JFD-2010S Multi channel digital partial discharge detector

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1. Executive standards

The performance index of all components in the system are in accordance with the following standards regulations

GB/T16927.1-2011	High-voltage test techniques Part 1: General definitions and test requirements.
GB/T16927.2-2013	High-voltage test techniques Part 2:Measuring systems
GB/T7354-2003	Partial discharge measurements
DL/T 846.4-2004	General technical specifications for high voltage test equipment Part 4: Partial discharge detector
JB/T 7586-1994	Partial discharge detector in discharge calibrator

The other items meet the technical requirements, technical documents and technical agreements of the users.

2. Equipment name

Serial  number      name	Product name	Product model	Quantity	Comment
1	Multi-channel digital partial discharge detector	JFD-2010	1	System test host
1.1	Multi-channel digital partial discharge detection software	JFD-2010-S	1
2	Correcting pulse generator	JZF	1	Choose according to sample matching, multi match on model
3	Input unit		2	Choose according to sample matching, multi match on model
4	partial discharge filter adapter	PDLF-1	2
5	System accessories (cable length can be customized according to customer requirements)		1 set	Standard 8m discharge signal line, 2; adapter line, 2; high frequency line, 1; power line, 1 fuse 2
PS：According to the requirements, the calibration certificate of partial discharge tester and calibration pulse generator can be provided and the third party testing institution is national

3. Introduction of equipment

(1) JFD-2010S Multi channel digital partial discharge detector

This detector is suitable for partial discharge detection and online monitoring of transformers, mutual inductor, generators, arresters, bushings, GIS, capacitors, power cables, switches and other high voltage electrical equipment with various voltage levels and capacities.

Product structure:

1. Display: 15 inches true color TFT LCD display, industrial level brightness; display resolution: 1024 x 768; 4 digit display voltage value
2. External interfaces: USB interfaces; power supply interfaces; 2 signal input port; grounding terminal; external synchronous signal input terminal; RJ45 interface; RS232 interface
3. Size: long*wide*height（540×460×320）mm
4. Weight: 18kg

Main technical target:

1. Measurement channel: independent 2 channel (non channel conversion).
2. The capacitance range of the tested product: 6pF~250 F.
3. Detection sensitivity: 0.01pC.
4. Sampling accuracy: 12bit; sampling rate: 20M / S.
5. Display work method:
   Display method: ellipse—sine—line
   Trigger synchronization mode:

   internal and external trigger mode, internal trigger for instrument power synchronous trigger, 50Hz; external trigger for synchronous test power supply frequency, 50~400Hz arbitrary frequency.
6. Time window: the size of the phase is randomly selected. The time window can be dynamically enlarged and the two time windows can be opened at the same time or separately.
7. Filter band: 3dB low frequency fL has three stage: 10, 20 and 40 Hz; 3dB high frequency fH also has three stage: 80, 200 and 300 kHz. fL and fH can flexibly form all kinds of filter pass.
8. Signal amplifier
   
   Gain adjustment:

   Divided into coarse and fine gain. Coarse gain divided into 5 files, 20dB gain difference between grade (10 times), error ±1dB, gain tuning range of >20dB.
   Amplifier response to asymmetry of positive and negative polarity：<1dB。
9. Partial discharge signal measurement: can measure the partial discharge signal in continuous, magnifying way error ±5% (full scale meter)
10. With data storage, playback function, with printing function and can generate standard test report.
11. Working temperature: -10～45℃，relative humidity：≤95%.
12. power supply AC220V；frequency 50Hz；power 300W.

Description of product features：

• Independent four channel digital partial discharge measurement. Synchronous sampling, processing and display;
• Inside and outside Synchronous random selection, with zero mark indication and phase resolution function;
• Display mode：Randomly choose three display method: ellipse, straight line and sin;
• Waveform analysis of single discharge pulse in order to determine discharge characteristics;
• The test data and waveform can be saved at any time, and the test records which have been saved in the past can be re displayed and analyzed;
• Gain range: each channel is individually adjusted, and the waveform display can be adjusted at any time without affecting the measurement results;
• The special or random waveform can be captured and analyzed in a single way;
• Anti-static interference function can remove the phase fixed interference signal;
• Correlation filtering technology can effectively remove the random interference which is not synchronized with the power supply;
• The bandpass filter adopts analog and digital hybrid filtering technology and the bandwidth can be randomly assembled to effectively suppress all kinds of interference;
• Arbitrary phase window, single window, double window optional, 360 degrees arbitrary choice of free window;;
• It can monitor the test voltage while detecting partial discharge;
• The discharge measurement, time and waveform analysis of partial discharge pulse are carried out;
• 2D and 3D partial discharge spectra display;
• Storage and print partial discharge graph and data automatically, and generate test report automatically;

(2) Pulse correction generator

There are many choices for output discharge according to different pulse correction generator. Specific as follows:

Model	Selection of output discharge gear
JZF-10	5PC、10pC、20pC、50PC
JZF-9	5PC、10pC、50pC、500PC
JZF-9A	10pC、20pC、50PC、100PC
JZF-6	10pC、20pC、50PC、100pC、200pC、500PC、1nC 、2nC、5nC
JZF-6D	5pC、10pC、20PC、50pC、100pC、200PC、500PC、1nC

(3)Input unit

Order number	Tuning capacitance range	pC (imbalance circuit)	Permission RMS
			Imbalance circuit	Balance circuit
1	0～25～100pF	0.02	30mA	0.25A
2	25～100～400pF	0.04	50mA	0.5A
3	100～400～1500pF	0.06	120mA	1A
4	400～1500～6000pF	0.1	0.25A	2A
5	1500～6000～25000pF	0.2	0.5A	4A
6	0.006～0.025～0.1uF	0.3	1A	8A
7	0.025～0.1～0.4uF	0.5	2A	15A
8	0.1～0.4～1.5uF	1	4A	30A
9	0.4～1.5～6.0uF	1.5	8A	60A
10	1.5～6.0～25uF	2.5	15A	120A
11	6.0～25～60uF	5	25A	200A
12	25～60～250uF	10	50A	300A
13	Resistance (for cable)	0.5	2A	15A

(4) Partial discharge signal filter adapter

Model：PDLF-1

The adapter is connected between the input unit and the partial discharge detector, which is used to filter the high frequency interference components doped in the partial discharge signal. It can effectively improve the test result of field test and the signal to noise ratio of partial discharge. It is the best choose in field.

4. The service condition of complete set of equipment