UHV(L) Inductance Adjustable Power Frequency AC Resonance Test System

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Last update: 2023-07-20 17:08
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UHV(L) Inductance Adjustable Power Frequency AC Resonance Test System

 

 

Technical Parameter

 

Rated output voltage

0~60kV (AC rms) and below

Output frequency

50Hz

Resonant voltage waveform

Pure sine wave, waveform distortion rate ≤1%

Work system

Full power continuous working time 1min

Quality factor

10~40

Maximum test capacity

3000kVA and below

Working power supply

380V±15%, power frequency 50Hz

 

Series product configuration (scope of application (AC withstand voltage test of generator or motor with outlet voltage 20kV and below, test frequency: 50Hz))

Product model

Control Console

voltage regulator

Reactor (dry)

Excitation change (dry)

Voltage divider

Scope of application

HTXZ(L)- 200kVA/25kV

30kW

30kVA (electric)

200kVA/25kV adjustable one

30kVA dry

30kV

Hydroelectric generator. 0.4~1.0μF。(10kV/40MW)

HTXZ(L)- 300kVA/50kV

60kW

60kVA (electric)

300kVA/50kV adjustable one

60kVA oil

50kV

Thermal generators.0.27~0.33μF。(20kV/300MW)

HTXZ(L)- 600kVA/50kV

60kW

60kVA (electric)

200kVA/50kV adjustable one 400kVA/50kV adjustable one

60kVA oil

50kV

Thermal generators.0.113~0.45μF。(20kV/600MW)

HTXZ(L)- 1200kVA/50kV

120kW

120kVA (induction)

200kVA/50kV fixed two 800kVA/50kV adjustable one

120kVA oil

50kV

Hydroelectric generator.0.6~1.8μF。(20kV/250MW)

HTXZ(L)- 2750kVA/55kV

300kW

300kVA (induction)

750kVA/55kV fixed two 1250kVA/55kV adjustable one

120kVA oil

60kV

Hydroelectric generator.1.6~3.3μF。(20kV/770MW)

Note: The solution can be customized according to the sample object parameters

 

Reference table of the capacity of hydroelectric generators commonly used in power systems

Hydroelectric generator

Rated capacity (WM)

Rated voltage(kV)

Phase capacitance(μF)

72.5~85

10.5

0.694

125~150

/

1.8~1.9

300

15.75

1.7~2.5

400

18.0

2~2.5

600

/

2.1~2.5

Nickname: Resonance System; Resonance Test System; AC Resonance Test; Resonance Test

 

 

 

Feature

 

1. Due to the full compensation of reactive power resonance, the power supply and equipment are only less than 1/10 of the required capacity of the tested product (1/Q10); The same capacity is small in size, light in weight, the output capacity of the device is large and the power capacity required for configuration is small, the price is low, and the operation is convenient and safe.

2. Series resonance is actually a current filter loop, so that the current passing through the test product is basically the fundamental current, and the waveform distortion rate (THD) of the output voltage is extremely small, which is better than all types of existing AC withstand voltage equipment.

3. The short-circuit current after flashover or breakdown of the sample is only less than 1/10 of the test current before the short circuit (1/Q), which can effectively prevent the expansion of damage to the fault point after breakdown.

4. Immediately after flashover, the arc is automatically extinguished, and the process of restoring the resonant state voltage establishment after arc extinguishing is long (seconds) is a steady-state establishment process, and there is no concern about voltage overshoot, nor the danger of recovery overvoltage in the microsecond-level millisecond-level transient process.

 

 

 

 

 

 

 

Q: What is resonance of a system?
A: A phenomenon in which an external force or a vibrating system forces another system around it to vibrate with greater amplitude at a specified frequency of operation.

 

Q: What is the effect of resonance in a system?
A: The most important effects of resonance can be listed as follows: The voltages for capacitive and inductive system components increase. As a result, inductive and capacitive system components draw overcurrent. The isolation of the circuit components becomes challenging.

 

http://www.uhvtest.com/

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