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AUXILIARY POWER RECEPTACLES
Start the engine and set the “IDLER” control switch to the “High Idle” mode. Voltage is now correct at the receptacles for auxiliary power. This must be done before a tripped GFCI module can be reset properly. See the MAINTE- NANCE section for more detailed information on testing and resetting the GFCI module.
The auxiliary power of the DX450 consists of two 20 Amp- 120 VAC
The auxiliary power capacity is 12,000 watts Peak, 11,000 Watts Continuous of 60 Hz, single phase power. The auxil- iary power capacity rating in watts is equivalent to volt- amperes at unity power factor. The max permissible current of the 240 VAC output is 50amps.
The 240 VAC output can be split to provide two separate 120 VAC outputs with a max permissible current of 50 Amps per output to two separate 120 VAC branch circuits (these circuits cannot be paralleled). Output voltage is with- in ± 10% at all loads up to rated capacity.
The
120 V DUPLEX RECEPTACLES AND GFCI MODULES
A GFCI Module protects the two 120V auxiliary power receptacles.
A GFCI (Ground Fault Circuit Interrupter) is a device to pro- tect against electric shock should a piece of defective equipment connected to it develop a ground fault. If this sit- uation should occur, the GFCI module will trip, removing voltage from the output of the receptacle. If a GFCI module is tripped see the MAINTENANCE section for detailed information on testing and resetting it. A GFCI module should be properly tested at least once every month.
The 120 V auxiliary power receptacles should only be used with three wire grounded type plugs or approved double insulated tools with two wire plugs. The current rating of any plug used with the system must be at least equal to the current capacity of the associated receptacle.
NOTE: The 240 V receptacle has two 120 V circuits, but are of opposite polarities and cannot be paralleled.
All auxiliary power is protected by circuit breakers. The 120V has 20 Amp circuit breakers for each duplex recepta- cle. The 120/240V Single Phase and the 240V Three- Phases have a 50 Amp
STANDBY POWER CONNECTIONS
The DX450 is suitable for temporary, standby or emergency power using the engine manufacturer’s recommended maintenance schedule.
The DX450 can be permanently installed as a standby power unit for 240 VAC, 3 wire, single phase, 50 amp service. Connections must be made by a licensed electrician who can determine how the 120/240 VAC power can be adapted to the particular installation and comply with all applicable electrical codes.
•Install the
•Take necessary steps to assure load is limited to the capacity of the generator by installing a 50 amp, 240 VAC double pole circuit breaker. Maximum rated load for each leg of the 240 VAC auxiliary is 50 amperes. Loading above the rated output will reduce output voltage below the allowable - 10% of rated voltage which may damage appliances or other
•Install a 50 amp, 120/240 VAC plug to the double- pole circuit breaker using No. 6, 4 conductor cable of the desired length.
•Plug this cable into the 50 Amp, 120/240 Volt recep- tacle on the case front.
WARNING
•Only a licensed, certified, trained electrician should install the machine to a premises or resi- dential electrical system. Be certain that:
•The installation complies with the National Electrical Code and all other applicable electri- cal codes.
•The premises is isolated and no feedback into the utility system can occur. Certain laws require the premises to be isolated before the generator
is linked to the premises. Check your local requirements.
