Insulation Resistance Meter Calibration Device

Product Introduction

This megohmmeter calibration device complies with the calibration requirements specified in JJG1005-2019 "Calibration Procedure for Electronic Insulation Resistance Meters" and JJG622-1997 "Verification Regulations for Insulation Resistance Meters (Megohmmeters)", and designed and manufactured with reference to relevant content in the power industry standard DL/T845.1-2004 "General Technical Conditions for Electronic Insulation Resistance Meters". It is used to verify the indication error and drop voltage (Ud) of electronic insulation resistance meters. When used in conjunction with our company's Constant Speed Generator (Model CY3), it can verify the indication error, open-circuit voltage (Uk), mid-value voltage (Uz), and peak voltage (Uf) of pointer-type megohmmeters. Featuring a compact structure, stable performance, and user-friendly operation, it serves as an ideal device for industrial plants, mines, enterprises, and institutions to calibrate various types of insulation resistance meters.

Product Parameter (specification)

△ This device is mainly used to calibrate various insulation resistance meters with a rated voltage ≤10kV. It can also be used as a standard instrument in the production and repair of insulation resistance meters. The resistor section can be used independently. The digital section can measure DC voltages up to 10000V.

The main technical specifications of this calibration device are as follows:

Standard Numeric Table

1. Measurement range: 0～10000V

2. Basic error:

DC voltage U

≤1000V: ±(0.4% of reading + 0.1% of full scale)

>1000V: ±(0.5% of reading + 0.5% of full scale)

Peak voltage (Uf)

≤1000V: ±(1% of reading + 0.5% of full scale)

>1000V: ±(0.5% of reading + 0.5% of full scale)

3. The response time of the digital meter is approximately 25 seconds.

△(ii) Standard Resistors

1. A standard resistor consists of a series of 900G fixed resistors and nine resistance discs, i.e.:

100GΩ+2×200GΩ+400GΩ+9×(104+103+102)MΩ+10(10+1+0.1+0.01

+0.001+0.0001) MΩ, resistance range: 0～1000011.1110 MΩ, minimum step 100Ω, maximum withstand voltage 10kV.

2. The grade index and maximum operating voltage or current of each decimal disk.

Decimal disk resistance

Fixed resistor

×10000

MΩ

×1000

MΩ

×100

MΩ

×10

MΩ

×1

MΩ

×0.1

MΩ

×10

kΩ

×1

kΩ

×0.1

kΩ

grade

index

0.2

Maximum operating voltage and current

10kV

2500V

1500V

500V

8 mA

20 mA

50 mA

3. The residual resistance value is less than 1Ω, and the variation is no more than 0.1Ω.

4. Environmental reference conditions: 20 ± 2 - 3 ℃, relative humidity: 50% ± 10%.

5. Nominal operating environment: Temperature 23±5℃, relative humidity: 25%～60%.

6. Insulation resistance of the circuit to the casing: ≥1×10¹¹Ω.

7. Power supply voltage: AC220V 50HZ.

8. External dimensions: 600mm×323mm×220mm.

9. Weight: Approximately 10kg.

Product feature and application

Wide Compliance Adaptability:

Complies with multiple verification regulations and industry standards, capable of verifying various insulation resistance meters ≤10kV. Compatible with electronic and pointer-type meters (requires CY3 constant speed device), and can also serve as a production and repair standard instrument.

Precision and Stability:

Digital meter measures 0–10000V DC voltage with controllable accuracy; Resistor range: 0–1000011.1110 MΩ, 100Ω increments, with low residual resistance and minimal variation.

Convenient and User-Friendly:

Compact design (600mm×323mm×220mm, approx. 10kg), clear panel layout, backlit LCD, simple switch operation, and resistor usable independently.

Safety and practicality:

Excellent insulation performance, automatic voltage range switching, discharge function, clear voltage/current limits ensure safety.

Strong environmental adaptability:

Operates in 23±5℃, 25%–60% humidity environments; high-humidity conditions can be accommodated with dehumidification equipment.

Prodection details

1. Calibration of various insulation resistance testers ≤10kV for industrial plants, mines, enterprises, and institutions;

2. Use of standard equipment in the production and repair of insulation resistance testers;

3. Independent use of resistors or digital meters (measuring DC voltages up to 10,000V).

Company Qualifications

FAQ

1)Can the MEJZ-W10A Megohmmeter Calibration Device calibrate both electronic and analog megohmmeters simultaneously?

Answer: Yes. This device can directly calibrate the indication error and drop voltage (Ud) of electronic insulation resistance meters. When used with our CY3 constant speed generator, it can calibrate the indication error, open-circuit voltage (Uk), mid-value voltage (Uz), and peak voltage (Uf) of analog megohmmeters.

2)What are the features of the standard digital display on the MEJZ-W10A megohmmeter calibration device?

Answer: The standard digital display features a green-backlit LCD screen, ensuring clear readability under varying lighting conditions and adapting to diverse usage scenarios.

3)What preparations are required before using the MEJZ-W10A megohmmeter calibration device after prolonged disuse?

Answer: Before use, rotate each switch of the standard resistor several times between positions 0 and 10(9) to ensure stable and reliable switch contact. This guarantees a smooth calibration process and accurate results.

Hot Tags: insulation resistance meter calibration device, China insulation resistance meter calibration device manufacturers, factory, Ground Continuity Tester , insulation and earth resistance tester, Insulation Resistance Meter Calibration Device, Large scale Grounding Grid Resistance Tester, Low resistance tester, Soil Resistivity Ground Resistance Tester