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Variable-frequency Resonant Withstand Voltage Test System

Variable-frequency Resonant Withstand Voltage Test System Variable-frequency Resonant Withstand Voltage Test System
Product name:Variable-frequency Resonant Withstand Voltage Test System
Item:6-11
Details:
 

I Description

This variable-frequency series-resonant voltage withstand test equipment is comprised of frequency power, exciting transformer, reactors and voltage divider, for testing different electric apparatus:

l  AC voltage withstand test for 6kV-500kV HV crosslinked cables

l  AC voltage withstand test for various kind of generators

l  AC voltage withstand test for 10-500kV switchgears, GIS and SF6 switches

l  Power-frequency voltage withstand test for 6kV-500kV transformers

l  AC voltage withstand test for other HV electric apparatus such as bushings, instrument transformers and busbars

II Main features

l  Touch screen operation, simple and convenient

l  Automatic scanning frequency, finding resonance point, frequency range 20-300Hz; max. duration for scanning 3minutes (full range); frequency resolution ratio 0.1Hz

l  Automatic testing, programmable

l  Under automation, automatic following system resonant condition; When resonant condition changes and exceeds pre-set range, system can automatic follows resonance point; Assures the system under best condition and draws frequency-voltage curve when frequency varies.

l  Automatic follows voltage; When voltage fluctuates normally, automatically adjust to target voltage

l  Full-voltage output protection: strictly avoid the frequency power never full-voltage output during regulating

l  Software is safe, stable and reliable, being strictly simulation run tested.

l  Automatically save test data; old test data can be inquired by conditions

l  LCD displaying power voltage and current and output frequency, voltage & current

l  Protection functions: over-current, over-voltage, power failure and flashover protections

III Configuration & application

Code

Application

Main configuration

Variable frequency power, 1 set

Exciting transformer 1 set

Resonant reactors

ZXZ-108/54/108

Test frequency:

45~300Hz

Transformers, 35kV, 31.5MVa

5kW

5kVA

27kV/1A, frequency45Hz

4 sets

35kVA circuit breakers, busbar and insulators

10kV cable 300mm2, 2000m long

35kV cable 300mm2, 500m long

ZXZ-216/108/216

Test frequency:

45~300Hz

110kVA circuit breakers, busbar

10kW

10kVA

54kV/1A

frequency45Hz

4 sets

110kVA GIS

35kV cable 300mm2, 1500m long

10kV cable 300mm2, 3000m long

110kV full insulated transformer

ZXZ-520/130/260

Test frequency:

45~300Hz

110kV circuit breaker, busbar

25kW

25kVA

65kV/2A

frequency45Hz

4 sets

110kVA GIS

110kV cable 300mm2, 800m long

35kV cable 300mm2, 3000m long

10kV cable 300mm2, 6000m long

110kV full insulated transformer

ZXZ-500/250/500

Test frequency:

45~65Hz

220kVA voltage transformer and current transformer

20kW

20kVA

125kV/1A

frequency45Hz

4 sets

220kVA bushings

220kVA post insulator, isolating switch

220kV circuit breaker

220kV insulating tools

 

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