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HF-WC-607 Disconnector Contact Pressure Tester
Our portable Disconnector Contact Pressure Tester precisely detects clamping force of tulip contacts and isolating switches. It supports data printing and USB export, adapts to 10kV-500kV switches, and we supply full technical support for global substation maintenance projects.
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Also named HF-TC-607 High Voltage Disconnector Contact Finger Pressure Tester, the tulip contact pressure tester for high voltage switchgear is designed to measure contact finger pressure and clamping force on various high-voltage switches, including folding-arm disconnectors, scissor-type disconnectors and tulip-contact high-voltage switches. It fits 10kV to 500kV domestic disconnectors as well as imported GW4, GW5, GW6, GW7, GW10, GW16, GW17, GW22, GW23 series and other models.
Developed and manufactured by Zhuoya Electric in compliance with relevant industry standards, the YGK series tester delivers instant pressure readings once the simulated contact sensor is inserted between each pair of contact fingers. By replacing sensor heads of different shapes, it can test contact finger pressure on various circuit breakers and switches.
Measurable Objects
It is applicable for measuring and inspecting contact clamping force of high & low voltage disconnectors, tulip contacts, SF6 load break switches, high voltage solid insulated switchgear, and main circuit connectors of low voltage drawer-type switch cabinets.
Reasons for Testing Contact Finger Pressure & Clamping Force
Contact pressure is a key indicator determining the conductive performance of the main circuit. It directly decides whether isolating contacts can withstand surge currents and maintain qualified temperature rise under full-load operation.
Contact pressure varies due to spring materials, manufacturing craftsmanship, assembly precision, service environment, load conditions and operating frequency. Regular pressure testing is essential to sustain stable and reliable contact performance long-term.
Application Scenarios
- Widely adopted by contact component manufacturers, high/low voltage switchgear factories, and on-site operation departments. It measures clamping force between moving and fixed contacts of tulip-contact switches, folding-arm disconnectors, scissor disconnectors, U-shaped rotary disconnectors and indoor clapper-type disconnectors.
- Ideal for power utilities, chemical plants and maintenance workshops during switch installation and overhaul. Technicians can conveniently calibrate and verify contact pressure on site.
Reference Contact Finger Pressure Values
Note: Standard load switches normally have a pressure around 200N; values vary among manufacturers for reference only.
- Tulip contact switches: Consult our technical engineers for recommended pressure data
- Rotary contact switches (GW4, GW5, GW7 etc.): ≥130N per pair of contact fingers
- Clamp-type contacts (GW6, GW16/17, GW22/23 etc.): ≥300N per pair of contact fingers
- Clapper-type indoor contacts (GN2 series etc.): ≥200N per pair of contact fingers
Technical Specifications
| Item | Parameter Details |
|---|---|
| Model | HF-TC-607 |
| Max Measuring Range | ≤500 N Accuracy: ≤1% reading ±1N Ranges over 500 N are customizable |
| Pressure Sensor | Customizable based on HV switch styles and contact finger opening distances |
| Optional Simulated Contact Finger Sensors (Type A / B / C) | Confirm switch type and finger opening distance before ordering. • Type A (Optional): Plug-in simulated clamp pressure sensor; equipped with 6mm, 8mm, 10mm, 12mm fixtures, adjustable within ±0.2mm, customizable • Type B (Optional): Fixed-gap universal clamp for tulip contacts; fits tulip contacts with diameter Φ30~Φ130mm, customizable • Type C (Optional): Sensor for folding-arm disconnectors |
| Signal Cable Length | 3 meters (customizable) |
| Display | 3.5-inch LCD screen with backlight, Chinese interface |
| Data Printing | Built-in mini thermal printer |
| Interface | USB flash disk port |
| Power Supply | DC 12V, built-in rechargeable lithium battery Continuous working time: ≥6 hours per full charge (longer runtime available on request) |
| Insulation Resistance | ＞2 MΩ |
| Dielectric Strength | Power supply withstands 1.5kV AC power frequency voltage against casing for 1 minute without flashover or arcing |
| Operating Conditions | Ambient temperature: -30℃ ~ +40℃ Relative Humidity: ≤80% RH Atmospheric pressure: 86 ~ 106 kPa |
| Power Consumption | ≤20 W (battery-powered) |
FAQ: Disconnector Contact Pressure Tester
Q1: What is a Disconnector Contact Pressure Tester used for?
It measures contact finger clamping force of high-voltage isolating switches and tulip contacts. Regular testing prevents contact overheating, ablation and power failures caused by insufficient spring compression.
Q2: What voltage levels and switch types are compatible with this tester?
It fits 10kV to 500kV domestic and imported disconnectors including GW4, GW5, GW6, GW16 and GN2 indoor switches, as well as SF6 load switches and low-voltage drawer-type switch cabinets.
Q3: What measuring ranges are available?
Standard models are YGK-500N and YGK-1000N. Measuring ranges above 1000N can be customized upon request.
Q4: How many optional sensors are available and what are their differences?
Three optional sensors are offered:
Type A: Adjustable plug-in clamp sensor
Type B: Universal sensor specially for tulip contacts
Type C: Dedicated sensor for folding-arm disconnectors
Custom-shaped sensors are also supported.
Type A: Adjustable plug-in clamp sensor
Type B: Universal sensor specially for tulip contacts
Type C: Dedicated sensor for folding-arm disconnectors
Custom-shaped sensors are also supported.
Q5: What is the measurement accuracy of the device?
The accuracy is ≤1% reading ±1 N. Stable test data fully complies with power industry preventive test standards.
Q6: Does the tester support data storage, export and printing?
Yes. Equipped with a built-in mini printer and USB port, it can store test data, export files to USB flash drives and print official test reports.
Q7: How long does the fully charged built-in lithium battery last?
A full charge supports 6 hours of continuous operation. Longer battery life can be customized.
Q8: Can the instrument be used for outdoor field work in harsh substation conditions?
It works stably at -30℃ ~ 40℃ with relative humidity ≤80% RH, suitable for year-round on-site maintenance tasks.
Q9: Is the device equipped with reliable insulation safety protection?
The instrument withstands 1.5kV power frequency voltage for 1 minute against the housing, with insulation resistance over 2MΩ, guaranteeing operator safety during high-voltage field tests.
Q10: What after-sales and technical services can overseas customers obtain?
We provide free remote operation training, 1-year global warranty and lifelong maintenance service. Custom configurations are available to match various overseas switch brands.
Q11: What are the recommended reference pressure values for common switch contacts?
Rotary contacts: ≥130N per finger pair
Clamp-type contacts: ≥300N per finger pair
Indoor clapper-type contacts: ≥200N per finger pair
You can consult our technical team for detailed parameters。
Clamp-type contacts: ≥300N per finger pair
Indoor clapper-type contacts: ≥200N per finger pair
You can consult our technical team for detailed parameters。
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