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td2550 calibration device for contactless electrostatic voltmeters


准确度为 0.05 级 / 0.1 级可选

直流高压输出:最大达 20 kv 


model td2550, composed of high voltage source, standard plate electrode, insulating support and adjustable space frame. applied to calibrate contactless electrostatic voltmeters, high voltage electrostatic voltmeters, high voltmeters, high voltage divider and high voltage probes.

this apparatus can output high stability dc voltage, and the optional accuracy classes are 0.02 and 0.05.

meet the requirements of jjf 1517-2015 jjg 1052-2009 calibration specification for contactless electrostatic voltmeters and jjg 494-2005 verification regulation of high voltage electrostatic voltmeters.


● the maximum dc high voltage is up to 20 kv with small ripple and high accuracy.

● the equipped space adjustment device with a digital display can easily adjust the space between the electrostatic voltmeters and the electrodes.

● the equipped voltage indicator will be flashing at different frequencies with the voltage increase to remind operators of safety.

● good electrical protection such as arc protection, short-circuit protection and overload protection.

● hd lcd touch screen with a 6 digits display, can display multiple electrical parameters.

● directly output voltage by the digital buttons, and there is a high voltage switch for protecting the safety of operators.

● easy to build automatic detection system with the built-in rs-232 interface.

electrical specifications

high voltage


output characteristics

● output range of voltage: 500 v to 20 kv

● resolution: 0.002 % of range

● display: 6 digits

● load effect: the accuracy change from no-load to full-load is less than ±0.01 % of range.

● protection: arc protection, short-circuit protection and overload protection

mechanical structure

● dimensions of standard plate electrode: 500 mm × 500 mm × 2 mm (w × h × t)

● space adjustment device: move in front, back, up and down directions. the front-back travel working is 70 mm and the up-down working travel is 30 mm with ±0.1 mm accuracy.

● frame width: the contactless electrostatic voltmeters with a width of 50 mm to 95 mm can be placed on the frame.

general specifications

● line power: 220 v ±22 v, 50 hz ±2 hz

● maximum power consumption: 200 va

● operating environment: 0 °c to +40 °c, 40 % to 75 % r·h, non-condensing

● storage environment: -20 °c to +70 °c, <95 % r·h, non-condensing

● dimensions (w × h × d): 2020 mm × 1510 mm × 800 mm

● communication: rs-232 interface

selection guide


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