Type B differential relay Circutor RGU-10B

The B type differential relay Circutor RGU-10B, reference P11951, is an advanced device for the protection and monitoring of differential current intensity. This relay is designed for applications in electrical systems that require the detection of alternating, direct, or mixed differential currents, making it an indispensable tool for ensuring the safety and reliability of complex electrical installations. It is ideal for protecting sensitive equipment and systems such as variable speed drives, UPS (Uninterruptible Power Supply) systems, photovoltaic installations, and motor control systems.

Advanced B type differential protection:
The RGU-10B is designed according to the requirements of the IEC 60755 standard for B type relays, which means it is capable of detecting leakage currents in alternating current (AC), direct current (DC), or even mixed currents with components in both. This capability makes it especially useful in applications where leakage currents may have various characteristics, such as in systems with variable speed drives or photovoltaic installations, where residual currents may not be exclusively alternating.

Compatibility with WGC-TB protection transformers:
The RGU-10B connects through a differential transformer from the WGC-TB series, allowing it to accurately measure leakage current in single-phase or three-phase installations. This feature ensures that the device can easily adapt to different network configurations, enabling its use in a wide range of electrical applications. The relay is capable of measuring differential currents with an adjustable sensitivity of 0.1 A to 3 A, providing flexibility to tailor the level of protection to the specific requirements of the installation.

Visualization and control via LCD display:
The RGU-10B incorporates a backlit LCD display, which allows for clear visualization of operating parameters and the status of the differential protection system. The display shows key information, such as the instantaneous leakage current, the trip value of the protection, and alarm states. In the event of a trip, the display changes to red, providing an immediate visual signal that a leakage condition requiring attention has occurred.

Additionally, the device features two LEDs that indicate the system status and can be easily configured via the control panel, allowing adjustments to parameters such as trip sensitivity and delay time.

Programmable relay outputs and pre-alarm:
The RGU-10B has two programmable relay outputs, one main and one pre-alarm, allowing users to program the relay to act before a definitive trip occurs, providing early warning of potential issues in the installation. The pre-alarm function is especially useful for performing preventive maintenance, avoiding unexpected failures and ensuring the continuity of electrical service.

The main relay output can be used to control a contactor or activate an automatic trip system for a circuit breaker, allowing for complete protection of the installation. Additionally, the relay has a remote control input, facilitating remote tripping and resetting, improving control and automation capabilities in critical installations.

Versatile applications:
The RGU-10B is ideal for uninterruptible power supply (UPS) systems, variable speed drives, photovoltaic installations, and motor control, where leakage currents can be complex and variable. Thanks to its ability to detect leaks in direct current (DC) and alternating current (AC), this differential relay is perfect for installations operating in electrical environments with various energy sources, such as those combining solar energy and conventional electrical grids.

Highlighted technical features:

• Power supply voltage: 230 Vac ± 20%, with a consumption of 6 VA, suitable for standard installations.
• Trip sensitivity (IΔn): Adjustable between 0.1 A and 3 A, allowing precise adaptation to the protection requirements of each installation.
• Delay time (tΔ): Adjustable between 0.1 and 10 seconds, offering options for fast or selective protection according to the needs of the installation.
• Relay output capacity: The relay outputs support up to 250 Vac and 10 A, with a load capacity of 2500 VA, ensuring that the relay can control a wide variety of protection and disconnection devices.

Easy installation and durability:
The RGU-10B is designed for easy mounting on DIN rail, with a compact size of 52.5 x 85 x 67.9 mm, facilitating its integration into existing electrical panels. Its robust construction includes a protection rating of IP20 at the terminals and IP41 at the front, ensuring its durability in controlled environments.

Regulations and safety:
This relay complies with international standards IEC 60947-2 (M), IEC 62020, and IEC 60755, ensuring that it meets the highest standards of safety and reliability in differential protection. Its design guarantees safe operation up to an altitude of 2000 meters, making it suitable for a wide range of industrial and commercial applications.

The B type differential relay Circutor RGU-10B is an advanced solution for differential protection in complex electrical systems. Its ability to detect leakage currents in AC and DC systems, along with its pre-alarm features and programmable outputs, makes it an ideal choice for critical installations that require reliable and adaptable protection.