Quantech QCC3 Manual page 56

FORM QCC3-EG1 (517)
Guide Specifications (Cont'd)
C. Power Supply Connections:
1. Single Point Power Supply: Single point Terminal Block for field connection and in-
terconnecting wiring to the compressors. Separate external protection must be sup-
plied, by others, in the incoming power wiring, which must comply with the National
Electric Code and/or local codes.
2. Single Point: Single point Non-Fused Disconnect(s) and lockable external handle
(in compliance with Article 440-14 of N.E.C.) can be supplied to isolate the unit
power voltage for servicing. Separate external fusing must be supplied, by others,
in the in coming power wiring, which must comply with the National Electric Code
and/or local codes.
3. Single Point Disconnect with Individual System Breakers: Single point Terminal
Block with Non- Fused Disconnect and lockable external handle (in compliance
with Article 440-14 of N.E.C.) can be supplied to isolate power voltage for servicing.
Factory interconnecting wiring from disconnect to factory supplied circuit breakers.
4. Single Point Circuit Breaker: Single point Terminal Block with Circuit Breaker and
lockable external handle (in compliance with Article 44014 of N.E.C.) can be sup-
plied to isolate power voltage for servicing. Incoming power wiring must comply with
the National Electric Code and/or local codes.
D. Pressure & Temperature Transducers and Sensors
1. Discharge Pressure Transducers: Permits unit to sense and display discharge pres-
sure.
2. Suction Pressure Transducers: Permits unit to sense and display suction pressure.
3. Suction Temperature Sensors: Permits units to sense and display suction tempera-
ture.
E. Control Power Transformer: Converts unit power voltage to 120-1-60 or 120-1-50 for
50Hz units (500 VA capacity). Factory mounting includes primary- and secondary-wir-
ing between the transformer and the control panel.
F. Motor Current Module: Capable of monitoring compressor motor current. Provides ex-
tra protection against compressor reverse rotation, phase-loss and phase imbalance.
Options consists of one module per electrical system. (Factory mounted)
G. Power Factor Correction Capacitors: Provided to correct unit compressor factors to a
0.900.95.
H. Condenser Coil Environmental Protection:
1. Pre-Coated: Epoxy coated aluminum fin stock to guard from corrosive agents and
insulate against galvanic potential. For mild seashore or industrial locations
2. Copper Fin: Provide copper fins in lieu of aluminum.
3. Post-Coated Dipped: Dipped-cured coating on condenser coils for seashore and
other corrosive applications (with the exception of strong alkalis, oxidizers, and wet
bromine, chlorine and fluorine in concentrations greater than 100ppm).
56 QUANTECH