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Zenith ZBTS T-series 100-1200A, INSTALLATION AND OPERATING INSTRUCTION
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9.5 Heater
Heater is used for prevention of conden-
sation, corrosion and leakage currents in
Bypass-Isolation Automatic Transfer
Switch cabinet.
Heater and thermostat package are avail-
able as accessory. When ordered, it is in-
stalled in working order at the factory.
Operation: When temperature in cabinet
drops below thermostat setpoint, heater
—
Fig. 9.13 Power supply for heater is taken from terminals
X400:1 (LOAD L2) and X400:2 (LOAD L3) on the back side
of the Control Plate.
is turned "ON". When temperature is
above set point, heater turns "OFF".
unless otherwise specified.
All the specified Heater documents are
delivered with the cabinet. See drawing
70R-2010.
X400:1 (LOAD L2)
X400:2 ( LOAD L3)
Fig. 9.14 Place of the heater thermostat package on
the front side of the Control Plate and heater strips
behind the Control Plate in top of the compartment
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