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RTB210 Lovato TOROID CT EARTH LEAK. RELAY TYPE B 210MM
Lovato RTB210 is a 210 mm toroidal current transformer designed for residual-current sensing with compatible Lovato Type B earth leakage relays in industrial and commercial electrical installations.
£612.72
Why Choose the Lovato RTB210 Type B Earth Leakage Toroid?
The Lovato RTB210 is a 210 mm toroidal current transformer for Type B earth leakage relays, designed to detect residual leakage currents in industrial and commercial electrical installations. It forms part of the Lovato RTB earth leakage monitoring range and is intended for use with compatible Lovato Type B residual-current monitoring relays.
With its large 210 mm internal diameter, the RTB210 allows multiple conductors or larger cable assemblies to pass through the sensing aperture. The toroid monitors the vector sum of the currents flowing through the conductors and supplies the residual-current measurement signal required by the connected earth leakage relay.
Type B earth leakage monitoring is particularly valuable in installations containing power electronic equipment capable of producing AC, pulsating DC or smooth DC residual currents. When combined with the appropriate Lovato Type B relay, the RTB210 provides a practical sensing solution for modern industrial power systems, drives, converters and other electronically controlled loads.
Key Advantages
- Dedicated toroidal current transformer for Type B earth leakage monitoring.
- Large 210 mm internal aperture accommodates substantial cable groups and busbar arrangements.
- Designed for integration with compatible Lovato Type B earth leakage relays.
- Supports residual-current monitoring in installations containing power electronic loads.
- Non-invasive measurement allows conductors to pass directly through the toroidal sensor.
- Suitable for industrial distribution, machinery and automation applications.
Key Features
- Lovato RTB earth leakage toroid series.
- 210 mm internal diameter.
- Designed for Type B earth leakage relay systems.
- Toroidal residual-current sensing principle.
- Suitable for monitoring conductors carrying AC power while detecting differential leakage current.
- Large aperture supports multi-conductor and high-current installations.
- Designed as a sensing accessory rather than a standalone protective relay.
Reliable Type B Earth Leakage Current Sensing
A toroidal current transformer surrounds the active conductors of the monitored circuit and detects any imbalance between the currents flowing through them. Under normal operating conditions the vector sum is effectively zero; an earth leakage current creates an imbalance that can be detected by the connected residual-current relay.
Type B monitoring is designed for applications where residual currents can include components beyond conventional sinusoidal AC leakage. This makes the Lovato RTB210 particularly relevant to installations incorporating variable speed drives, power converters, UPS equipment and other power electronics when used with the appropriate compatible Type B relay.
Typical Applications
- Industrial earth leakage monitoring systems.
- Electrical distribution boards and switchboards.
- Variable frequency drive and power converter installations.
- Industrial machinery and automation systems.
- UPS and electronically controlled power equipment.
- Large cable groups requiring a 210 mm sensing aperture.
Technical Specifications
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| Monitoring Function | Earth leakage / residual current | |
|---|---|---|
| HS Code | 85389091 | |
| Manufacturer | Lovato Electric | |
| Series | RTB | |
| Model | RTB210 | |
| Product type | Toroidal current transformer for earth leakage relay | |
| Earth leakage monitoring type | Type B | |
| Internal diameter | 210 mm | |
| Measurement principle | Residual / differential current sensing | |
| Application | Earth leakage monitoring | |
| Installation | Power conductors routed through toroidal aperture | |
| Function | Residual-current sensing for compatible external earth leakage relay |
Frequently Asked Questions
What is the Lovato RTB210 used for?
The RTB210 is a 210 mm toroidal current transformer used with a compatible Lovato Type B earth leakage relay to sense residual current in an electrical installation.
What is the internal diameter of the Lovato RTB210?
The RTB210 has an internal aperture diameter of 210 mm, making it suitable for installations with large conductors or groups of cables.
Is the RTB210 an earth leakage relay?
No. The RTB210 is the toroidal sensing transformer; it must be connected to a compatible external Lovato Type B earth leakage relay to form the monitoring system.
Why is Type B earth leakage monitoring used?
Type B monitoring is suitable for installations where power electronic equipment can generate residual currents containing AC, pulsating DC or smooth DC components.
Where is the Lovato RTB210 typically installed?
It is typically installed around the active power conductors in industrial switchboards, distribution systems, machinery and other installations requiring Type B residual-current monitoring.
Trusted Earth Leakage Monitoring from Lovato Electric
Lovato Electric earth leakage monitoring components provide dependable residual-current sensing for industrial power distribution and automation systems, with the RTB range supporting Type B applications where modern power electronic loads require comprehensive leakage-current detection.
