses must be installed before the compressor. The
selection of fuses has to be made according to EN 60269-1 or EN 60204-1 and compressor
AGL_HP_ST_ZHKCU_EN_Rev01
T-Box with T block
Symbol
Torque (Nm)
4 - 4.4
9.8 - 10
1.8 - 2
1.4 - 1.7
T-Box cover
Diameter
Cable 10 - 17 mm
21
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