Energomonitor 61850 | Reference transformer of reference instrument

Energomonitor-61850

Reference instrument for digital substations

National registry No 73445-18

Multifunctional reference instrument designed for accuracy testing (verification or calibration) of conventional (analogue) energy meters, conventional (analogue) instrument current and voltage transformers (CTs/VTs), digital current and voltage transformers with IEC 61850-9-2 outputs, and merging unit. EM61850 can also work as a comparator of Sampled Values streams.

Accuracy classes: 0.02, 0.05

Purpose

	Conversion of AC current and voltage signals into IEC 61850-9-2 compliant data streams of instantaneous values
	Determination of ratio, phase and composite errors of scaling voltage or current converters (transformers) with analogue outputs or digital outputs according to IEC 61850-9-2
	Determination of accuracy characteristics of Stand-Alone Merging Units (IEC 61869-13)
	Active and reactive power/energy measurements
	AC current and voltage measurements

Application

Verification (accuracy check or determination of ratio and phase errors) and calibration of:

	Instrument current and voltage transformers and merging units with IEC 61850-9-2 outputs
	Conventional instrument current (CTs) and voltage (VTs) transformers
	Single- and three-phase wattmeters, measuring converters of power, multifunctional active and reactive energy meters
	Voltmeters, ampere meters, measuring converters of voltage and current, phase meters, and frequency meters operating in the commercial frequency range

Test Set MarsTest-61850

The MarsTest-61850 is a test set intended for verification and calibration of digital substation equipment that consists of the Energomonitor-61850 reference instrument, MarsGen-61850 digital stream calibrator and Energoforma-61850 test signal source.

Measured parameter	Measurement range	Intrinsic measurement error
Measured parameter	Measurement range	Accuracy cl. 0.02	Accuracy cl. 0.05
AC voltage	0.1 to 960 V (Unom = 1, 2, 5, 10, 30, 60, 120, 240, 480, 800 V)	±0.01 %	±0.02 %
AC current	1 mA to 120 A (Inom = 0.05, 0.1, 0.25, 0.5, 1, 2.5, 5, 10, 25, 50, 100 A)	±0.01 %	±0.02 %
Phase angle between fundamental harmonics of phase voltages and phase angle between voltage and current in the same phase	0° to 360°	Absolute:
	0° to 360°	±0.003°	±0.01°
Apparent power (VA)	0.1Unom to 1.2Unom V 0.1Inom to 1.2Inom A	Relative:
Apparent power (VA)	0.1Unom to 1.2Unom V 0.1Inom to 1.2Inom A	0.02 %	0.04 %
Active power (W)	0.1Unom to 1.2Unom V 0.1Inom to 1.2Inom A	Relative:
Active power (W)	0.1Unom to 1.2Unom V 0.1Inom to 1.2Inom A	±0.01 %	±0.05 %
Reactive power (Var)	0.1Unom to 1.2Unom V 0.1Inom to 1.2Inom A	Relative:
	0,9 ≤ \|sin φ\| ≤ 1,0	±0.03 %	±0.1 %
	0,2 ≤ \|sin φ\| ≤ 0,9	±0.05 %	±0.1 %
AC Frequency	40 to 70 Hz	Absolute:
AC Frequency	40 to 70 Hz	±0.0002 Hz	±0.001 Hz

Measurement error as applied to verification of transformers (absolute)
Ratio	Phase
Analogue current and voltage transformers
±0.002 %	±0.1 minute
Digital transformers (IEC 61580)
±0.015 %	±1 minute
When comparing Sampled Values (SV)
±0.003 %	±0.1 minute

General specifications

Mains power supply

198 ... 242 V
47 ... 63 Hz

AC power consumption

100 VA, or less

Operating temperature range

+5 to +40 °C

PC software

EnergoMonitor-61850EXT

Features and benefits

	Calibration and verification of either analogue or digital voltage and current transformers
	Simultaneous testing of 3 single-phase or 1 three-phase VT or CT (either analogue or digital)
	Time synchronization according to PTPv2 available
	Devices under test can be synchronized from the Energomonitor-61850