Rittal SK – System Climate Control

4.6
Cooling units
Electrical connection and control
Supply connection
● Supply connection data (voltage and frequency) must be
observed in accordance with the rating plate.
● The pre-fuse specified on the rating plate must be used.
Voltage range 400 V/460 V
Frequency range 50 Hz/60 Hz
400 V/50Hz 3~ 400 V/60Hz 3~
Rated current 2.5 A 3.0 A
Start-up current 6.5 A 7.5 A
Motor circuit
breaker
10 A 10 A
Rated consumption
L35 L35
L35 L50
930 W
1150 W
1150 W
1400 W
Useful cooling L35 L35 2000 W 2350 W
output
L35 L50 1450 W 1690 W
Coolant / filled
weight
R 134a, 950 g (34 oz), Fluid Group 2
Use of door operated switches
One floating door-operated contact should be used for each
unit; under no circumstances must several cooling units be
operated via one door operated switch.
In environments with increased electromagnetic interference,
a shielded cable should be used.
Alternatively, the door contact may be switched e.g. via an
additional relay in the vicinity of the cooling unit.
Note:
The cables should be laid separately from the mains cables;
short cable distances should be observed.
Cabling
1 Signal data cable
2 Control cable
3 Motor cable
The power cable, power supply unit cable, signal cable and
data cable must be laid separately; cable lengths should be
kept as short as possible. Avoid coupled sections.
40 Rittal System Climate Control
3
2
1
3
2
1