National Lab OCGE 111, Operating And Maintenance Manual

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5.2.2 CONNECTION TO THE ELECTRICITY MAINS
The properties of the electricity mains (size, protection system, earth connection) must comply with the legislation
applying to the electrical properties of the chiller in the country in which it is installed.
The general regulations pertaining to installation are listed below.
The electrical installation may only be carried out by qualified personnel!
The mains connection should be established with a rubber-sheathed cable connected to a TN-C system with direct
earthing.
230 V version (1 phase):
Connection with a single-phase, three-wire system (1/N/PE AC). The phase conductor and the neutral conductor
must be connected directly to the main switch of the chiller.
The protective earth conductor must be connected to the earthing point of the chiller.
400 V version (3 phase):
Connection with a three-phase, four-wire system (3/PEN AC). The three-phase conductor must be connected di-
rectly to the main switch of the chiller. No neutral conductor is used. The PEN must be connected to the earthing
point of the chiller.
If different mains voltages and frequencies are available, the country-specific features must be observed.
Make sure that the mains voltage and the frequency match the data on the identification plate of the chiller and
agree with those in the table in the supplement and that the permitted values are not exceeded. Check the mains
for correct values and test the function of the earthing and protection systems.
Install a general isolating switch for the electricity mains close to the chiller. The connecting circuit for the chiller
must be equipped with a circuit breaker and residual current protective device.
You can find information on the electrical power input values for the chiller in the supplement.
Before you connect the chiller to the mains, make sure that the general isolating switch disconnects the chiller from
the electricity mains.
Pass the wires in the flexible polymer cable gland in the control panel (see photo for position) to connect the power
cable. Feed the connecting lead through the aperture in the rear plate (PCGE 31-PCGE 141) on the base of the
chiller. Lay the cable on the upright up to the gland on the base of the switch cabinet (PCGE 200- PCGE 3300). In-
side the switch cabinet lay the cable in the installation duct up to the main switch, where it is connected directly.
Check that the screws on the terminal clamps are firmly seated!
Holes for feeding through the power cable
Cable inlet