Dual Canopy Mechanic Electrical Engineering Co., Ltd. is one of the leading manufacturers and suppliers of High Voltage Dividers in China. Please feel free to wholesale discount products for sale here and get quotation from our factory. Customized orders are welcome.
What is High Voltage Dividers?
A high-voltage divider is a precision measuring device that converts high voltage into a measurable low-voltage signal with accurate proportions. It is widely used in high-voltage testing systems for precise voltage measurement, high-voltage calibration, and power quality analysis. Based on application scenarios and frequency requirements, voltage dividers can be categorized as follows:
Resistive Divider (RD): Suitable for DC and low-frequency measurements
Capacitive Divider (CD): Suitable for AC and high-frequency measurements
RC Divider/Mixed Divider: Balances wide bandwidth and accuracy, suitable for comprehensive measurements
Impulse Divider: Used for lightning impulse/operating impulse waveform measurements. Choosing the appropriate voltage divider type is crucial for measurement accuracy. We can provide selection advice based on your testing system and frequency range.
What is Technical feature?
|
Measuring range (kV) |
AC 50kV |
AC 100kV |
AC 150kV |
AC 200kV |
AC 300kV |
|
DC 50kV |
DC 100kV |
DC 150kV |
DC 200kV |
DC 300kV |
|
|
Accuracy |
AC: 1.0 level DC: 0.5 level |
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|
Voltage divider impedance |
240MΩ |
400MΩ |
600MΩ |
800MΩ |
1200MΩ |
|
Voltage Divider Capacitance Ratio |
250pF |
250pF |
150pF |
250pF |
75pF |
|
Pressure ratio |
3000∶1 |
5000∶1 |
7500:1 |
10000∶1 |
15000∶1 |
|
Usage Environment |
Temperature range: 0~40℃ Relative humidity ≤85% |
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Note: 400~1000kV AC/DC digital kilovoltmeters are special specifications and are customized products.
How to select a model?
Test voltage type: DC/AC/Impulse/Hybrid
Operating frequency range: DC, Power frequency, VLF, Wideband
Accuracy requirements: General measurement (±2-5%) or metrological calibration grade (±0.1-1%)
Signal output requirements: Digital meter, oscilloscope, or data acquisition system
On-site installation conditions: Outdoor/Indoor, humidity, altitude, insulation method selection
What maintenance precautions should be taken?
Cleaning of Insulation Housing and High-Voltage Terminals: Regularly wipe with a dry, clean cloth to remove accumulated dust, oil, and moisture, maintaining proper insulation clearance.
Low-Voltage Arm Terminals and Connecting Wires: Regularly check terminal contacts, lead insulation, and shielding integrity.
Oil-Immersed Voltage Dividers (if applicable): Check oil level and seals; regularly check oil quality (leakage or discoloration requires attention).
Calibration/Metrology Cycle: For precision measurement and metrology applications, annual calibration or calibration according to internal control cycles is recommended, and the traceability certificate number should be retained.
Storage Conditions: Store in a dry, well-ventilated room, preventing condensation and corrosive gases; for long-term storage, a dust cover is recommended.
Functional Verification: Verify the voltage divider ratio using standard signals or reference instruments before important tests to ensure reliable results.
Our address
Baoding Cloud Center, Hebei, China
Phone Number
+86 13483219412
Salesm@dualcanopy.com
FAQ
Q1: What types of high voltage dividers are there, and what are their different applications?
A: They are mainly divided into resistive (DC/low frequency), capacitive (AC/high frequency), RC (wide bandwidth), and impulse (impulse waveform) types. The appropriate type must be selected based on the type and frequency of the test voltage.
Q2: Can a capacitive voltage divider be used for DC measurements?
A: No. Capacitive dividers present high impedance to DC and are mainly used for AC and high frequencies; resistive voltage dividers should be used for DC measurements.
Q3: What are the consequences of insufficient voltage divider accuracy?
A: It directly affects the accuracy of the test voltage, potentially leading to distorted test results or failure to meet standard requirements. In severe cases, it can cause misjudgments and safety hazards.
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