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1. General Information
1.1 Description
The Series 800 Power and Energy Meter Calibrators are precision sources of low distortion
alternating voltage and current, providing voltages from 11 to 749 Volts RMS and currents from 0.011
to 50 Amperes at frequencies of 50, 60, or 400Hz. The separate voltage and current outputs of the
Calibrators may be connected respectively to the voltage and current input terminals of wattmeters
and watt-hour meters for calibration. The Series 800 Calibrators have a separate control for the
phase of the current with respect to the voltage, resulting in a power factor which can be varied from
minus zero lagging through unity to plus zero leading. Through the use of the deviation control it is
possible to measure wattmeter percent error directly and display it in decimal form.
The Series 800 Calibrators have unique controls which allow the user to set the meter
excitation voltage and volt-amperes value; the excitation current is automatically determined. Entry of
voltage, volt-ampere, frequency and power factor settings may be accomplished through front panel
controls or remotely by the IEEE-488 Interface. The Series 800 Calibrators also include a Fractional
Setting control to simplify testing of meters (primarily analog) with non decimal cardinal scale points.
1.2 Models and Options
1.2.1 Model 800A Wattmeter Calibrator
The Model 800A Power Calibrator is used for the calibration and testing of wattmeters and watt
transducers. The range of voltage available coupled with the high burden capability make it suitable
for a variety of different instruments.
1.2.2 Model 811A Power Energy Calibrator
The Model 811A Power/Energy Calibrator is used for the calibration of watt/energy meters and
transducers. It has special features for delivering and displaying precise amounts of energy.
1.2.3 Models 800AE and 811AE
The 800AE and 811AE offer 100 ppm accuracy of apparent power and energy for power
factors from unity to ± zero power factor.
Operation of the 800AE and 811AE is identical to that of the Models 800A and 811A. The
Models 800AE and 811AE, however, have an Enhanced Mode which is operable over the range of
80 to 129, 160 to 279 volts and 1.1 to 5.9 amperes and at all power factors. An LED indicator is
automatically illuminated when operating in the Enhanced Mode ranges. The 811AE Power and
Energy Calibrator is ideal for testing working watt-hour standards. The 800AE power calibrator finds
application in watt and VAR transducer testing and in low power factor applications, such as motor
and transformer loss measurement calibration.
Please note that when operating in the Enhanced Mode the Fractional Setting control and the %
Deviation function are inhibited.
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