Partial Discharge (PD) Test System

• After-sales Service: Life Time Maintenance
• Warranty: One Year
• Transport Package: Aluminum Box Inside and Plywood Case Outside
• Specification: CE Mark
• Trademark: GOLDSOL
• Origin: China
• Model NO.: YDQW-5kVA/50KV
• HS Code: 90303900
• Production Capacity: 50 Sets/Month

Product Description

I. Application:
This equipment is mainly used under ≤ 50KV test voltage for power products such as transformers, power transformers, high voltage circuit breakers, cables accessories, products for power frequency voltage withstand test and partial discharge test and research pilot.

II. Working Conditions:
Altitude: ≤ 2500m
Temperature: -15ºC ~ +45ºC
Relative humidity: ≤90%RH

III. Standard
JB/T9641-1999  .........…Test Transformer
GB/T.311.1-1997  ......…Insulated high-voltage transmission and distribution equipment and cooperation
GB/T 16927.1-1997  ......…HV Test TechnologyCharter 1
GB/T 16927.2-1997.........HV Test TechnologyCharter 2
GB7328-87............…Transformer and reactor sound levels measured
GB/7354-2003 .........…PD Test
GB/T509-1991 .........…Power Transformer Test Rule
GB2536-1990............Transformer Oil
GB7252-87............…Transformer oil dissolved gas analysis and assessment guidelines
JB8749-1998............General requirements for voltage regulator

IV. Equipment components
 

Sr no	Name of Commodity	Model number	Qty  (unit)
1	PD Test Transformer	YDQW-5KVA/50KV	1
2	PD Test Control unit	5kVA/200V	1
3	Power Isolation Filter	5kVA/220V	1
4	PD Coupling Capacitor	50kV/200pF	1
5	Current Limit Resistor	50kV/5K	1
6	PD Analyzer	HSJFD-3A	1
7	Calibrator	JZF-9 or JZF-10	1
8	Input unit	3#	1

            


PD Test Transformer  10KVA /50KV/200V
1. Rated capacity: 5kVA
2. Output voltage:0- 50kV
3. Input voltage: 200V ±10%
4. PD Volume under rated voltage ≤ 5PC
5..Output Current: 100mA
6. Phase: Single Phase
7. Voltage accuracy: AC 1.5%

8.Power supply distortion: <3%   

9. Dielectric medium: SF6
10.Size: Ф320*800mm
11. Weight: 45kgs

Control unit,  5KVA/200V
Functon:
1.Zero position function,digital voltage/current display.
2.Time Ralay control alarming warning; alarm with light
3.Over-current/voltage protection, breakdown protection.
4.Continuous adjusting voltage, without waveform distortion.
5. Voltage return to zero when testing is over.

Parameters:

1.Rated capacitance: 5kva

2.Input voltage:220V±10%

3.Output current: 22.7A

4.Output voltage: 0-250V

5.Size: 400*350*350mm
6.Weight:24kgs

Power Isolation Filter,  5kVA/220V

1.Input Voltage:220V±10%

2.Output voltage:220V±10%

3. Rated Capacitance:5KVA
4. Resistance voltage: ≤5%
5.Unload loss: ≤5%
5. Reduction Character:10KHz~100KHz ≥20dB; 100KHz~30MKHz ≥60dB
6. PD level:Q≤ 5PC under rated voltage
7. Size:350 × 350 × 420mm
8. Weight:30Kg

PD Coupling Capacitor  50kV/200pF

1.Capacitance: 200pF

2.PD Volume:≤ 5PC
3.Coupling Capacity: 50KV
4.Equipotential shielding: 1 unit
4.Size: Height 800mm, Ф80mm
5.Weight: 23kgs

Current Limit Resistor, 50kV/5K

1.Creepage:>50KV

2.Height: 300mm, Ф60mm
3.Weight: 2.5kgs

PD Analyzer,  HSJFD-3A
HSJFD-3A partial discharge detector is a new type of digital partial discharge detector developed by our company. It retains the advantages of HSJFD-3A partial discharge detector, reduces the volume and optimizes the performance. It uses 10.1 inch touch screen to replace the traditional operation mode of oscillograph and physical knob, making it more convenient to use.
The instrument adopts full touch screen operation, which not only improves the service life of the operation, but also has the following functions: one key automatic correction; high voltage test voltage divider ratio can be set; serial communication upload test data. The instrument has the characteristics of high sensitivity, wide application range, wide dynamic range of amplification system, multiple frequency band combinations (nine kinds), and strong anti-interference ability. It is a practical partial discharge testing instrument widely used by electric power departments, manufacturers and scientific research institutes.


