Why decoupling detection of circuit breakers is vital
In an electrical system, circuit breakers are a crucial piece of equipment used to protect circuits from electrical faults such as overloads and short circuits. To ensure the safe and reliable operation of an electrical system, regular decoupling testing of circuit breakers is an essential step. In this paper, we will discuss why decoupling testing of circuit breakers is so important.
I. Ensuring the Reliability of Electric Circuits
The main task of a circuit breaker is to detect current anomalies in an electrical system and quickly cut off the circuit to prevent overloading or short-circuiting of equipment. However, prolonged operation and various environmental factors may lead to wear and tear or malfunction of internal parts of circuit breakers. Through regular release detection, these problems can be detected and solved in time to safeguard the reliability of the circuit breaker and ensure that it can effectively cut off the current when needed to prevent damage to electrical equipment.
II. Preventing Circuit Faults
Circuit faults may occur in various forms, such as short circuits and overloads. Tripping detection can help to identify potential problems and prevent faults from occurring. Through regular testing, problems such as abnormal current and insensitive circuit breaker action can be detected in advance, and appropriate maintenance measures can be taken to avoid serious circuit failures and reduce maintenance costs.
III. Increase equipment life
The prolonged operation of electrical equipment may lead to aging and wear of the internal parts of the circuit breaker, reducing its performance and life. Regular decoupling detection helps to find and deal with these problems in time, extends the service life of the circuit breaker, and improves the stability and reliability of the equipment.
IV. Improve the safety of the electrical system
The normal operation of circuit breakers is vital to the safety of the electrical system. If the circuit breaker cannot quickly cut off the current when needed, it may lead to equipment overload, fire and other dangerous situations. Through decoupling detection, it can ensure that the circuit breaker is in good working condition, improve the safety of the electrical system, and reduce the risk of accidents.
Regular decoupling testing of circuit breakers is a key step in maintaining the stable operation of electrical systems. By safeguarding the reliability of circuits, preventing circuit failures, increasing equipment life and improving the safety of electrical systems, decoupling testing not only helps to reduce maintenance costs, but also ensures the stable and safe operation of electrical equipment for a long period of time. Therefore, managers and maintenance personnel of all kinds of electrical systems should attach great importance to the decoupling test to ensure that circuit breakers are always in the best working condition.
Guangzhou Sunho's circuit breaker release performance tester is based on the standard IEC 61009-1-2012, IEC 60898-1-2005 requirements. It is suitable for 28 days test, time-current characteristic test, instantaneous release test (short circuit test) and temperature rise test of circuit breaker.
Technical parameters are as follows:
1.Equipment power supply: AC380V±10%/50Hz;.
2. Instantaneous power maximum about 15KVA.
3. the test environment: 5-35 ℃.
4. Test station: 1 station.
5. Test mode
5.1 Time-current characteristic test (maximum output current 200A)
Current output: 5 ~ 200A continuously adjustable, one way (or three-way output)
Current accuracy: ± 4% (10 ~ 50A) ± 2% (50~ 200A)
Timing: 1 ~ 9999999S ± 0.1S
The instrument can work continuously under the condition of maximum output 200A, including power-down save function:
(1) 1.13In Cold start, no de-energising at the agreed time (can be preset), accuracy: 0.1s;
(2) 5s rise to 1.45In, agreed time off (can be preset), accuracy: 0.1s; (3), 5s rise to 1.45In, agreed time off (can be preset), accuracy: 0.1s
(3) Cold start 2.55In time: 0.1~720.0s can be preset, accuracy: 0.1s;
5.2 Instantaneous release test (Maximum release current 1260A)
Detachment current range: 200~1260A adjustable, accuracy: ± 2%
Test voltage: not more than 24V
Current output: one way output
(1) 3In cold start, the agreed time not to debounce: 0.01 ~ 3.00 seconds can be preset, the collection accuracy: 0.1s.
(2) 5In time: 0.01 ~ 3.00 seconds can be preset, the collection accuracy: 0.01s;
(3) 10In time: 0.01 ~ 3.00 seconds can be preset, acquisition accuracy: 0.01s;
(4) 20In time: 0.01 ~ 3.00 seconds can be preset, the collection accuracy: 0.01s.
6. Current adjustment mode: manual adjustment. Greater than 800A above shall not be greater than 1 second time.
7. temperature rise test: sample temperature and ambient temperature measurement, measurement range: RT +10 ℃ ~ 300 ℃ using Omega T-type thermocouple measurement.
8. cold start: when the sample temperature and ambient temperature difference does not exceed the set range (1-99 ℃ can be set), the sample is considered to have been cold state.
9. Automatic judgement should take off time and should not take off time to meet the requirements.
10. the test test control system by the temperature sampling control system, signal acquisition system, computer system, computer automatic calculation and processing can be stored or printed into a table (graph). Software can generate time - current, current - temperature rise curve.
11. computer DELL or similar brands, dual-core processor, 19-inch LCD monitor to provide supporting software, WINDOWS operating interface.
12. external dimensions: about 1500 * 1200 * 1650
