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5.0 ELECTRICAL
5.1 ELECTRICAL (MACHINE WIRING AND SUPPLY)
SEE FIG. 4,5 AND 6
All electrical work to be carried out in accordance with l.E.E. standards,
latest issue, or local codes of practice as applicable.
The machine should be installed in accordance with EMC2004/108/EC.
Protected supply to incorporate fuses or motor type circuit breakers
(Type GU, FAZC) to specified rating, (see Data Sheet). H.R.C. fuses are
recommended. An isolator which disconnects all poles must bemust be
fitted within 2m and in sight of machine.†
All units must be correctly earthed-grounded and an earth leakage trip
installed.
INCONSISTENT ELECTRICAL SUPPLY
The following limits of operation must not be exceeded if Dantherm
Ltd. machines are to be guaranteed either in performance or warranty
terms:
Voltage
Three-phase machines (UK)
Three phase machines (60Hz)
Three phase machines + N (60Hz)
Cycle frequency (50Hz)
Cycle frequency (60Hz)
N.B. This voltage must be available at the heat pump whilst running.
The voltage must not drop below the above figures when starting the
machine.
† Note the isolator must have a minimum of 3mm air gap when turned
off.
NOTE: All machines are fitted with a phase protection relay and will not
run if the phases are not connected in correct order (phase sequence)
or if the supply voltage is 15% less than the nominal voltage. (415V
for 3N~ 50Hz). The lamp on the phase rotation relay, situated in the
electric box, is illuminated when the phases are correctly connected
and the voltage is sufficient. The undervoltage protection feature is not
present in phase protection relays fitted in 220V 3~ 60Hz machines.
SD566251 ISSUE 36
Minimum
Maximum
360V
440V
187V
253V
360V
440V
47.5Hz
52.5Hz
57.0Hz
63.0Hz
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