OEM Phase Sequence Monitor Voltage Protection Control Relay Factory

Phase Sequence Monitor Factory

Voltage protection relay uses a high-speed and low-power processor as its core. When the power supply line has over-voltage,under-voltage, phase failure, or phase reverse, the relay will cut off the circuit quickly and safely to avoid accidents caused by abnormal voltage being sent to the terminal appliance. When the voltage returns to the normal value, the relay will turn on the circuit automatical to ensure the normal operation of the electrical appliances under unattended conditions
1. Cut off the line when Over&Under Voltage occurs, and automatically reset and connect the line after returning to normal without manual operation.
2. When the line appears transient or transient over and under Voltage, the protector does not malfunction.

About Us

Who we are

YOSHINE is from China.
YOSHINE is a relay manufacturer.

Wenzhou Derrek Electric Co., Ltd. is a China Voltage Protection Relay Manufacturer and Sale Voltage Protection Relay Factory. YOSHINE’s products can be divided into two categories:
1. Products that manage electronic control processes (Step Relay, Time Relay, Switching Power Supply, Floatless Level Switch, etc.).
2. Products that protect equipment (e.g. motors) from voltage and current failures (Voltage Protection Relay, Current Monitoring Relay). OEM service is offered according to the client’s requirements.
Application of YOSHINE’s products is mainly in reset control (small hospitals, nursing homes, community houses), Lighting Control, Pump Control, Generator Control, etc. Considering the important role of our products, we keep developing new products and improving quality standards. YOSHINE not only involves all aspects of the industrial field but also intelligent control of offices and residences. We strive to provide clients with more efficient and intelligent products.
YOSHINE has gained a reputation for short lead time, flexible design, and excellent technical support.
YOSHINE has made its contribution to the development of our society and the global intelligence industry with the mission of “Made for Connection”.

YOSHINE

The Importance of Phase Sequence Monitor

A Phase Sequence Monitor is a protective device used in electrical systems to detect the correct phase sequence of a three-phase system. Three-phase systems are widely used in industrial and commercial applications due to their efficiency in power transmission. However, if the phase sequence is incorrect, it can serious damage to equipment, as motors, in particular, are highly sensitive to phase reversal. For example, an electric motor connected to a reversed phase sequence can run in the opposite direction, potentially causing mechanical damage or failure.

The importance of a phase sequence monitor lies in its ability to continuously monitor the phase sequence and immediately alert the user or shut down the system if a fault is detected. By doing so, it prevents the risk of equipment damage, ensures the safety of operators, and avoids costly downtime.

Additionally, phase sequence monitors help optimize the performance of systems that rely on three-phase power. By ensuring that the phases are correctly sequenced, they guarantee that motors and other sensitive equipment operate as intended, reducing the risk of unexpected breakdowns and extending the lifespan of machinery. In applications such as conveyor belts, air conditioning systems, and industrial pumps, the phase sequence monitor is a vital component that ensures smooth, reliable operation.

The Application of Voltage Control Relay

A Voltage Control Relay is an essential device used to maintain stable voltage levels in electrical systems. Its primary role is to monitor the system’s voltage and take corrective action when the voltage deviates from the preset thresholds. This helps prevent overvoltage or undervoltage conditions that could damage sensitive electrical equipment, such as computers, motors, or communication systems.

The voltage control relay is commonly used in power distribution systems, industrial plants, and commercial buildings, where fluctuations in voltage can cause significant operational issues. For instance, motors are designed to operate within specific voltage ranges, and any deviation outside these limits can result in overheating reduced efficiency, or permanent damage. In such scenarios, a voltage control relay automatically disconnects the load or takes corrective actions like adjusting the voltage by controlling auxiliary devices, such as transformers or capacitors.

One of the key applications of voltage control relays is in automatic voltage regulation (AVR) systems. In power generators and distribution networks, these relays ensure that the output voltage remains within a stable range, protecting both the generator and connected equipment. Voltage control relays are also used in grid systems, where they help stabilize voltage fluctuations caused by load variations or faults in the distribution network.

The Role of Voltage Protection Relay

The Voltage Protection Relay serves a critical function in protecting electrical systems from the adverse effects of abnormal voltage conditions, such as overvoltage, undervoltage, or voltage fluctuations. These conditions can occur due to faults in the power supply, electrical storms, or sudden changes in load, and can potentially damage both electrical equipment and the system’s infrastructure.

Voltage protection relays work by constantly monitoring the voltage levels in the system. If the voltage exceeds or falls below the preset range, the relay quickly activates a protective action, typically by disconnecting the affected circuit. This disconnection prevents further damage to the equipment, which may otherwise be exposed to harmful conditions. For example, when a voltage surge occurs, sensitive electronic equipment such as computers and communication devices can be destroyed by excess voltage. The voltage protection relay mitigates this risk by cutting off the power supply during a surge.

These relays are commonly used in industrial and commercial environments where sensitive machines, such as motors, transformers, and compressors, require constant voltage regulation. For example, in manufacturing plants, where heavy machinery operates, maintaining proper voltage levels is essential for smooth production. Voltage protection relays not only protect the equipment from damage but also help prevent operational disruptions that can arise from voltage-related issues.