High Voltage Divider

Dual Canopy Mechanic Electrical Engineering Co., Ltd. is one of the leading manufacturers and suppliers of High Voltage Divider in China. Please feel free to wholesale discount products for sale here and get quotation from our factory. Customized orders are welcome.

A high-voltage divider is essentially a precision instrument that scales down extreme voltages into low-level signals that standard measuring equipment can handle accurately. You will find these devices throughout high-voltage testing setups, where they support precise voltage readings, calibration work, and power quality investigations.

The right divider for the job depends heavily on what you are measuring and at what frequencies. Here is how the main types break down:

Resistive dividers (RD) handle DC and low-frequency applications reliably. Capacitive dividers (CD) are the better fit when you are working with AC or higher-frequency signals. When you need decent performance across a broad frequency spectrum without sacrificing too much accuracy, an RC or mixed divider usually hits the mark. For capturing fast transient events like lightning or switching impulses, an impulse divider is purpose-built for the task.

Picking the correct type directly affects the integrity of your data. If you share details about your test system and the frequency range you are targeting, we can point you toward the most suitable option.

1.Accuracy and high voltage resistance:

2.Working Environment
Temperature:0~40ºC
Humidity:≤85%RH

3.Volume ,Weight

Grounding Must Be Reliable
The common ground of the low-voltage arm housing and the measuring terminal must be reliably connected to the same reference ground as the test system; otherwise, accuracy may be affected and safety risks may arise.

High-Voltage Connection Cable Insulation Class Must Match
The insulation class of the leads connecting to the high-voltage terminal of the voltage divider must meet the requirements of the highest test voltage and must not be downgraded.

Installation Location and Layout Specifications
Sufficient air gap (according to voltage rating) must be maintained at the high-voltage terminal to prevent surface discharge from affecting measurement results and safety.

Use Within the Frequency Range
Different types of voltage dividers have their applicable frequency ranges; exceeding the frequency range will lead to increased measurement errors or even damage to the device.

What kind of services do you provide?

Selection Calculation and Recommendation: Recommend suitable models based on the test system type, voltage level, frequency range, accuracy, and signal output requirements.

Supporting Solutions: Confirm the interface matching and connection scheme between the voltage divider and the test transformer/VLF/resonant system/data acquisition.

Metrology and Traceability Consulting: Provide calibration certificate levels and traceability instructions to meet project acceptance and metrology requirements.

Document Support: Technical parameter tables, outline drawings, wiring diagrams, and tender documents (to the extent you can provide).

Customization Capability: Voltage level, voltage division ratio, low-voltage arm output signal, and insulation method can be customized (according to project requirements).

 

Q1: What are the special requirements for voltage dividers used outdoors?

A: Higher protection ratings (IP rating), stronger weather-resistant insulation materials, and anti-fouling design are required. Attention should also be paid to wind load and stability after installation.

Q2: How to determine if a voltage divider is faulty?

A: Common signs include: abnormal fluctuations in the output signal, significant deviation in the voltage division ratio, discharge marks on the insulation casing, or leakage in oil-immersed types.

Q3: Can voltage dividers be used in series resonant systems?

A: Yes, resonant systems typically require a capacitive voltage divider for accurate output voltage measurement; frequency and capacitance matching must be confirmed.

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