User Manual
AMETEK Programmable Power
BPS Series
124
Connect the load to the output. Use the 1 mOhm current shunt in series with the load to measure the AC
and DC load current. When programming a DC load always program the output voltage to 0 volts before
changing the output load. This will prevent load switch contacts from being damaged.
To calibrate all measurement functions, the desired value for the measurement value of current or voltage
must be entered for the corresponding calibration value. Make the indicated adjustments by typing in the
desired display value. This should be the value indicated by the external DVM. If a 1 mOhm current
shunt is used for current, 300 mV represents 300 amps.
The Calibration Load Table shows required load bank settings for the current measurement calibration
procedure. The following text is a detailed explanation of the procedure.
Note that the voltage measurement calibration is only required on the high voltage range. The same
voltage measurement calibration coefficients are used on both voltage ranges.
Note that the current measurement calibration is only required on the low voltage range – maximum
available current range. The same current measurement calibration coefficients are used on both voltage
ranges (if available). Suggested load values are shown for either voltage range in case the BPS is only
used in a single voltage range.
PARAMETER
BPS POWER SYSTEM
Model --->
Lowest Range
BPS45-3 BPS90-3 BPS180-3
150 VAC
AC Current Full Scale
1.0
, 15KW
0.5
, 30KW
0.25
, 60KW
300 VAC
AC Current Full Scale
4.0
, 15KW
2.0
, 30KW
1.0
, 60KW
Table 7-1: Sample BPS45/90/180 Calibration Load Resistance and Power Values
