The ratio group tester calibration device is a standard calibration instrument designed specifically for the calibration of transformer and transformer ratio group testers. It is a standard device specially developed for the calibration requirements of digital ratio group testers.
The instrument can complete the ratio verification work at 200V voltage. Seven decimal adjustment dials can realize the setting of any ratio value. The three adjustment dials can realize the setting of D/d, D/y, D/z, Y/d, Y/y, Y/z, and connection group. The equipment adopts passive voltage ratio standard instrument, which is connected by three groups of single-phase ratio standards through switch combination. The equipment is simple to operate, reliable in performance, and strong in anti-interference ability.
1: General technical indicators of the whole machine
① Voltage ratio value accuracy level: 0.01 level
② Input voltage range: 0V~240V
③ Output voltage ratio range: 1.000000~10000
④ Output group ratio range: 10, 100, 1000, (in Y/y, D/d group)
Ratio range: 10√3, 100√3, 1000√3, (in Y/d group)
Ratio range: 10/√3, 100/√3, 1000/√3, (in D/y group)
Transformation ratio range: 10*√3, 100/√3, 1000/√3, (in Y/Z group)
Transformation ratio range: 10/3, 100/3, 1000/3, (in D/Z group)
⑤Output group ratio accuracy: 0.05%
⑥Connection group setting range: D/y, D/d, D/z, Y/y, Y/d, Y/z,
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