Chillers
DeltaChill™ Air Cooled and FreeCool
Introduction
17
Chiller Technical Manual 7267818 V1.13.0_01_2018
Electrical
Electrical Overview
Location of Electrical components within the chiller.
A weatherproof electrical power and controls panel shall be situated at the end of the unit and contains:
●
Individual mains power isolation for each circuits compressors.
●
Separate electrical isolation for fans.
●
Dedicated bus-bar chamber for connection of incoming 3 phase and earth mains power supply.
● Emergency stop fitted to controls compartment door.
●
Separate, fully accessible controls compartment allowing adjustment of set points whilst the unit is operational.
●
Circuit breakers for protection of all major unit components.
●
Phase rotation relay incorporating phase loss protection.
●
The electrical power and control panel is wired to the latest European standards and codes of practice.
●
Mains supply is 3 phase and a neutral is not required, refer to interconnecting wiring.
●
Separate 230V 1ph 50Hz permanent supply is required for the controls and safety features. Isolator allows for a
maximum cable size of 10 mm.
●
Electrical terminals for external evaporator pipe work trace heating (230V / 500 Watt) are provided. The external
trace heating is fitted by others.
Pumps
Circuit 3
Compressors
Bus-bar Chamber
Fans
Power Factor
Correction
Circuit 1
Compressors
Panel Ventilation
Controls
Circuit 2
Compressors
