NOTE:
1). Customer to specify the exact nominal power supply available at site so that electrical components are
selected accurately.
2).Main power must be supplied from a single field supplied and mounted fused circuit breaker.
3).The compressor crankcase heaters must be energized for hours before the unit is initially started or after a
prolonged power disconnection.
4).All field wining must be in accordance with local standards.
5).Neutral line required on 380V-3Ph-50Hz(5 wires) power supply.
6).Rated load Amps values are on nominal conditions.
7).The ±10% voltage variation from the nominal is allowed for a short time not permanent.
2. Electrical components introduction
1) Power protector
This module is used to detect power supply and provide protection in case of phase loss, phase
sequence, and under voltage of incoming line power, so as to prevent damage to the compressor or
other components caused by power failure. Some models also provide protection for overvoltage and
three phase imbalance.
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