Variable Frequency AC Resonant Test System Cables Inductance Series Resonant Test Device

• Customization: Available
• Type: Tbd
• Selling Units: Single Item
• Model NO.: KDZD
• Reactor Q Yalue: 30-200 (Optional)
• Resonant Voltage Waveform: Sine Wave,Thd 1%
• Power Supply: 220V or 380V Single-Phase
• Customized Support: OEM,ODM,Obmsoftware Reengineering
• Rated Output Voltage: 27kv/54kv/108kv/135kv/216kv/270kv
• Output Frequency: 30-300Hz
• Frequency Adjustment: Fineness 0.1Hz,Instability 0.01%
• Output Waveform: Sine Wave
• Quality Factor: Max.Load 30
• Waveform Distortion Rate: 0.5%
• Single Gross Weight: 5.000kg
• Voltage: Other
• Full Load Working Time: Continuous Working Time 60mins
• Package Size: 50.00cm * 50.00cm * 50.00cm
• Package Gross Weight: 25.000kg

Product Description

Product parameters

Selection of 10kV cable withstand voltage test

Cable cross-sectional area

75kVA/75kV

88kVA/44kV

132kVA/22kV

176kVA/22kV

220kVA/22kV

264kVA/22kV

630mm²

0.4kM

1.5kM

2kM

2.5kM

3.5kM

4kM

300mm²

1.6kM

2kM

3kM

4kM

5kM

6.5kM

120mm²

2.0kM

2.5kM

4.5kM

5.5kM

7kM

7.5kM

25mm²

3.5kM

4.5kM

7kM

9kM

11.5kM

14kM

Number of reactor sections

2&3

2

3

4

5

6

Selection of 35kV cable withstand voltage test

Cable cross-sectional area

Voltage level

108kVA/54kV

108kVA/108kV

135kVA/108kV

216kVA/108kV

270kVA/270kV

630mm²

35kV cable

-

0.4kM

0.6kM

1.0kM

0.8kM

10kV cable

-

1.5kM

1.8kM

3kM

2kM

300mm²

35kV cable

0.6kM

0.7kM

1kM

1.6kM

1kM

10kV cable

2kM

2.2kM

3kM

4kM

3.5kM

120mm²

35kV cable

0.7kM

1kM

1.2kM

2.5kM

1.5kM

10kV cable

1.5kM

2.5kM

3.5kM

5kM

4.5kM

25mm²

35kV cable

1kM

1.5kM

2kM

3kM

2kM

10kV cable

3kM

4kM

5.5kM

8kM

7kM

Number of reactor sections

4

4

4

4

6

Number of reactor sections

Electrical equipment with voltage levels of 10kV and below

Electrical equipment with voltage levels of 10kV and below Electrical equipment with voltage levels of 35kV and below

Electrical equipment with voltage levels of 35kV and below

Electrical equipment with voltage levels of 35kV and below

110kV cable 300m ² 0.3kM withstand voltage test 110kV main transformer and below voltage level electrical equipment withstand voltage test

Products Features

Display:
The touch screen or external mouse-operated large LCD interface system displays a range of parameters, including resonant voltage (i.e., the target voltage set before the test), test frequency, measured frequency, low voltage, low current, withstand voltage time, overvoltage protection, overcurrent protection, flashover protection, phase-by-phase voltage increase and timing, operation mode switching, capacitance, inductance, frequency conversion calculations, and parameter inquiries. Additionally, it can display frequency curves, voltage curves, and other visual data to intuitively assess the accuracy and stability of the resonant frequency during the test.

Settings:
Various parameters can be configured directly using the large, touch-enabled LCD color screen or an external mouse. These settings include start frequency, stop frequency, start voltage, phase-by-phase voltage increase and timing, measurement divider ratio, excitation transformer ratio, overvoltage protection, overcurrent protection, flashover protection, test mode, capacitance and inductance frequency conversion calculations, parameter setting prompts, and help functions.

Automatic Test Mode:
The system supports operation via touch screen or external mouse and offers three operational states: automatic, semi-automatic, and manual. Functions include voltage ramp-up, tuning (manual and automatic), segmented voltage application and timing, operational state monitoring, mode switching, fault prompts, and capacitance-inductance frequency conversion calculations.

Tuning Range and Frequency Resolution:
Both the tuning range and frequency resolution are configurable. Tuning ranges include 30-300 Hz, 45-100 Hz, and 200-300 Hz, and can be customized to accelerate the tuning process. Frequency resolution can be preset to 0.1 Hz, 0.2 Hz, 0.5 Hz, or 1.0 Hz, allowing for an optimized balance between tuning efficiency and accuracy.

Automatic Tuning Method:
The system employs a rapid tracking method to locate the resonant frequency point within approximately 30-40 seconds. Once tuning is complete, the resonant frequency is locked. If no resonant point is found, the display area shows "Tuning Failed." During manual tuning, if no resonant point is located within the 30-300 Hz range, the display shows "No Resonant Point," and the system automatically disconnects the voltage circuit. Further voltage increases are prohibited to ensure the safety of the test object, equipment, and personnel.

Overcurrent Protection:
The system features multiple layers of automatic overcurrent protection. When the output current of the variable frequency power supply exceeds 1.1 times the rated value or the preset protection value, the system automatically cuts off the output of the entire device.

Overvoltage Protection:
The system includes multiple layers of automatic overvoltage protection. The test voltage value can be manually set. When the test voltage exceeds 1.1 times the preset value, the system quickly cuts off the device's output through both hardware and software.
This ensures the safety of the variable frequency power supply and operators. If the current sensor sampling value exceeds 1.1 times the theoretical value, the output is promptly disconnected to prevent overvoltage due to an error in the divider or its ratio settings.

Flashover and Discharge Protection:
The system features discharge and flashover protection for the test object. If high-voltage discharge or flashover occurs during testing or voltage ramp-up, the system automatically disconnects all devices, ensuring no harm to the testing equipment or personnel. Internal electronic components of the variable frequency power supply remain undamaged.

Power Failure Protection:
The system is equipped with power failure protection. A special protection module is installed at the output end of the variable frequency control power supply. If the input power supply is suddenly cut off during testing or voltage ramp-up, the system absorbs the resonance energy fed back to the host and quickly short-circuits the output, dissipating the energy in the resonance system. This module continues to operate for over 10 seconds after the power supply is interrupted to ensure complete energy dissipation. The system then disconnects all devices, ensuring no harm to equipment or personnel, and preventing damage to internal electronic components of the power supply.

Connection Error Protection:
The system provides protection against connection errors. If the test lines are connected incorrectly or disconnected (e.g.,
variable frequency control power supply, excitation transformer, resonant reactor, capacitive divider, etc.), the system activates protection measures.

Products Description

Company Profile

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