Basic Electrical Wiring Diagram (For 3 Phase) - Hitachi CA47TLA-D2PE3 Manual

2. BASIC ELECTRICAL WIRING DIAGRAM (for 3 phase)

The following electrical wiring diagram shows a typical example of protection designs. The
electrical circuits to protect the compressor should be designed in consideration of system
designs and the actual usage state.
Power Supply：3φ
380-415V / 50Hz
Mark Name
MC Compressor
※※
CMC Magnetic Contactor
Reverse Phase Protection
※※
RPR
Relay
※※
OCR Overcurrent Relay
※※
PS(H) Pressure Switch (High)
※
DT Discharge Gas Thermostat
※※
PB1 Push Button Switch (ON)
※※
PB2 Push Button Switch (OFF)
※※
EF Fuse
※※
ELB Electric Leakage Breaker
Notes:
1. All parts with mark (
※※
2. Parts with mark (
customer side.
Remarks
Need capacity above rated current of OCR
Quick response type (response time≦20ms)
Operate current: The maximum allowable current
values described in Clause 3 "General Specifications" of
the specifications.
Pressure setting value: The upper limits of the
discharge gas pressure described in Clause 6 "Working
Range (Pressure and Temperature)" of the
specifications.
Open: 130℃±5℃
Closed: 100℃±15℃
For control circuit
・Sensed current:30mA (high sensitivity type)
・Operate time:0.1 second (high speed type)
・Please install ELB per compressor.
※ ※※
) or ( ) are not included in the compressor price.
) are not available on request and they should be equipped by
12