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THREE-PHASE HV VACUUM
CONTACTORS & CIRCUIT BREAKERS
HQ3 & HG3 Series
The stored energy closing, upright and low profile HV
vacuum contactor models, HQ3 and HG3, are ideally suited for high
power electronic supplies and for use in AC high power industrial
control systems. The upright HQ3 model is designed for indoor
systems or metal-clad enclosures. Its compact, light-weight
characteristics make it easy for engineers to design smaller,
lighter enclosures to insure more space for other apparatus. |
HQ3 Upright |
| The HG3 low profile model is designed
for fixed or mobile applications such as electrically powered
transit vehicles or for use in ships or mines. Both types can be
mounted in any attitude directly into the equipment or built into
metal-clad enclosures. G-10 Epoxy glass is standard insulation for
both models. For special insulation or insulation length
requirements consult the factory.
Some models can be mounted in oil
or insulating gas. Most models have 1-1/2 to 2 cycle opening times.
They also have a highly reliable vacuum interrupting capability of
up to 750MVA at 15.5KV, with momentary current to 20,000 amps for 10
cycles, and 40,000 amps for one cycle fuse protected. Three SPDT
form C, 15A, 480V AC auxiliary contacts are standard and up to four
may be specified. Optional 10 amp, 125V DC auxiliary contacts are
available. Single-pole and two-pole units are available as well as
units for voltages up to 300KV.
Stored energy closing requires 115V AC 8amps
during, charging, 1/2amp holding. |
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