Model Number Description DC Switchboard Meters AC Switchboard Meters - Iron Vane & Rectifier types Wattmeter's Synchroscopes	Power-Factor Meters Temperature Indicators Frequency Meters Voltmeters Standard Features General Specifications Options

Power-Factor Meters

The A&M Model 4951 power factor meters are designed to meet the requirements of MIL-M-19261 and MIL-M-16034. They are supplied as either self-contained or as a “matched set” with external transducer. In the external transducer configuration the transducer is matched to the meter. Both configurations are sealed watertight.

SPECIFICATIONS

Potential Input
Voltage ·······················	85-135VAC Single Phase
Burden ························	5VA
Overload ·····················	150VAC Max.
Current Input
Current ·······················	0.001 to 5AAC Single Phase
Burden ························	1VA
Overload ·····················	15AAC Max.
Accuracy
	±0.025 @ 0.5PF \| ±0.007 @ 1.0PF
Frequency
	60 Hz (Shorted Frequency Terminals, as shipped)
	50 Hz (Open Frequency Terminals)
Temperature
Operating·····················	-20°C to +65°C
Storage························	-65°C to +100°C
Dielectric Test
	1500 VRMS
Transducer Input
	-0.5mADC to +0.5mADC (Transducer Matched to Meter)

(model 568)	Click for Image (model 727)	Configurations	Model Number
		Meter with External Transducer Matched to Meter	4951-568
		Self contained	4951-727