Energomonitor-3.3T1-C

Multifunctional Reference Standard

NATIONAL REGISTRY N: 39952-08

Calibration interval 2 years

Аccuracy class: from 0.1

Purpose

The Energomonitor-3.1KM reference meter is intended for accuracy testing, calibration and verification of reference standard meters, working standard meters and other instruments for electrical energy measurements, including:

Measurement and logging (including waveform capturing) of critical electrical parameters in single-/ and three-phase networks, including RMS voltage and current for both sinusoidal and distorted waveforms, as well as active, reactive, and apparent power
on-site performance, accuracy and calibration tests of single / and three-phase electric energy meters (active or reactive energy); control of correct meter wiring (without breaking into the circuits)
On-site performance, accuracy and calibration tests of current and voltage instrument transformers (as a comparator)
Inspection of secondary circuits of instrument transformers (load power measurements), e.g. within automatic metering and billing systems
Amplitude and peak AC voltage measurements (up to 500 Hz) across one/three channels and one differential channel; accuracy testing and calibration of peak voltmeters

Basic specifications:

Operating temperature range: -20...50°C
Weight: 2 kg

NOTE! We offer various training programs for users of Mars-Energo instruments and software.

Accuracy specifications

Measured parameters	Measuring range	Intrinsic measurement error
Measured parameters	Measuring range	Accuracy class 0.1	Accuracy class 0.5
AC voltage	0,6 to 360 V (U_nom = 60, 120, 240, V)	±0,01%	±0,01%
AC current	1 mА to 3500 А	±0,01 % I_nom =0,1; 1; 0,5; 5; 10; 50	±0,5..2,0 % I_nom =10; 100; 300; 1000; 3000
Phase angle between fundamental harmonics of phase voltages or between fundamental harmonics of current and voltage in the same phase	0° to 360°	Absolute
	0° to 360°	±0,1°	±0,5°
Apparent power, VA	0,1U_nom to 1,2U_nom 0,1I_nom ≤ I < 1,2I_nom	Relative:
Apparent power, VA	0,1U_nom to 1,2U_nom 0,1I_nom ≤ I < 1,2I_nom	±0,2 %	±2,0 %
Active power, W		Relative:
Active power, W		±0,1 %	±0,5 %
Reactive power, Var	0,01Q_nom to 1,44Q_nom	Relative:
	0,9 ≤ \|sin φ\| ≤ 1,0	±3,0 %	±1,0 %
	0,2 ≤ \|sin φ\| ≤ 0,9	±5,0 %	±1,0 %
AC frequency, Hz	45 to 75 Hz	Absolute:
AC frequency, Hz	45 to 75 Hz	±0,01	±0,01