Rolec EVO Three-Phase Load Balancing CT Clamp Set (ACSR5013)
The Rolec EVO Three-Phase Load Balancing CT Clamp Set (ACSR5013) is a precision accessory designed to expand the smart charging capabilities of your Rolec EVO EV charger in three-phase electrical installations. It enables dynamic load balancing, giving your vehicle charger the ability to intelligently adapt its power output to match your property’s real-time energy usage — keeping your electrical system safe while maximising charging performance.
At the core of this kit are high-accuracy current transformer (CT) clamps that monitor the total electrical load flowing through the main supply cables feeding your site. Once installed around the incoming three-phase conductors (typically just after the utility meter), these clamps continuously measure the combined current draw of your home or business.
The data collected by the Load Balancing CT Clamp is sent to the EVO charger, which uses it to adjust charging power in real time. If the overall load on your electrical system approaches its maximum safe capacity, the charger automatically reduces its power output to prevent overloads and potential tripping of your main fuse or circuit breakers. As other appliances reduce their consumption, the charger increases power again — providing the fastest safe charging possible without straining your electrical infrastructure.
Key Benefits
- Dynamic Load Balancing: Continuously balances EV charging against household energy use to prevent overloads and maintain electrical safety.
- Improved Efficiency: Enables your EVO charger to deliver the maximum safe charging power available at any given moment.
- Enhanced Protection: Reduces the risk of tripping main fuses or circuit breakers by actively regulating charging in response to other loads.
- Seamless Integration: Designed specifically for use with Rolec EVO smart chargers to ensure reliable performance and compatibility.
Installation of the Load Balancing CT Clamp set is generally handled by a qualified electrician and typically involves placing the clamps around the main supply conductors in your electrical distribution board. Once connected, the EVO charger uses real-time insights from the clamps to make intelligent power adjustments that protect your electrical system while optimising EV charging.
In summary, the Rolec EVO Three-Phase Load Balancing CT Clamp Set (ACSR5013) is an essential accessory for anyone installing a three-phase EVO EV charger in environments where multiple electrical loads are present. It enhances charging safety, improves energy utilisation and helps you get the most efficient charging performance from your smart EV charging system.
What is a CT clamp?
A CT clamp (Current Transformer clamp) for an EV charger is a safety device that monitors the total electrical load in a home. It measures the electricity flowing through the main power cable, and if the load gets close to the home’s maximum capacity, the EV charger automatically reduces its charging rate to prevent the main fuse from blowing. This allows for safe charging and enables “load balancing” by adjusting the charger’s output to match the home’s available power.
- Installation: The CT clamp is attached to the main power cable entering your home, often directly after the electricity meter.
- Measurement: It detects the total current being used by the home at any given moment.
- Communication: The clamp sends this information to the EV charger.
- Adjustment: If the total home load approaches the maximum limit, the charger will reduce its output.
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Balance: When other appliances in the home are switched off and the total load decreases, the CT clamp signals the charger to increase its rate again, optimizing the charge.
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Prevents Overloads: It stops the charger from drawing too much power, which could blow the main household fuse.
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Load Balancing: It enables dynamic adjustments to the charging speed, ensuring that the home’s electrical system is not overloaded while still providing the fastest possible charge.
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Solar Integration: It allows the charger to prioritize and use excess solar power for charging, reducing reliance on the grid.
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Safety: It helps maintain the safe operation of the electrical system by constantly monitoring current levels.
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