Operation
Avtron Model LPH400 • Resistive Load Bank
Part Number LPH400D30693-1
4-4
9.
With the MASTER LOAD switch in the OFF position, verify that the voltage displayed
by the Digital Meter matches the position of the LOAD VOLTAGE Select switch.
10.
The resistive loading is selected by toggle switches, using any one or combination of
toggle switches to make up a given load.
11.
By placing the MASTER LOAD switch to the ON position, the preselected load will be
applied to the power source.
12.
Any KW LOAD switch can be added or removed as required with the MASTER LOAD
switch closed (ON).
13.
Monitor the unit under test using the digital metering package. Toggle through the
phases to review individual phase amps, kW, and volts.
14.
To remove load, move MASTER LOAD switch to OFF position.
15.
Shutdown: Reverse steps 1 through 12. It is good procedure to allow the fan motor to
operate for about 5 minutes after the load is removed. This will exhaust any accumulated
heat and allow exhaust surfaces to cool. Although not required for maintaining Load
Bank integrity, the cooling procedure helps to prevent burn injuries.
*************************************************************
W A R N I N G
DO NOT touch the exhaust screen during operation. The screen
will become hot from the exhaust heat and may cause a serious
burn. (Refer to Section I, SAFETY CONSIDERATIONS, of this
manual.)
DO NOT allow objects to enter or block screens.
*************************************************************
NOTE
Lower voltages and different frequencies may be applied to the
load circuit of the Load Bank. Frequency change causes no
derating of the load. The Applied kW with a lower voltage is
computed using the following formula:
2
2
Rated
Applied
)
Rated
Voltage
(
)
Applied
Voltage
(
kW
kW
