AC Resonant Test System 4000kvA/800kV

 

 

Product description

HMCXZ AC Resonant Test System is suitable for 10KV, 35KV, 110KV, 220KV, 500KV polyhexene power cable AC withstand voltage test. It is suitable for the AC withstand voltage test of large-capacity equipment such as 60KV, 220KV, 500KV GIS, transformers, insulators, busbars, busbars, and hydroelectric generators.

HMCXZ AC Resonant Test System is mainly composed of variable frequency controller, excitation transformer, high voltage reactor, high voltage divider and so on. The frequency conversion controller is divided into two categories, 55KW and above are desktop type, and below 55KW is portable box type; it is composed of a controller and a filter. The main function of the variable frequency controller is to convert the 380V or 220V power frequency sine alternating current with fixed amplitude and frequency into a sine wave with adjustable amplitude and frequency. And provide power for the whole set of equipment. The function of the excitation transformer is to raise the output voltage of the variable frequency power supply to a suitable test voltage. The high voltage reactor L is an important part of the resonant circuit. When the power frequency is equal to 1/(2π√LCX), it will resonate in series with the tested product CX.

The AC Resonant Test System is to change the system inductance and test frequency to make circuit in resonant condition. Its electric circuit is shown in Fig.1. The adoption of variable frequency resonant technology reduces the capacity of power source and the weight of equipment, which facilitates on-site test.

 

Fig.1

 

Hot tag: series resonance test set,ac dielectric test system supplier,resonance hipot test device,cable withstand voltage test device manufacturer.

 

 

AC resonant test system main specificationÂ

● Rated output voltage: based on different test objects， max up to 1000kV.

● Output frequency: 20- 300Hz.

● Waveform: pure sine wave, THD<1.0%.

● Max. capacity: Max up to 20000kVA 

● Duty Cycle: Continuous working time 60 mins at full power output.

● Frequency adjustment sensitivity: 0.1Hz, instability<0.05%.

● Power Supply: 380/220V ± 15%/50Hz ± 5%.

 

 

Related product

High voltage resonant test system

High voltage resonant test system is used to make AC withstand voltage test for HV cable, GIS, Power transformer, Busbar, etc . Compared to power frequecy AC hipot tester , variable frequncy AC resonant test set can generate high voltage and big current in much samller size and lighter weight.

Resonant test set

Resonant test set can be divided into variable frequency resonant test system and inductive resonant test system. 

for the inductive resonant test system, the frequency is stable 50hz, it adjust the resonance through the inductance's changing. Inductive resonant test set is widely used in generators.

 

 

High voltage resonant test system

High voltage resonant test system is used to make AC withstand voltage test for HV cable, GIS, Power transformer, Busbar, etc . Compared to power frequecy AC hipot tester , variable frequncy AC resonant test set can generate high voltage and big current in much samller size and lighter weight.

 

 

High voltage resonant test system can be divided into variable frequency resonant test system and inductive series resonance withstand voltage test device .

Our model Frequency Series AC Resonant Test Set with partial discharge is the most popular model, the output voltage of such PD free Variable Frequency Test System could be up 1000kV, and the pD level could be controlled within 10pC at the rated 1000kV, under 80% voltage, the pD less than 5pC.

AC inductance resonance test system is also to conduct one kind of ac high voltage test for generator. Usually we also called it as variable resonant test system. This test equipment is widely used in the generator’s testing. It can control the output frequency at 50Hz through adjusting the reactance value!

Series Resonant AC Hipot Test System is one of the HV Withstand Test Equipment. They are widely used in the insulation test for the gis, cable, transformer ,generator,etc.

 

ApplicationÂ

 

 

Production cases

 

 

Reference date of equivalent capacitances of common testing object of AC resonant test system

 

C=εΑ/d ,ε---permittivity of medium，Α---electrode area，d---Electrode distance
Appendix 1. List of electricity capacity of several common subjects

 

Testing object	Capacitance
Power transformer 1-100MVA	1-6MVA：3000-10000pF
	10MVA：5000-12000 pF
	20MVA：7500-15000 pF
	60MVA：13000-20000 pF
	100MVA：15000 Pf-20000 pF
Â	300MVA：20000 Pf-30000 pF
CVT	3000-5000 pF
HV circuit breaker、CT、PT	100-1000 pF
Swichgear（common and SF6）	300-1000 pF
 high-pressure pipe	50-600 pF
Insulator	<100 pF
Insulation tool	10-100 pF
overhead conductor and bus(per meter)	8-10 pF

