Voltage No Longer A
Decision For Shindaiwa
The 20 k W DGK25C gen-set
from Shindaiwa features the
Ultra Quiet Technology and
a Tier 2 Isuzu diesel engine
rated 31 hp.
In most portable and mobile generator applications, the operator
relies on the voltage regulator
switch to toggle between single-phase and three-phase operation.
The latest introduction from Shindaiwa Inc. is designed to simplify this
process by allowing both single-phase and three-phase operation to
Tualatin, Ore.-based Shindaiwa is
offering the dual-voltage feature on its
new DGK25C generator, a 20 k W ( 25
kVA) gen-set that is also equipped with
the company’s Ultra Quiet Technology.
The unit is powered by a 2.179 L four-cylinder Isuzu 4LE1 diesel engine rated
31 hp at 1800 rpm and 60 Hz (1500
rpm at 50 Hz). The Tier 2 engine is coupled with a brushless ac alternator,
which Shindaiwa said it will begin producing in-house. The alternator has F
Class insulation and uses a star pattern
neutral winding. Operation in single-phase is approved for 120, 127, 139,
240, 254 and 277 V and in three-phase
at 208, 220, 240, 416, 440 and 480 V.
Shindaiwa’s Simul-Phase Technology delivers the generator’s dual-voltage operation using an automatic
voltage regulator. This is designed to
automatically match power output to
the load requirement so operators are
able to use 120/240 V and 240/480 V
at the same time. The company said
the dual-voltage function on the
DGK25C is beneficial, as users are
able to power lights, air conditioners
and electric tools that use single-phase power, while supplying motors
for compressors and pumps without
using a transformer.
System monitoring on the DGK25C
generator is operated at the control
panel with gauges for voltage, frequency, amperage, oil pressure, water temperature, battery charge and hours.
Automatic shutdown occurs for low oil
pressure and high coolant temperature. To protect the generator during an
overload, Shindaiwa has engineered
the thermal relay to open the main circuit breaker.
The DGK25C gen-set also integrates Shindaiwa’s Ultra Quiet Technology, which can reduce emitted
noise levels to 56 dB(A) at full load,
the company said. The technology
uses a combination of air dams and
insulated panels to redirect and