Mains Connections; Motor Version - Bitzer 2KES-05 Instructions De Service

Compressors and electrical equipment comply with the
EU Low Voltage Directive 2014/35/EU.
Connect mains cables, protective earth conductors and
bridges (if needed) as specified on the labels in the ter-
minal box. Observe EN60204-1, the safety standard
series IEC60364 and national safety regulations.
NOTICE
!
!
Risk of short-circuit due to condensation water
in the terminal box!
Use only standardised cable bushings.
When mounting, pay attention to proper sealing.
NOTICE
!
!
Risk of motor damage!
Improper electrical connection or compressor
operation at incorrect voltage or frequency may
lead to motor overload.
Observe the specifications on the name plate.
Connect properly and check the connections for
tight fitting.

5.1 Mains connections

When dimensioning motor contactors, feed lines and
fuses:
• Use the maximum operating current or maximum
power consumption of the motor as a basis.
• Select the contacts according to the operational cat-
egory AC3.
• Set the thermal overload relays to the maximum op-
erating current of the compressor.
5.1.1

Motor version

Star or delta motor
Standard motor for:
• 2KES-05(Y) .. 2FES-3(Y)
• 2EES-2(Y) .. 2CES-4(Y)
• 4FES-3(Y) .. 4BES-9(Y)
• 22EES-4(Y) .. 22CES-8(Y)
• 44FES-6(Y) .. 44BES-18(Y)
• 4FDC-5Y .. 4CDC-9Y
This motor has been designed for direct-on-line start at
two different voltages. The higher voltage is used for
star mode operation and the lower voltage for perman-
ent operation in delta mode. Depending on the selected
mode, adjust the positions of the connection bridges or
have their functions performed externally (e.g. by
means of contactors).
18
Part winding (PW) motor
Time delay until switch-on of the 2nd part winding: max.
0.5 s!
Make the connections correctly! Wrong electrical con-
nections will lead to opposite fields of rotation or to
fields of rotation out of phase and therefore to a motor
lock!
Standard motor for:
• 4VE(S)-6Y .. 4NE(S)-20(Y)
• 4JE-13Y .. 4FE-35(Y)
• 6JE-22Y .. 6FE-50(Y)
• 44VE(S)-14(Y) .. 44NE(S)-40(Y)
• 44JE-30(Y) .. 44FE-70(Y)
• 66JE-50(Y) .. 66FE-100(Y)
• 4VDC-10Y .. 4NDC-20Y
Winding partition 50%/50%.
Motor contactor selection:
1st contactor (PW 1): 60% of the max. operating cur-
rent.
2nd contactor (PW 2): 60% of the max. operating cur-
rent.
Motor version 3 when operated with external frequency
inverter: Select contactors for max. operating current at
70 Hz!
• 8GE-50(Y) .. 8FE-70(Y)
Motor version Δ/ΔΔ with 60%/40% winding partition.
Motor contactor selection:
1st contactor (PW 1): approx. 70% of the max. operat-
ing current.
2nd contactor (PW 2): approx. 50% of the max. operat-
ing current (see adhesive label in terminal box). Strictly
observe the order of the part windings!
Star-delta motor
The time delay between the switch-on of the com-
pressor and the switch-over from star to delta operation
shall not exceed 2 s.
Make the connections correctly!
Wrong electrical connections will lead to short-circuit!
KB-104-7