 

Appendix 2：35KV And 35kV below capacitance of cable

 

Cross-sectional area of the single conductor （mm²;）	18/20KV	6/6KV 6/10KV	8.7/10KV 8.7/15KV	26/35KV
	μF/KM	μF/KM	μF/KM	μF/KM
25	0.1163	0.1922	0.1567	0.0992
35	0.1251	0.2116	0.1725	0.1061
50	0.1362	0.2357	0.1917	0.1150
70	0.1508	0.2693	0.2167	0.1263
95	0.1643	0.2999	0.2400	0.1368
120	0.1760	0.3266	0.2603	0.1460
150	0.1893	0.3570	0.2834	0.1563
185	0.2026	0.3873	0.3123	0.1665
240	0.2207	0.4296	0.3439	0.1805
300	0.2387	0.4706	0.3755	0.1945
400	0.2648	0.5311	0.4213	0.2146
500	0.2876	0.5839	0.4613	0.2321
630	0.3151	0.6481	0.5099	0.2533

 

Appendix 3：110KV、220KV capacitance of cable

 

110KV		220KV
Cross-sectional area of the single conductor（mm²;）	Capacitance（μF/KM）	Cross-sectional area of the single conductor（mm²;）	Capacitance（μF/KM）
240	0.136	240	0.110
300	0.147	300	0.117
400	0.165	400	0.125
500	0.182	500	0.134
630	0.201	630	0.144
800	0.224	800	0.155
1000	0.265	1000	0.180
1200	0.282	1200	0.190
Â	Â	1400	0.198
Â	Â	1600	0.204
Â	Â	1800	0.212
Â	Â	2000	0.222

 

Attention

prevent fire or personal injury!

Use appropriate power cord: can only use this product special, and conform to the product specifications of the power cord.

Properly connect and disconnect: when tests conductors and charged terminal connections, not optional connect or disconnect test wires.

Product grounding: this product except through the power grounding wires grounding,shell grounding column must be grounded. In order to prevent the shock, grounding must be connected with the ground conductor. With this product in the input or output terminal connections and shall ensure the product before already correct grounded.

Note that all terminal's rated value: in order to prevent fire or shock, please note all the rated value and mark of the product. please read this product before operation instruction, in order to further understand the information about rated value.

Don't operate without instruments cover plat ,such as already unloaded plat or panel, please do not operate this product.

In a suspicious fault, not operation: such as suspect this product has damaged, please contact the company maintenance personnel for inspection, do not continue to operate.

 

FAQ

1.Can you provide the training for us?

Yes, we can provide free training for our client at our factory.

If you require the training on-site, we also can arrange accordingly.

We have 10 seasoned engineers who become our technical team, they flied many countries for client’s installation and commissioning!

2.What is your after-sale service

We have 10 seasoned technical engineer as the after-sale service team.it is lead by our duty manager. We promise that our engineer can give answers within 1 hour and deal with equipment failure within 24 hours in time.

3.What’s the warranty period ?

Our warranty period is one year .

The product can be replaced within 1 month, can be repaired for free charge  for one year and maintenance for lifetime.

What is more, our warranty can be extended only charged small warranty fee.

 

Company Profile

Wuhan Goldhome Hipot Electrical Co.,ltd is one of the earliest enterprises specially in develop, design and manufacture high-voltage testing equipments in China.  In 2016, merged with Wuhan Sangao Electric Co., Ltd. , realize advantageous complementarities and resources reorganization , develop into a joint-stock enterprise.Closely cooperated with the professors from State Grid Power Science Research Institute, Electrical Engineering Colleage of Wuhan University (formerly Wuhan University of Water Resources and Electric Power) and other scientific research institutions . Now it has become a high-tech enterprise integrating R&D, production, marketing and installation.

Goldhome Hipot will always stick to the leading science and technology, quality first,  heart-to-heart business and win-win cooperation!

Wuhan Goldhome is a Electrical manufacturing enterprise integrating design, development, manufacturing and marketing in China. If you are looking for Resonant Test System ,Hv Resonant Test System and AC Resonant Test System manufacturers and factory, please feel free to contact us for the price of the High Voltage Ac Resonant Test System and a more detailed introduction. Wuhan Goldhome have various types of Inductive Power Frequency Series Resonant Test System for sales.

 

http://www.hvcablehipot.com/