GDZX79D+ Standard Resistance Box Megohmmeters Calibrator

• After-sales Service: Yes
• Warranty: 1 year
• Transport Package: Plywood Case
• Specification: ISO
• Trademark: HV HIPOT
• Origin: Wuhan, China
• Model NO.: GDZX79D+

Product Description

GDZX79D+  Standard Resistance Box

I. General information

GDZX79D+ Standard Resistance Box is mainly used to verify various megohmmeters with a rated voltage of 5000V and re-pointing the dial during the production or repair of various insulation resistance meters. It is also suitable for verification of insulation high resistance meters and can be used in other circuits as a standard high resistance box.




II. Features
 

1. All metal film resistors are produced by joint ventures. Those resistors have the characteristics of low voltage coefficient, small temperature coefficient, and good stability.

 

1. Adopts the latest designed high voltage resistance and high Insulated light transfer switch, the instrument has the characteristics of clear file change and convenient use.

 

1. This resistance box adopts high insulation material and light pressure structure, so it has the advantages of small contact pressure, long life, small contact resistance deterioration, and high insulation resistance.

 

1. With a metal shell, it has good electrostatic shielding.

III. Specifications

 

1. Adjustment range: 0-121111.110MΩ, mini step is 100Ω.
2. Max. working voltage/current (referential voltage/current) and a class of every decimal electrical resistance panel are shown below:

Resistance(MΩ)	×10000	×1000	×100	×10	×1	×0.1	×0.01	×0.001	×0.001
Class(%)	5	2	1	0.2
Max. Voltage /current	5kV			2.5kV		500V	8mA	20mA	50mA

 

1. When the maximum working voltage or current is changed to 1/5 of the maximum use voltage or current, the variation of resistance due to the change of voltage or current should not be greater than a corresponding grade index.
2. Referential ambient temperature is 23ºC, relative humidity 40%~60%; nominal operation temperature is 23±5ºC, relative humidity 25%~75%
3. The insulation resistance between line and the enclosure≥1×10¹²Ω
4. The withstand voltage (AC sine wave, 50Hz) between the line and the enclosure is 8000V for 1 minute.
5. Dimension: 490*249*171mm
6. Weight: <15kg