No Partial Discharge Power Frequency Test Transformer | Partial Discharge Detection System | Lifetime Warranty

No Partial Discharge Power Frequency Test Transformer | Partial Discharge Detection System | Lifetime Warranty

35500 CNY (5168.9USD)

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Product parameters:

  • Voltage ratio: 1
  • Power phase: three-phase
  • Rated power: 2
  • Moisture way: open type
  • Cooling method: oil immersion from the cold type
  • Cooling form: liquid / oil type
  • Frequency characteristics: high frequency
  • Brand: Yu De
  • Winding form: double winding
  • Core form: ring
  • Core shape: ring type
  • Outline structure: vertical
  • Efficiency (η): 3
  • Model: YD
  • Rated voltage: 250kV
  • Rated current: 131.6A
  • Product Certification: 4



product description

Partial discharge detection system is designed for partial discharge measurement of electrical equipment such as transformers, motors, transformers, cables, GIS, switches, arrester and other electrical equipment, and its technical performance is in line with IEC-270 standard and GB7354 standard. It is an electrical equipment factory. Power supply operation department, power construction installation and commissioning department of the necessary test equipment.

working principle

Partial discharge detection system principle: the sample produced a partial discharge, the sample Cx at both ends of the instantaneous voltage change ΔU, through a coupling capacitor Ck coupled to the detection impedance Zm, the circuit will produce a pulse current I, the pulse current I can detect the apparent discharge quantity of the partial discharge by sampling, enlarging and displaying the pulse voltage generated by the impedance Zm.Pulse current method mainly uses the lower frequency part of the partial discharge signal spectrum to avoid the radio interference The
Partial discharge detection system configuration RLC-type detection impedance, measuring the partial discharge of the pulse signal, and inhibit the experimental power frequency and other low-frequency interference signal.
The partial discharge detection system is a pulse peak indication form test system, which has the functions of computer program control filtering, amplification, sampling, storage and display, etc. The data acquisition and test voltage can be synchronized with the direct method, bridge balance method, Discharge current I, square rate D, can be used for a variety of maps: qn, q-ф, q-ф-t, etc., partial discharge test system can detect less than 1000pC partial discharge of the ultrasonic signal.

Performance characteristics

The YDJF type partial discharge detection system is developed according to the IEC (270) standard using the principle of pulsed current method, which has four kinds of high frequency ellipse scanning, which are suitable for high pressure product type, factory test, new product development test, motor, mutual inductance Capacitors, cords, capacitors, transformers, surge arresters, switches and other high-voltage electrical discharge of the quantitative test for the factory, scientific research departments, the power sector on-site use.

System composition

△ YDJF type partial discharge detector host
△ YDW no local games

Test transformer
△ transformer operation box
△ LB frequency isolation filter
△ no localized coupling capacitor
△ protection resistance
△ correction pulse generator
△ input unit