Model No.: HZJF
Weight: 0-100Kg
Power Source: AC 220V / AC 380V
Rated Capacity: 5-1000kVA
Impedance Voltage: 10%
Output Voltage Waveform: Power Frequency, Sine Wave
Output Voltage: AC 0-1000kV
Surface Temperature: Oil Immersed: <55°C, Gas: <50°C
Partial Discharge: ≤5PC at Rated Voltage
No-Load Loss: 0.2%-0.35%
Insulation Method: Oil or Gas
Trademark: United
Specification: Customizable
Origin: Hubei, China

Power-Frequency Partial Discharge Test Equipment/ Lab Equipment

I. Product Introduction & Features:

This equipment is primarily used for testing the insulation level of various insulating materials, structures, and electrical products. It also serves as a power supply for partial discharge testing on devices such as transformers, current transformers, and surge arresters. Widely applied in electrical manufacturing, power operation departments, research institutions, and universities.

The HZJF system includes the following components:

  • Test Control Cabinet
  • Free Gas Transformer
  • Coupling Capacitor
  • Protective Resistor
  • Isolation Filter
  • Partial Discharge Detector
  • Other Accessories

The Hezhong control unit and PD-free test transformer are responsible for controlling and boosting the voltage to the required level. The partial discharge detector identifies and displays the amount of partial discharge. The isolation filter helps eliminate interference from the power supply, while the coupling capacitor transmits the partial discharge signal to the detector.

Features include:

  • 320x240 LCD screen with high-speed thermal printer
  • Measuring modes for HV voltage, HV current, LV voltage, and LV current
  • High-precision sensors and 14-bit AD acquisition chip
  • Real-time display of HV voltage, HV current, LV voltage, LV current, time, and withstand result
  • Zero-returning detection for safe start-up
  • Insulation resistance detection function for direct measurement of insulation strength
  • Advanced PD-free epoxy insulating sleeve with low partial discharge
  • Low impedance voltage
  • Automatic control technology with strong anti-interference capability
  • Rapid electronic protection for high reliability

II. Main Parameters:

Rated Capacity 5-1000kVA Impedance Voltage 10%
Input Voltage AC 220V / AC 380V Output Voltage Waveform Power Frequency, Sine Wave
Output Voltage AC 0-1000kV Surface Temperature Oil Immersed: <55°C, Gas: <50°C
Partial Discharge ≤5PC at Rated Voltage No-load Loss 0.2%-0.35%
Insulation Mode Oil or Gas Allowed Continuous Operation Time 1 Hour (as per standard)

III. Company Information:

Wuhan Hezhong Electrical Equipment Manufacturing Co., Ltd. was established in 2002 and reorganized from the former Wuhan High Voltage Research Institute's test equipment factory. It is a leading supplier of high-quality equipment to the China State Grid. With years of innovation, it has become a high-tech enterprise specializing in the research, development, production, and sales of electric power testing equipment. The company holds multiple patents and its core technology leads the industry. It collaborates with prestigious universities such as Tsinghua University, Peking University, and Shanghai Jiao Tong University.

Our products are sold nationwide and exported to markets in North America, Europe, and Southeast Asia, including the USA, Singapore, and other international regions. We provide comprehensive sales and after-sales support to ensure customer satisfaction.

Power-Frequency Partial Discharge Test Equipment/ Lab Equipment

Needle Valve

High Pressure Needle Valve Stainless Steel

A needle valve is used to accurately control flow rates of gasses or fluids. The adjustments are gradual and smooth for controlling the flow rate. Needle valves allow for the slow and partial opening of the valve, it is used to regulate flow and pressure.

Can be used for liquids, gases and steam in hydraulic, pneumatic, heating and steam systems, water technology system, chemical and food industries application.

Suitable for applications where fine flow control is required Ideal for pressure control and isolation of liquids and gases in instrument and hydraulic installations.

Needle valves can be used in many different applications with a need for flow or pressure regulation, in water-maker, reverse osmosis and water treatment industry.

Orifice - 1/4", 3/8", 1/2", 3/4",1"

Bar stock body with compact design, with T-handle

PTFE Packing and Stainless Steel T Bar Handle.

Pressure rating: 414bar (6,000psi).

Temperature rating: -54°C to +232°C.

Connection: BSPP, BSPT, NPT, 1/4", 3/8", 1/2", 3/4" and 1".

Can be panel and inline mounted.

Marine quality 316 stainless steel.

Heavy duty pattern design, 100% factory tested.

Needle Valve,High Pressure Needle Valve,Stainless Steel Needle Valve,High Precision Needle Valve

NINGBO AIHUA AUTOMATIC INDUSTRY CO.,LTD , https://www.iwapneumatic.com