STPCH2MBYL

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STPCH2MBYL, also known as portable quick fit protective device, is designed for phase control of short circuit capacity range, such as remote or local operation of fields or power systems. It is widely used in medium and low voltage power networks. The application field and working principle of STPCH2MBL are popular today.

STPCH2MBYL devices are generally used for switching and medium voltage applications, like line connection and disconnection or protection. They are used in medium and high voltage circuit-breaker switchgear, and can handle short circuit current, ranging from lower than 100A to higher than 80kA. Its core component is self-supporting arc detection device.

Working principle: STPCH2MBYL device is composed of contact parts and three-eyed semiconductor parts. In addition to the contact parts, the device also consists of control part, testing part and arcing sequence terminal. When the device is off, the arcing sequence terminal prevents the switching of the circuit breaker from taking place when the voltage is too high. When the voltage is not higher than the set value, arcing sequence terminal will only trip the circuit breaker after detecting the current, and then close the switch again. When the arcing sequence terminal works, it will separate the two contact points, preventing current flow and enabling the full opening of the circuit breaker.

The STPCH2MBYL device is widely used in many industries such as electric power sector, railway, municipal engineering, etc. The application fields include protective switchgear, relay and AC resistant device, low voltage switchgear, electrical distribution box, and other protective control circuits. Specifically, it can be used for local protection during power cut, remote protection and local control during power cut, breaker operation testing, self-excitation current test, real-time monitoring of power systems, fault location in substation, and so on.

In summary, STPCH2MBYL device can be used for a wide range of applications, such as protection, control, and monitoring, etc. Its core component is self-supporting arc detection device, which is mainly composed of contact parts and three-eyed semiconductor parts. In addition, the arcing sequence terminal can prevent current flow and ensure the full opening of the circuit breaker. STPCH2MBYL device provides a safe and reliable working environment for modern electric power systems.

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