IEC 60898-1 Clause 9.10 Circuit Breaker Tripping Test Equipment 2500A

Overview:

Developed based on customer-defined technical requirements, this equipment conforms to applicable national and international standards, including IEC 60898-1 (9.10), GB10963.1-2005 (9.10), GB14048.1-2006 (7.2.1), and JB/T8979-2006 (8.13), ensuring reliable and standardized performance for circuit breaker testing.

This equipment is designed to verify the delayed tripping performance of circuit breakers by applying currents at 1.13, 1.45, and 2.55 times the rated value, ensuring the breaker trips within the prescribed time limits. It can also assess the instantaneous tripping behavior by subjecting the breaker to currents ranging from 3 to 20 times the rated current to confirm compliance with tripping time requirements.

It is ideally suited for online testing of molded case circuit breakers (MCCBs) and miniature circuit breakers (MCBs) before delivery. As essential equipment for electrical performance verification in circuit breaker manufacturing, it features fast fixture installation, fully automatic testing, and intelligent pass/fail judgment.

The equipment housing is constructed from high-grade aluminum alloy and steel, with the panels finished using metal spray coating and treated for anti-static, rust, and corrosion resistance. The upper section is equipped with a control panel, power switch, and terminals of various specifications dedicated to delayed tripping tests. With a compact structure, user-friendly operation, stable performance, and a modern, aesthetic appearance, this system provides an efficient and reliable testing solution.

Technical Specifications

ONE. Constant Temperature Chamber

1. Integrated with the test system to provide a controlled temperature environment.
2. Temperature range: ambient ~ 50°C
3. Temperature resolution: 0.1°C
4. Temperature stability: ±1°C

TWO. Delayed Tripping Test Parameters

1. AC Current Output Range: 3–350A
2. AC Voltage Output Range: 0–5V
3. Output Channel: Single channel output; multiple-pole circuit breaker contacts are connected in series for simultaneous testing.
4. Applicable Product Range: Miniature circuit breakers rated from 3A to 125A
5. Output Current Waveform: Pure sine wave (waveform distortion ≤5%, total system error ≤3%)
6. Control Mode: Automatic regulation via touchscreen interface
7. Current Accuracy: Class 0.5
8. Voltage Accuracy: Class 0.5
9. Current Transformer Ratio: 400/5A
10. Test Duration: Adjustable from 1 to 999,999 seconds
11. Testing Process: After applying 1.13 times the rated current, the system will automatically increase to 1.45 times the rated current within 5 seconds for progressive testing.

THREE. Instantaneous Tripping Test Parameters

1. Fixture Method:Terminal connection, single-station configuration; compatible with 1P–4P circuit breakers
2. Output Current Range:AC 100A ~ 2500A
3. Number of Output Channels:1 channel
4. Current Accuracy:Class 5
5. Current Resolution:1A
6. Instantaneous Test Duration:≤ 0.2s
7. Action Time Upper Limit Setting:1 ~ 200 ms
8. Action Time Lower Limit Setting:1 ~ 200 ms
9. Test Station:1 station
10. Control System:PLC + Touchscreen interface
11. Timing Range:1 ~ 999 ms
12. Protection Features:Short-circuit protection, overload protection, leakage protection
13. Operating Temperature:0 ~ +40°C
14. Relative Humidity:20% ~ 90% RH
15. Chassis Dimensions:Length 1000 mm × Width 780 mm × Height 1600 mm

FOUR. Temperature Rise Test Parameters

1. Purpose:Verify that the circuit breaker, under normal operating conditions and tested according to specified procedures, does not exhibit a temperature rise exceeding the limits defined in Table 7 of the applicable standard.
2. Requirement:The circuit breaker shall remain undamaged and fully functional after testing, without compromising operational safety.
3. Temperature Measurement Channels:8 channels
4. Temperature Resolution:0.1°C
5. Temperature Measurement Range:0 ~ 200°C
6. Thermocouple Type:Type T
7. Temperature Display:Real-time curve display
8. Data Recording:Built-in temperature data logging function

Wiring for Temperature Rise Test:

1. Specifications 1 mm², 1.5 mm², 2.5 mm², 4 mm², 6 mm², 10 mm² — Length: 1 meter each, Quantity: 5 pieces per specification
2. Specifications 16 mm², 25 mm², 50 mm² — Length: 2 meters each, Quantity: 5 pieces per specification

Accessories:

1. Special adhesive for thermocouple fixation — 1 bottle
2. Solvent for adhesive removal — 1 bottle

Sample Display: