The overvoltage protector is an advanced protector that limits both lightning-induced overvoltage and operational overvoltage.

The under-voltage protection relay monitors the power supply to the equipment in real time, quickly disconnecting the power in case of over-voltage, under-voltage, phase sequence, or unbalanced three-phase voltage conditions.

Under-voltage Protection Relay

Features of Undervoltage Protection Relays

The crane is designed to operate in a three-phase, three-wire system, effectively accommodating the protection of three-phase, three-wire power supply equipment for cranes.

2. The protector is powered internally using a three-phase supply, ensuring that the protection function and fault marking are not affected even in the event of a random phase dropout.

3. Employing交流sampling technology, we achieve real-time detection of three-phase voltage fluctuations, resulting in more accurate measurements and more reliable fault diagnosis.

4. Accurately identifies phase failure in any condition (both dynamic and static phase failures).

5. Can accurately differentiate phase failure from phase sequence error.

6. Can individually identify various fault conditions.

7. Overpressure actuation values and actuation times are adjustable with flexibility; the actuation time can be as fast as 0.1 seconds.

8. Standardized HT35 rail installation is more convenient.

The total width is only 22.5mm, saving space inside the cabinet.

Overline terminal blocks for quick, easy, and reliable connections.

Effectiveness: The overvoltage protector is a new type of overvoltage protector, primarily designed to protect the insulation of electrical equipment such as generators, transformers, vacuum switches, busbars, and motors from voltage damage.

Surge protector

Surge protectors can short-circuit and dissipate excess current or overvoltage in circuits or communication networks due to external impacts in a very short time, thereby preventing surge damage to other devices within the circuit.

Surge protectors (also known as surge arresters or SPDs) are designed for AC 50/60 Hz systems with rated voltages from 220V to 380V. They are used to protect power (or communication) systems from indirect lightning strikes, direct lightning impacts, or other transient overvoltage surges. Suitable for surge protection requirements in residential homes, the third industry, and industrial sectors, these surge protectors offer various protection modes, including relative phase, relative ground, relative neutral, neutral to ground, and their combinations.

Surge Protection Devices (SPDs) are indispensable in lightning protection for electronic products. Their function is to limit the instantaneous overvoltage on power lines and signal transmission lines to a level that the equipment or system can withstand, or to divert strong lightning currents to the ground, thereby protecting the protected equipment or system from impact.

SPD is categorized by its application into two types: Power Line SPD and Signal Line SPD. Power Line SPD is a device that provides power to electronic products, also known as a power supply, which supplies electrical power to all components of a computer.