FORM QWC3-EG1 (217)
QUANTECH
7
Equipment Overview (Cont'd)
POWER AND CONTROL PANELS
All controls and motor starting equipment necessary for unit operation shall be factory
wired and function tested. The panel enclosures shall be designed to NEMA 1 (IP 32) and
manufactured from powder-painted galvanized steel.
The Power and Control Panel shall be divided into a power section for each electrical
system, a common input section and a control section.
Each power panel shall contain:
• Compressor starting contactors
• Control-circuit serving compressor capacity control
• Compressor
• Contactor coils
• Compressor motor overloads
The compressor motor overloads contain current transformers which sense each phase,
as an input to the microprocessor, to protect the compressor motors from damage due to:
• Low input current
• High input current
• Unbalanced current
• Single phasing
• Phase reversal
• Compressor locked rotor
The common input section shall contain:
• Control supply transformer providing 115V
• Customer relay board
• Control circuit switch disconnect/emergency stop device
Содержание QWC3
Страница 1: ...MODEL QWC3 WATER COOLED SCROLL LIQUID CHILLER 50 200 TONS 60Hz R 410a FORM QWC3 EG1 217 ...
Страница 4: ...QUANTECH FORM QWC3 EG1 217 4 THIS PAGE INTENTIONALLY LEFT BLANK ...
Страница 39: ...FORM QWC3 EG1 217 QUANTECH 39 Unit Dimensions Four Compressor Cont d ...
Страница 41: ...FORM QWC3 EG1 217 QUANTECH 41 Unit Dimensions Five Six Compressor Cont d ...
Страница 56: ...QUANTECH FORM QWC3 EG1 217 56 Typical Control Panel Wiring 4 COMPRESSOR UNITS LD21794a ...
Страница 57: ...FORM QWC3 EG1 217 QUANTECH 57 Typical Control Panel Wiring Cont d 4 COMPRESSOR UNITS LD21794b ...
Страница 69: ...FORM QWC3 EG1 217 QUANTECH 69 NOTES ...