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NRG400 Hipot Circuit Breaker Tester is a comprehensive characteristic tester for high-voltage switches. It is designed to inspect the mechanical dynamic characteristic parameters of various high-voltage circuit breakers, including oil-lack, oil-excess, vacuum, and sulfur hexafluoride (SF6) models, providing essential data for performance analysis and protection evaluation in electric systems.
Product Parameters
|
Parameter Category |
Specification |
Details |
|
Time Measurement |
Channels / Range |
12 natural fractures; Internal trigger: 1ms–10000ms (0.01ms res). External trigger: 1ms–10000ms (0.1ms/1ms res). |
|
|
Accuracy |
Within 200ms: 0.05% ± 0.1ms |
|
Velocity Measurement |
Range |
0.01 – 20.00 m/s (with 0.1mm sensor) |
|
|
Types |
Instant opening/closing velocity, Average velocity of specified segment |
|
Travel Measurement |
Range / Resolution |
Linear sensor: 0-50mm (0.1mm res), optional 100-1000mm; Rotary encoder: 345°, 0-1000mm range (0.1° res) |
|
Current / Resistance |
Range / Resolution |
Current max: 20 A (0.01 A res); Resistance: 1000 Ω (0.01 Ω res) |
|
Internal DC Power Output |
Voltage / Power |
DC20–270V continuously adjustable; DC220V ≤ 20A (short time), 4400W |
|
External Trigger |
Voltage / Current |
AC/DC 10-300V, Current ≤ 120A |
|
Disconnect Switch Test |
Output & Acquisition |
Voltage: DC20–270V; Current output time: 0.01–10s; Max signal acquisition: 10s |
|
Power Supply |
Input |
AC 220V ± 10%; 50 Hz ± 10% |
|
Environmental |
Temp / Humidity |
-20℃ to +50℃; ≤ 90% RH |
|
Dimensions |
Mainframe |
385 x 320 x 205 mm |
Product Advantages
- Comprehensive Multi-Fracture Testing: Simultaneously measures 12 metal contact fractures (6 main + 6 auxiliary) in a single operation, capturing time, bounce, speed, and coil current/resistance.
- Integrated High-Power Supply: Built-in DC20–270V adjustable power supply (20A) eliminates the need for on-site secondary power, featuring unique dual-circuit design for redundancy and 1ms short-circuit protection.
- Versatile Sensor Compatibility: Equipped with a 360° non-dead-angle rotation sensor and linear sensors (30-1000mm), allowing arbitrary length setting without returning to the factory for program changes.
Main Application Scenarios
- SF6 Circuit Breakers: Testing mechanical characteristics of sulfur hexafluoride insulated high-voltage breakers, including GIS combination electrical appliances.
- Vacuum Switches & Contactors: Analyzing vacuum switch performance and special contactors such as train circuit breakers.
- Oil Circuit Breakers: Evaluating both oil-lack and oil-excess types of legacy high-voltage breakers.
Related Products
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Frequently Asked Questions (FAQ)
Q1: What should I do if the switch does not operate when using the instrument's internal DC power for closing/ opening?
A: First, verify the control wiring diagram to ensure correct connection to the close/open coil and auxiliary contacts. If the coil load exceeds the instrument's 20A capacity (common in permanent magnet switches), switch to External Trigger mode and use the on-site power supply.
Q2: Why does NRG400 Hipot Circuit Breaker Tester no speed data even though the sensor is connected and the switch operates?
A: Ensure the sensor type selection (Linear vs. Encoder) matches the physically installed sensor. Also, verify the installation position-rotation sensors must be mounted on a rotating spindle/arm to collect valid angular displacement.
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