Multifunctional Electrical Measuring Instrument Calibration Device

Multifunctional Electrical Measuring Instrument Calibration Device

MOEORW-WNY90 Multi-functional Electrical Measuring Instrument Calibration Device A high-precision power frequency testing tool, relying on DSP and high-speed analog-to-digital/digital-to-analog conversion technology, it is stable, reliable, and easy to operate. It is suitable for the verification and calibration of various instruments in power systems, including AC/DC meters and energy meters.

This device is in accordance with JJG124-2005 "Verification Procedures for Ammeters, Voltmeters, Power Meters and Resistance Meters", JJG 596-1999 JJG 307-2006 This multifunctional electrical measuring instrument calibration device was designed to meet specific requirements. The core technology of the meter in the device utilizes digital signals. Processor (DSP) and 16 A high-precision power frequency AC data acquisition unit composed of a high-speed analog-to-digital converter; the signal section of the source uses... DSP and 16 A high-speed digital-to-analog converter can be used to form a controllable sine wave and distorted wave signal source.

The device features high precision, stable and reliable operation, and convenient and flexible operation.

2.1 AC voltage range: 50V, 100V, 200V, 400V, 600V ; maximum output capacity : 20VA .

2.2 AC current range: 0.5A, 1A, 2.5A, 5A, 10A, 20A ; maximum output capacity : 20VA .

2.3 AC voltage and current adjustment range: 0–130 % FS​ Adjust the fineness to 5× 10⁻⁵ ;

2.4 The accuracy of AC voltage and current at power frequency is 0.05% . FS ;

2.5 Active power (50V～400V) accuracy 0.05 % FS ;

2.6 Reactive power (50V～400V) accuracy 0.1 % FS ;

2.7​ The phase accuracy of the current relative to the voltage of the same phase is 0.05 0 ;

2.8 Frequency adjustment range 45-65 Hz , adjustment fineness 0.001 Hz , accuracy of the set value 0.01 Hz ;

2.9 phases​ Adjustment range 0～359.99 0 , Adjust the fineness to 0.01 0 ;

Power factor adjustment range 0 ~ ±1, Adjust fineness to 0.0001 ; setpoint accuracy. 0.0005 ;

2.10 AC voltage and current output waveform distortion ≤ 0.3% ;

2.11 AC voltage, current, and power output stability ≤ 0.01% FS /60s ;

2. 12th harmonic 2～31 Next, amplitude 0–40% , phase detail of each harmonic 0.01 0 ·N (N) (harmonic number );

2.13 DC voltage range: 75 mV , 75V, 150V, 300V, 500V, 1000V; maximum output capacity . 20W ;

2.14 DC current range: 0.5A, 1A , 2.5A, 5A, 10A, 20A; maximum output capacity . 20W ;

2.15 DC voltage and current adjustment range 0-120% FS (1000V) range 0～105% FS ) , adjust fineness 5× 10⁻⁵ ;

2.16 DC voltage and current output stability ≤0.01% FS /60s (peak-to-peak value );

2.17 Accuracy of DC Voltage Setting Value 0.05% FS ;

2.18 Accuracy of DC current setting value 0.1% FS ;

2.19 DC​ 75 mV Output (load ≥ 5) Ω ) Accuracy 0.1% FS ;

2.20​ The overall error of the electricity meter measurement (50V～400V) is 0.05 %. (Pulse output: Three-phase rated value = 6 Hz ) ;

2.21​ single-phase power supply 220V±10 %, 50 Hz ± 5 %

2.22​ Operating ambient temperature 20 ° C ± 10 ° C , relative humidity ≤ 85% RH ;

2.23​ Volume and weight approximately 460×460×175 mm 3 , 20 kg (Deluxe chassis) 24 kg ).

3.1​ It can semi-automatically or manually test various power frequency meters (voltmeters, ammeters, wattmeters, frequency meters, power factor meters) in the power system. The basic errors of digital meters and phase meters, and the changes caused by factors such as voltage, current, waveform, and power factor.

3.2​ The power supply section can generate 2 to 31 The distortion of the subharmonic wave includes the number, order , amplitude, and phase of the harmonics relative to the fundamental wave. All can be programmed.

3.3​ The power amplifier operates in the 40 Hz to 1 kHz frequency band and exhibits good linearity. The current amplifier is a constant current source, and the voltage amplifier is a constant voltage source. Due to its light weight, this device is more suitable for on-site calibration.

3.4​ It has USB Interface. This device can be controlled by a computer via host computer software (optional ) to perform automatic or manual inspections, and to... The results are processed and managed.

3.5​ Equipped with a large-capacity non-volatile memory, it can store... 300 The original test data of the tested instruments are available for review and uploading.

3.6​ The electricity meter can be calibrated at the load point or a self-selected point.