Wattmeter D542 (D 542, D-542)
D542 portable single-phase wattmeter of the electrodynamic system is designed to measure the nominal power factor of 0.1 in AC circuits.
Wattmeter D542 are used at an ambient temperature of 10 to 35 ° C and a relative humidity of 80% (at 30 ° C).
In terms of resistance to mechanical influences D542 devices are common.
According to the degree of protection against external magnetic influences unit D542 belongs to the category II.
D542 accuracy class 0.5.
Power meter is manufactured in various versions for four nominal voltage and two nominal current.
Sosφ rated power factor of 0.1.
Nominal voltage power meter 30V, 75V, 150V, 300V.
Rated current of 5 mA in parallel circuit.
Rated frequency range 45-65g c.
Extended frequency range 65-400Hz.
Settling time moving part 4 seconds.
Unit Dimensions wattmeter D542 - 175h255h140 mm, weight 3.0 kg device.
The housing plastic.
The moving part of the device attached to the braces.
Indicating device - a light pointer. The length scale of the device is 125 mm.
The device is provided with a level of D542 to install the device in a horizontal operating position.