Main Technical Indicators for PD tester:
1. The equivalent capacitance ranges from 6pF to 250 μ F
2. Number of channels: single channel
3. Measurement range: 0.1pc-10000nc
4. Detection sensitivity and allowable current (see Table 1)

NO.	Tuning Capacitance Range	Sensitivity (PC) (Unbalanced Circuit)	Effective Value Of Allowable Current
			Unbalanced 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	0.006~0.025~0.1μF	0.3	1A	8A
7	0.025~0.1~0.4μF	0.5	2A	15A
8	0.1~0.4~1.5μF	1	4A	30A
9	0.4~1.5~6.0μF	1.5	8A	60A
10	1.5~6.0~25μF	2.5	15A	120A
11	6.0~25~60μF	5	25A	200A
12	25~60~250μF	10	50A	300A
7R	Resistance	0.5	2A	15A

Table:Detection sensitivity and allowable current value of input unit

5. Elliptic scan time base
(1) Frequency 50/60, 100, 150, 200, 400Hz
(2) Rotation: 30 ° as the first gear, and can rotate 120 °
(3) Working method: ellipse sine wave straight line

6. Display unit
10.1 inch capacitive touch screen is used.

7. Amplifier
(1) 3dB low frequency fl:10, 20, 40KHz optional
(2) 3dB high frequency fh:80, 200, 300kHz optional
(3) Gain adjustment, rough adjustment 6, inter gear gain difference 20 ± 1dB,
fine adjustment range >20db
(4) Asymmetry of positive and negative pulse response < 1dB

8. Time window
(1) Window width: adjustable, 5 ° ~ 170 ° at 50Hz
(2) Window position: each window can rotate 0 ° ~ 170 °
(3) Two time windows can be opened separately or simultaneously.

9. Peak pulse display
The touch screen displays 1 decimal place (10pc or more), 2 decimal places (less than 10pc),
error: ± 3% (in full scale)

10. Test voltage display
(1) Range 150kV
(2) Input impedance: >1m Ω
(3) Display: touch screen display, display 1 decimal place
(4) Error: ± 1% 

11. Test frequency display
Error: less than ± 1%

12. Zero standard system
Zero sign is consistent with all ellipse scanning frequencies

13. Structure
(1) Dimensions: 370mm (width), 460mm (depth), 215mm (height)
(2) Weight: about 12.5kg

Calibrator
1. Output charge position: 5 PC, 50PC, 500PC
2. Polarity: positive and negative alternation
3. Repetition frequency: 1.2KHz
4. Frequency range:  >±100Hz
5. Pulse rise time: <100ns
6. Pulse fall time: >100us
7. Injection capacitance: 10PF, 100PF
8. Capacitance error: Ec ≤ ±4%
9. Square wave voltage amplitude error: Eu ≤ ±4% (50PC position)
10. Correction charge error: Eq=(Eu2+Ec2)1/2  ≤±5%
11. Battery: 6F22 9V
12.Size: 160 x 125 x 50mm3
13.Weight: 0.5kg


V. Connection sketch
  



VI. Transport size and weight

Sr no	Desscription	Qty		NW  (KG)	GW  (KG)	Dimension     (CM)
		Unit	Package
1	YDQW-5KVA/50KV PD CONTROL UNIT	1	1	@24 kgs	@36 kgs	@47*37*38cm
2	YDQW-5KVA/50KV PD TEST TRAMSFORMER	1	1	@45kgs	@65 kgs	@40*45*97cm
3	YDQW-5KVA POWER ISOLATION FILTER	1	1	@30kgs	@55 kgs	@45*45*55cm
4	YDQW-50KV/200pF PD COUPLING CAPACITOR	1	1	@25kgs	@43 kgs	@98*38*42cm
5	HSJFD-3A PARTIAL DISCHARGE TESTER	1	1	@22kgs	@38 kgs	@60*62*40cm
Total		5 Wooden cases		146 kgs	237 kgs	0.66 m^3
Note: Real for the final.