Wuhan Wugao Electric Measurement Co., Ltd

WDJB-II Single Phase Relay Protection Tester

The WDJB-II single-phase relay protection tester is a new generation of verification device successfully developed by our company. 

The internal AC-DC voltage and current source of the instrument adopt the latest power supply technology, which makes the instrument reach the domestic advanced level in circuit design, device design, panel layout and internal structure design.The instrument has the advantages of perfect function, excellent material selection, clear test project data and simple operation, and is the preferred equipment of the power relay protection department.

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Product Details


Working conditions:

(1) working power supply: AC 220V + 10% 50Hz

(2) working environment: Temperature: -10℃~40℃

Humidity: ≤ 85%

(3) Air pressure: 86~106Kpa

Output power:

(1) AC voltage: 0~250V/3A

(2) AC current: 0~100A /12V



(3) DC voltage: 0~320V/3A

(4) DC current: 0~20A/25V

(5) Fixed value output: DC24V DC48V DC110V DC220V

Performance indicators:

(1) current, voltmeter: 41/2Position

(2) digital millisecond watch: 0~99.9999s


(1) measuring relay: start value and return coefficient of current and voltage relay can be measured.

(2) time relay: start value, return value and action time can be measured.

(3) Intermediate Relay: Measure the start value, return value, hold value and action time of various intermediate relays with start coils and hold coil.

(4) reccoincidence relay: Capacitive charging test, charging time, reccoincidence time and intermediate elements can be tested.

(5) differential relay: dc excitation test, brake characteristic test, volt ampere characteristic test can be performed.

(6) various other very see relays.




Whatsapp: +86 13657267902

Skype:  sallyliao2006

Wechat:sallyliao ( 13657267902)

Tel:+86 13657267902

Address:13 / F, Building 2, Hangang Science and Technology Industrial Park, Jintan Road, Wuhan, Hubei, China.