Rolec EVO Three-Phase Solar & Load Balancing CT Clamp Kit
The Rolec EVO Three-Phase Solar & Load Balancing CT Clamp Kit (ACSR5014) is a precision accessory designed to unlock the full smart charging potential of your Rolec EVO EV charger. This kit enhances the charger with dynamic load balancing and solar integration capabilities, ensuring safe, efficient and energy-optimised EV charging in three-phase electrical installations.
At its core, the kit includes current transformer (CT) clamps that monitor the real-time electrical load across the main supply feeding your property. Once installed around the incoming power cables, these clamps continuously measure how much electricity your home or business is using. By communicating this information back to the EVO charger, the system can dynamically adjust the charging rate to avoid overloading your electrical system and maximise usage of available capacity.
This is especially valuable in three-phase setups where multiple circuits and heavy-draw appliances are present. Without load balancing, charging at full power could risk tripping breakers or blowing fuses. The CT clamp kit prevents this by actively scaling the charger’s output in response to changes in your total electrical demand — reducing charge power when your site load is high and increasing it when more capacity becomes available.
In addition to smart load management, the ACSR5014 kit supports solar integration, enabling your EVO charger to detect and prioritise surplus energy from rooftop solar arrays. This means when your solar generation exceeds household usage, the charger can channel that clean energy into your EV first, lowering reliance on grid electricity and reducing overall charging costs.
Installation is straightforward for qualified electricians and is typically done at the main incoming service cables — often just after the electricity meter — where the CT clamps are clipped around each phase conductor. Once connected, the EVO charger uses the real-time data to make immediate charging decisions that improve electrical safety, efficiency and sustainability.
In summary, the Rolec EVO Three-Phase Solar & Load Balancing CT Clamp Kit (ACSR5014) is an essential addon for any three-phase EVO EV charging system that wants to benefit from:
- Dynamic load balancing for safer, smarter charging.
- Solar energy optimisation, using excess PV generation for EV charging.
- Enhanced electrical system protection by preventing overloads and fuse trips.
Whether you’re installing an EVO charger in a modern family home, commercial premises or a facility with significant existing electrical loads and renewable generation, this CT clamp kit helps get the most from your charging setup — safely, sustainably, and intelligently.
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.
- 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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