Thyristor switch 5kVAr (SVC) 85-260V Modbus SM-SRL-5T 116036

Reactive power control with thyristor switch SM-SRL-5T

This thyristor switch is an advanced solution for precise reactive power compensation in electrical installations. The SM-SRL-5T device allows for effective control of three single-phase compensation chokes with a total power of up to 5 kVar, independently for each phase. This translates to optimized energy consumption and improved efficiency of the entire system.

Key features and application

The SM-SRL-5T switch uses a thyristor circuit, which enables smooth regulation of the power of inductive chokes. This makes it possible to adjust the operating parameters to current needs and conditions in the network. The device finds application wherever precise control of reactive power is required, and mounting space is limited. It is ideal for both installers and end-users looking for a reliable and efficient solution.

Advantages in practice

• Independent phase control: Each phase can be regulated separately, ensuring optimal reactive power compensation in unevenly loaded systems.
• Precise regulation: Thyristor technology enables smooth and accurate control over the power of inductive chokes.
• Compact dimensions: Dimensions of 110 x 104 x 130 mm facilitate mounting in tight spaces. The device weighs only 1.05 kg.
• Modbus communication: The Modbus RS485 interface enables integration with building monitoring and control systems (BMS) and other industrial automation devices.
• Wide power supply voltage range: The device operates in the voltage range of 85-260V AC, ensuring compatibility with various electrical installations.
• Thermal protection: Thermal inputs monitor the temperature of the compensation chokes, ensuring their safe operation and preventing overheating. An LED indicates the status of the thermal inputs – a continuous signal indicates normal operation, flashing indicates the absence of a neutral thermal input.
• Functionality testing: A test button allows you to check the operation of the device for a short time (10 seconds), facilitating diagnostics and servicing.

Technical specifications and installation

The device is designed for mounting on a DIN rail in a standard enclosure. Connection is made using plug-in terminals with a diameter of 1.5mm² or 2.5mm². It is important to connect the device correctly to avoid damage – phase L1 serves as the power input. Single-phase compensation chokes with a power of up to 1.66 kVar can be connected to each phase of the switch. Remember to connect the thermal inputs to the neutral point if the thermal characteristics of the chokes are not used. The device operates at temperatures from -20°C to +55°C and humidity below 95% RH.