Home > Products > AC Resonant Test Systems > Oil Insulated Variable Frequency Resonant HV ACTest Set
Oil Insulated Variable Frequency Resonant HV ACTest Set
USD $20,000 - $500,000
/ Set
1 Set(Min.Order)
- Shanghai
- T/T L/C D/P D/A
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Product Details
| Place of Origin | China | Brand Name | FSHV | |
| Model Number | FRST | Power | Electronic | |
| Usage | Other, Field high voltage test |
Product Description
Oil Insulated Variable Frequency Resonant HV ACTest Set
Introduction
Series Resonance System Variable Frequency Power Source for AC High Voltage Test .
FRST series variable frequency resonant test systems use HV reactors with fixed inductance, work by making reactors and capacitive test objects in series resonance by adjusting frequency of power supply to output pure sine wave AC voltage, typical frequency range is 20~300Hz.
FRST series HV reactors, main part of the system, are of oil insulation and epoxy glass-fiber insulating shell, module type and stackable, serial connect for higher voltage, parallel connect for larger current, voltage up to 2400kV.
These systems are ideal for field commissioning test of power cables and GIS/GIL.
| | |
Application
AC resonant test systems are mainly used to output AC voltage for high voltage routine, type and development testing of capacitive test objects. These systems exert the principle of series resonance, as per f=1/2π√LC, the connection of HV reactors (inductance L) to a capacitive loads (capacitance C) form an oscillating circuit with the frequency (f) of power supply.
Compared to conventional AC test transformers, the relatively lower power required (1/Q), smaller dimension and lighter weight favor these systems as the most practical for field testing, and large capacitance loads.
Configuration
| Essential | Optional |
| Variable frequency power supply | Switchgear cabinet |
| Exciter transformer | Compensation reactor |
| HV reactor | Power line filter |
| Capacitor divider | HV filter |
| Other configuration is possible upon request | |
Principle
Series resonant circuit consists essentially of an inductor in series with a capacitive test object or load connected to a medium-voltage power source. Alternatively it may consist of a capacitor in series with an inductive test object. By varying the circuit parameters or the supply frequency, the circuit can be tuned to resonance, when a voltage considerably greater than that of the source and of substantially sinusoidal shape is applied to test object.
The stability of the resonance conditions and of the test voltage depends on the stability of the supply frequency and of the test system characteristic, described by the quality factor, which is the ratio between test reactive power and power loss.
When a discharge occurs, the circuit capacitance discharges instantaneously and then follow-through current from the source is relatively low. The limit follow-through current generally results in less damage to the test object.
Reference
| | |
| 7500kVA 150kV×4 for field test of XLPE cable up to 8km and 500kV GIS | ||
| | |
| 12000kVA 333kV×6 | 6300kVA 350kV×2 fixed on truck, facilitate field test | |
Company Information
We are the leading and earliest manufacturer of high voltage, high current and high power test system in China, provide AC, DC, impulse testing and associated measuring equipment used to electrical application, such as testing project of power cables, power transformers, GIS switchgears, insulators, generators, arresters and etc. And test systems for laboratory, factory and field use are available.
Our factory was founded in 1970, and established R&D center institute of HV testing equipments in 1986, which cooperated with Shanghai Jiaotong University.
We are pleased to announce our quality management system has been approved to ISO 9001 : 2008, so far we have applied more than 58 invention patents.
We have well cooperated with many world famous electrical corporations, like ABB, ALSTOM, SIEMENS, TOSHIBA, HITACHI, HYUNDAI, AE POWERS and etc, also state grids, research institutes, universities and HV testing service providers, we have successfully offered them plenty of high voltage test systems, all well performed.
Our new factory is under construction, which will go into service in 2015, it will become the biggest manufacturer of high voltage testing equipment all over the world.
Contact us
| Contact person: Roger Chen Tel: 0086-159-8099 8097 Email: sales# Website: |
Contact Us
- Xiamen Fivestar Electric Test Equipment Co., Ltd.
- Contact nameRoger Chen Chat Now
- Phone86-592-5320837
- AddressTorch High-tech Zone, Xiamen, Fujian
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