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2.4 Electrical Specifications
2.4.1
General
Parameter
Specification
Voltage
D
240/416 volt, 3-phase, 4-wire, 60 Hz,
80 kW, 100 kVA, 139 amps.
output
D
277/480 volt, 3-phase, 4-wire, 60 Hz,
80 kW, 100 kVA, 120 amps.
D
Other voltages can be provided by using
an external transformer.
Auxiliary
Single phase auxiliary supply for operating
power
unit connected internally. Stationary
requirements
standing unit requires a maximum 40 A
single phase to start.
2.4.2
Utility Mode
These values refer to the conditions at the output
terminals of the generator. Conditions at the output of an
external transformer may differ.
Parameter
Specification
Grid connection
The generator has been designed so
capability
that it is suitable for connection to the
utility system in conformity with the
regulatory requirements. The
generator system is designed to
ensure that it functions correctly at the
generator terminals.*
Allowable voltage
±10%
range
Allowable
±1%
frequency range
Harmonic currents As per IEEE 519, Table 10.3
(individual <3%, total demand
distortion <5%)
Output power
Generator output power factor is
factor
adjustable between 0.6 lag, 1.0--0.6
(displacement)
lead.[
Minimum utility
fault level capacity 5 kA
Maximum utility
fault level capacity 20 kA
* To fulfil the regulatory requirements, further protection systems
(possibly at a higher voltage) may also be required. These
components are not supplied with the generator package. Your
authorized distributor can assist in the selection of this
equipment, if required.
[ This assumes that the total current drawn from the power
conditioner does not exceed the rated value.
6
Section 2 Technical Data and Specifications
2.4.3
Insulation Test Specification
Perform insulation tests according to the supplied
instructions to prevent damage to the electrical system
of the generator set.
Parameter
Power circuits
110V
Power circuits
110V
2.4.4
Generator Protection
(Factory Default Settings)
Protection is fitted to the generator output feed to the
isolating generator transformer. Additional protection
(e.g. reverse power) may also be fitted by the customer
to the generator transformer output circuit breaker and
utility feed circuit breaker. These will be set using the
relevant national standards. Protection for embedded
generators in utility mode may need to be fitted by the
user. Internal protection settings are configured and
protected by passwords.
Parameter
Specification
Overcurrent
300% of maximum rated current
(instantaneous)
for 2 cycles.
Thermal overload
System will automatically ensure
that the system will not supply
more than maximum rated
current by dropping terminal
voltage. Under normal
circumstances, if an excessive
load is placed on the generator,
the system will shut down on
undervoltage.
Ground leakage
100 mA @ 60 ms
Ground overvoltage
Operates if more than 5 volts
relay
exist between chassis earth and
grounded neutral.
Overvoltage
115% of nominal RMS rated
voltage.
Undervoltage (voltage
90% of nominal RMS rated
mode)
voltage.
Undervoltage (utility
90% of nominal RMS rated
mode)
voltage
Under/overvoltage time
50 x cycle period time—
delay
1000 ms for 50 Hz, 833 ms for
60 Hz
Overfrequency
101% of nominal frequency.
Underfrequency
96% of nominal frequency.
Under/overfrequency
40 x cycle period time—
time delay
800 ms for 50 Hz, 667 ms for
60 Hz
Specification
500 VDC
1000 VDC
TP-6242
8/03
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