BSXZ-W type non partial discharge variable frequency series resonance

Product Introduction

The BSXZ-W type non partial discharge variable frequency series resonance is mainly used to test the insulation level of various insulation materials, insulation structures, and electrical products that can withstand power frequency voltage. It is also used as a non partial discharge power supply for power frequency tests of transformers, transformers, lightning arresters, and other test samples. Widely used in electrical manufacturing departments, power operation departments, research institutions, and higher education institutions. Applicable objects: High voltage electrical equipment, such as transformers GIS、 Partial discharge and AC withstand voltage tests for transformers, switches, bushings, lightning arresters, cables, and power frequency AC withstand voltage tests for insulation materials.

Product Features

1. The complete set of equipment has a small local discharge capacity, which can ensure that the system's local discharge capacity is within the range of 5pC (special requirements can be customized).

2. The outer shell is made of epoxy resin casting and wrapped with glass fiber for non corona high-voltage insulation.

3. The complete set of equipment has low impedance, complete functions such as overvoltage and overcurrent flashover protection, and high reliability.

4. The pressure equalization cover is processed using a dedicated mold and formed from aluminum plate, with a smooth surface, light weight, and easy installation.

5. The large capacity high-voltage test device can achieve higher levels of intelligence and automation in system control, protection, and operation by selecting a power frequency intelligent measurement and control system.

6. Use fiber optic communication and sampling to thoroughly isolate high and low voltage control circuits.

7. The experimental process can perform real-time status self inspection and display

8. Equipped with comprehensive data and report management functions

9. High voltage U/T and I/T test curves can be recorded and plotted.

Technical parameters (special parameters can be customized)

Rated input voltage: three-phase 380V ± 10%, 50Hz.

Partial discharge level of complete equipment: ≤ 5pC under rated voltage (special customization for 2pC or below)

Output voltage stability: ≤ 1%

Voltage indication error: ≤ 1%

Noise: ≤ 65dB

Operating time (working system): Continuous operation for 60 minutes at rated voltage and rated current (can be customized for special requirements).

Overvoltage capability: At 1.1 times the rated voltage for 60 seconds, there will be no flashover, insulation breakdown, or any insulation damage.

Technical parameters of BSXZ-W type non partial discharge variable frequency series resonant withstand voltage device control console

model: BSXZ-W-50

Supply voltage and frequency: three-phase 380V ± 15%, 50Hz (partial discharge interference level of the power supply is less than 20pC).

Power supply capacity: greater than 60kVA

Rated output power: 50kW (maximum active power output)

Rated output voltage: 0-350V, continuously adjustable.

Rated output current: 143A

Output phase number: single-phase

Output waveform: pure sine wave

Output waveform distortion rate: ≤ 1.0％

Output voltage instability: ≤ 1.0％

Cooling method: forced air cooling

Adjustable frequency range: 20Hz~300Hz

Output frequency resolution: 0.1Hz

Output frequency instability: ≤ 0.5％

Noise level: ≤ 80dB

Partial discharge capacity:< 5pC

Allowable operating time: The allowable operating time under rated capacity is ≥ 1 hour.

Allowable temperature rise: Under rated load, continuous operation for 180 minutes, air outlet temperature rise ≤ 45K.

Technical parameters of excitation transformer for BSXZ-W type non partial discharge variable frequency series resonant withstand voltage device

model: BSJLB-W-100

Rated capacity: 50kVA

Number of phases: single-phase

Low voltage winding phase voltage: 2 × 350V, 2 × 400V, 2 × 450V.

Low voltage rated current: 143A

Rated voltage of high voltage winding: 2 × 10kV, 2 × 6.3kV. The high voltage winding consists of two independent windings. When parallel connected, the low voltage side is subjected to a 6.3kV transformer partial discharge test, and when series connected, the low voltage side is subjected to a 10kV transformer partial discharge test.

Insulation level: Induced voltage 1.2 times for 1 minute

Rated frequency: 50-300Hz

Partial discharge capacity: Local discharge capacity ≤ 10pC at rated voltage

Impedance voltage: ≤ 5%

Noise level: ≤ 65dB

Rated temperature rise: winding temperature rise less than 65K

Allowable continuous operation time: 60 minutes of continuous operation at rated voltage and rated current.

BSXZ-W type non partial discharge variable frequency series resonant withstand voltage device reactor

model: BSDK-W-90/15

Rated voltage: 15kV

Rated current: 6A/60min

Inductance value: 4H

Rated capacity: 90kVA

Usage frequency: 100-300Hz

Non linearity of inductance value: ≤ 1%

Insulation level: The reactor should be able to withstand a working voltage of 1.2 times its rated voltage for 1 minute without flashover or breakdown.

Partial discharge capacity at rated voltage: ＜ 10pC

Allowable continuous operation time: 60 minutes of continuous operation at rated voltage and rated current.

BSXZ-W type non partial discharge variable frequency series resonant withstand voltage device voltage divider

model: BSFY-W-500/60

Rated voltage: 60kV

Capacity: C1=500pF

Working frequency: 30-300Hz

System measurement error: ≤ 2%

Insulation level: 66kV/1min

Dielectric loss: ≤ 0.2%

Structure: C1 is an epoxy shell oil paper insulated capacitor, and C2 uses materials with the same temperature coefficient, frequency coefficient, and C1.

Partial discharge capacity: ≤ 10pC