In addition to the routine panel meter readings, other electrical tests of interest to personnel
responsible for evaluating and maintaining ESPs include the air-load and gas-load V-I (voltage-
current) tests, which may be conducted on virtually all ESPs. Air-load and gas-load curves
are graphs of the voltage (kV) versus the current (mA) values obtained at a set condition (test
point). These curves are developed to evaluate ESP performance by comparing the graphs
from inlet field to outlet field and over periods in time. Deviation from the normal or previous
results can indicate that a problem exists.
responsible for evaluating and maintaining ESPs include the air-load and gas-load V-I (voltage-
current) tests, which may be conducted on virtually all ESPs. Air-load and gas-load curves
are graphs of the voltage (kV) versus the current (mA) values obtained at a set condition (test
point). These curves are developed to evaluate ESP performance by comparing the graphs
from inlet field to outlet field and over periods in time. Deviation from the normal or previous
results can indicate that a problem exists.
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