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Essex Electro Engineers A427B Electrical AC Load Bank
The Essex A427B is a portable, skid
mounted, resistive load unit. It is a completely self-contained unit mounted
with a weather resistant enclosure. The Essex A427B operates as a loading
and testing device for electrical generating equipment. This is
accomplished by applying various combinations of the resistive load
increments to simulate any output load.
The load bank is designed to test the
output characteristics of generating plants rated at 120/208 and 240/416
volts, three phase, 4 wire; 120 or 240 volts single phase, 2 wire. The
load bank can operate at frequencies between 50 and 1000 cycles per
second. Input power terminals are supplied for connection of power cables.
Power cables are not supplied with the equipment. The load bank can apply
0.5 to 3 kilowatts variable load and 3, 6, 9, 12 KW fixed loads. When
fixed and variable loads are applied in combination, the load bank can
supply any load form 0.5 to 33 kilowatts on either single or balanced
three-phase operation.
Specifications
| Continuous rating |
120/208 or 240/416 volt,-3-phase,4 wire, or 120 or 240 volt, 1phase, 2 wire at 50-1000 cps |
| Fixed loads |
3, 6, 9, 12 or any combination upto 30 KW in multiples of 3 |
| Variable loads |
0 to 3 kW combined fixed andvariable control of load between0.5 KW and 33 kW,single phase or balanced 3phase operation with fixedand variable load switches inproper combination |
| Temperature limits |
25 F. (-4C.) to + 125 F. (52 C .) atrelative humidity up to 100% |
| Altitude range |
Sea level to 8,000 feet (2440 meters) |
| Acceleration limits |
2.5 g momentarily applied to any 3 major axis ; in both directions |
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