Partial Discharge Detecting Tester , PD Detecting Instrument , Impulse Current Method PD Tester

1.Product introduction:

Due to manufacturing or installation defects, discharge occurs in the insulated portion of the live cable end (joint) until insulation breakdown damage occurs, and even a fire or explosion at uncertain defects may occur. Therefore, how to find the hidden troubles before the accident is the key to solve the problem, which makes the discharge detection necessary for power equipments.

The model JF2002 is a kind of impulse current method partial discharge inspection instrument It has the feature of small volume, excellent performance and easy operation.

II.Main Components:

III. Detecting principle figure

Note : The PD free test transformer set (power frequency voltage withstand test set) rises the target testing voltage to tested object (such as power transformer ,CB, bushing, CT,PT ,discloser and so on )which PD detecting needed , the coupling terminals of voltage divider will has some PD coupling signal to the PD detecting tester JF 2002, then get the PD level from the tested object.

VI. Technical Parameters of PD tester JF2002

1.Keywords: time base frequency ,Display, Change with measurement fuctions

• Time base frequecny: 50,100,150,200,400Hz power supply : 50HZ 220V
• Display: Ellipse---Expand---Beeline
• Change with measurement fuctions

2.Integrated design, covering 10kHz~300kHz, Meet IEC60270 standard.

3.Capacitance range of measured object: 6pF~250uF

Measuring sensitivity and Max. Current as the table

4.Time base of ellipse scan:

• Frequency 50/60(inner), 100,150,200,400Hz
• Turn:30°per grade, total 360°
• Display ways:Ellipse---Expand---Beeline
• The high frequency time base ellipse can be adjusted to normal state by input voltage (10~250V), and the power is less than 1VA. Auto-protecting function when overload

5.Displaying Unit:

A reactangle oscillograph tube(124×104mm²), which has brightness and focus knobs

6.Amplifier :

• On low frequency 3dB, f_L: 10,20,40kHz optional
• On high frequecny 3dB, f_H: 80,200,300kHz optional
• Gain adjusting: 6 grades of gross adjustment. Gain difference between grades is 20+ 1dB,fine adjusting range ＞20dB
• Asymmetry of plus and minus pulse responding ＜1dB

7.Time window

• Adjustable window width,15°~150°on 50/60Hz
• Rotatable window position, 0°~170°
• Two windows can on/off respectively or simultaneously
• Bombarding device, 20mS time to taking pictures

8.Pulse peak meter

• Pointer meter with linear scale, 0~100 deviation + 5%(with full scale)
• Pointer meter with logarithm scale, 0~10~100 deviation + 5%(with full scale)
• Pointer meter with 3.5bits LED digital display, 0~100 deviation + 3%(with full scale)

9.Measuring voltmeter

• Measuring range :100KV(with 100KV voltmeter resistance R)
• Display :3.5bits LED digital , deviation + 3%

10.Zero mark system

• Made by inner zero mark generator, it can change polarity and rotate 0~180°,so it can correspond with the true zero mark, which is made by high voltage resistor.
• The zero mark is corresponded with all ellipse scan frequecny.

11. Dimension : 530×550×220mm weight :22kg

VII. Optional model

• Model JF 2002 : PD test channel one channels
• Model JF 2003 : PD test channel three channels
• Model JF 2004 : PD test channel four channels

VIII. Optional matched other test set

• PD detecting AC high voltage generating systems : CQSB series PD free power frequency test transformer systems
• PD signal coupling unit : Coupling voltage divider or standard coupling capacitor , no corona type

Founded in 2003, FANKE is the domestic leader specializing in designing and manufacturing HV test, measurement and overhaul equipments. In 2003, Wuhan HIGHVOLT Co.,Ltd is established as our subsidiary. We provide a diversity of complete testing solutions and one-stop service for electric power companies, electric research institutions and electric equipments manufacture companies.
Located in Guannan Science and Technology Industrial park-- the Optical Valley of China, we cover an area of 12,000 square meters used for workshop and offices.With the registered capital of 16,000,000 yuan, our annual sales volume reaches 70,000,000 yuan. As a sub-measurement unit of Wuhan city, we develop us as a comprehensive high-tech enterprise integrating research, development, production, installation, commission, sales and service consultancy.

Good networking keeps us stay advantageous and innovative in the market. Relied on the wide cooperation with institutions of higher learning in Wuhan, we establish a HV research center supported by professional HV engineers and specialists from Wuhan High Voltage Research Institute of State Grid, Institute of Water Conservancy and Hydroelectric Power of Huazhong University of Science &Technology and Wuhan University.

Our management team is composed of professional administrators with rich experience in modern business and project management and technical personnel specializing in HV, power transmission, transformation and automation. Until now, we employ 75 stable workers, 65% of whom have bachelor degree and some of the rest are advanced engineers and professional experts with Doctor degree.

We hold numerous intellectual property rights, utility model and invention patents for products, such as hydraulic integrated high voltage withstand test system, series resonant test trail, ultra high voltage AC/DC voltage withstand test equipment, power frequency PD free voltage withstand test equipment and other electric power maintenance equipments as well as other tailor-made products.
Our products have been applied for onsite handover, preventive maintenance and quality inspection test. We have customers all around the country, including stated-owned institutions and large-scaled enterprises in sections of railway, oil industry and chemical engineering. Some products have been exported to overseas markets, including USA, Mid-east, Korea, India and Vietnam, ect.

With a vision to win-win result, We will continue to focus on customer needs and rely on technical innovation, striving to become the top-ranking provider for electric testing and measurement equipments and EPC engineering service.