MD600 Double Trip Coil Simulated Circuit Breaker Device

Product Features and Applications

MD600Double trip coilSimulated circuit breaker deviceThe circuit breaker is manufactured based on the principles of large-scale field programmable gate arrays and power electronic devices with protection. The trip coil is designed as an independent dual circuit, which can simulate three-phase and phase separation operations at voltage levels of 6-500KV, as well as the action behavior of single or double trip coil circuit breakers. It is suitable for use in power systems, industrial and mining enterprises, research institutes, professional colleges, and protection manufacturers. It is an important supporting equipment for relay protection and automatic device transmission tests with switches. It has accurate, reliable, and unlimited action times, which can greatly improve the correctness and completeness of the test, minimize the actual action times of the circuit breaker, and improve its service life. It is an important supporting equipment for relay protection testing work.

MD600Double trip coilSimulated circuit breaker deviceThe external structure is portable and suitable for on-site testing.

Technical Specifications

The working power supply voltage is AC220V ± 10% 50HZ, and the working current is less than 0.5A.

The operating voltage for tripping and closing is DC200V or DC110V.

Selection of tripping time for tripping and closing:

20ms、30ms、40 ms、50 ms、60 ms、70 ms

90 ms、110 ms， The error shall not exceed ± 5ms

The closing time should be selected as 40 ms, 60 ms, 80 ms, 100 ms, 200 ms, 300 ms, 400 ms, 500 ms, with an error not exceeding ± 5ms (at 500ms, the error should not exceed ± 20ms).

Selection of tripping resistor for tripping and closing current:

∞Ω, 100Ω, 200Ω, 400Ω

Selection of closing resistor:

∞Ω, 100Ω, 200Ω, 400Ω

The tripping and closing current is automatically cut off by controlling the tripping and closing time.

When operating the circuit breaker simulation device through the "Manual Close" and "Manual Trip" buttons on the panel, there is no current passing through the circuit breaker simulation device's tripping and closing coils.

When the circuit breaker failure button is pressed, the circuit breaker does not operate, and the tripping and closing current is delayed for 1 second before disconnecting. After another 20 seconds, it returns to the current state.

Open measuring contact capacity:

DC220V/0.5A，AC220V/5A。

Technical Specifications

Circuit breaker position output contact:

There are 12 pairs of circuit breaker position output contacts, which are independent of each other. Divided into two groups, corresponding to the circuit breaker trip coil.

Hand closing and hand jumping contact points: 2 pairs

The hand close and hand jump buttons each have a pair of synchronous output normally open contacts. When the hand close and hand jump buttons are pressed, the contacts are connected. After the manual contact is activated, it will automatically hold and reset by the manual jump button. When the hand jump button is released, the hand jump contact will return with a delay of 60ms.