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Connect Neutral to Input Grid N and voltage reference to Input Grid R,S,T.
Connect CT sensors ensuring correct direction and signal wire termination.
Diagram for connecting load limit signal wires for specific Enviro GTi models.
Diagram for connecting load limit signal wires for Enviro GTi 20000TD – 33000TD.
Diagram for connecting load limit signal wires for Enviro GTi 50 KT-60 KT.
Wiring diagram for multiple inverters connected in parallel.
Wiring diagram for multiple Enviro GTi 20000TD – 33000TD inverters.
Wiring diagram for multiple Enviro GTi 50 KT-60 KT inverters.
The Havells Anti-Reverse Power Controller (ARPC) is a sophisticated device designed to manage and control power flow, specifically preventing reverse power from flowing back into the grid. This controller is essential for installations that generate their own power, such as those with solar PV systems, ensuring compliance with grid regulations and optimizing self-consumption.
The primary function of the ARPC is to monitor the power flow between a local power generation system (like an on-grid inverter) and the main electrical grid. It continuously measures voltage and current, detecting any potential for reverse power flow. When the ARPC identifies that the local generation is producing more power than the local load is consuming, and this excess power is about to be exported to the grid, it intervenes. The controller sends a signal to the inverter(s) to reduce their output, thereby limiting the power exported to the grid to a predefined maximum or preventing export entirely, depending on the configuration. This anti-reverse power control mechanism is crucial for grid stability and for adhering to local utility regulations that may restrict or prohibit power export.
The ARPC operates by taking voltage references from the grid and current measurements from strategically placed Current Transformers (CTs). These CTs are installed on the main grid line, ensuring that the ARPC accurately monitors the net power flow. The direction of the CT installation is critical, with the arrow on the CT pointing from the grid towards the load, indicating the intended direction of power measurement for the ARPC's control logic.
The device is equipped with multiple output relays (RY1 to RY4) and a common ground (COM) that connect to the inverter's power control module. These connections allow the ARPC to send load-limiting signals to the inverter(s), effectively modulating their power output. The specific wiring configuration for these signals varies depending on the inverter model, as detailed in the installation manual for different Havells Enviro GTi series inverters. This adaptability ensures compatibility with a range of inverter types and capacities, including single and multiple inverter setups.
In multiple inverter installations, the ARPC can manage several inverters in parallel. The voltage sampling cable is connected to the grid, providing a common voltage reference for all inverters. The CTs are installed on the main grid line, and the load-limiting signal wires from the ARPC are distributed to each inverter's power control module. This allows for coordinated control of the entire generation system, ensuring that the combined output of all inverters does not result in unwanted grid export.
The ARPC is designed for straightforward installation and configuration, though it requires careful attention to wiring details. The physical installation involves choosing an appropriate position on a wall, marking and drilling holes, and then securely mounting the ARPC unit. The cover of the unit can be opened to access the internal wiring terminals.
Wiring involves several key steps:
The ARPC features an intuitive display and control interface. Operation indicators provide immediate feedback on the device's status:
Enabling the reflux (anti-reverse power) function is done through the device's menu. Users navigate to "1. Enter Setting," input a password ("0001"), and then select "Reflux Enable." A "success" message on the display confirms that the function has been activated.
For advanced configuration, the ARPC can be connected to a PC via an RS485-USB interface. This allows users to set up electrical parameters such as grid type (single-phase or three-phase), system capacity (in kW), and CT ratio (CTR). While these parameters are typically pre-configured at the factory, the PC interface provides flexibility for adjustments if needed.
The ARPC is designed for reliable operation with minimal ongoing maintenance. The primary maintenance considerations revolve around ensuring correct initial installation and addressing any operational anomalies indicated by the LED indicators.
Regular visual inspection of the wiring connections is advisable to ensure they remain secure and free from damage. Any loose connections or signs of wear on cables should be addressed promptly. The robust design of the ARPC, including its waterproof joints for cable entry, contributes to its durability in various environmental conditions.
In the event of a RED LED ON indicator, troubleshooting involves verifying the CT installation direction and ensuring that the voltage and current sampling phases are correctly matched. This typically points to a wiring issue that needs to be rectified according to the installation guidelines.
The ability to connect to a PC for configuration allows for diagnostic checks and parameter adjustments, which can be useful for troubleshooting or optimizing performance. However, as the electrical parameters are usually factory-configured, routine adjustments are not typically required. The device's internal components are designed for long-term stability, reducing the need for frequent internal servicing.
Overall, the Havells Anti-Reverse Power Controller is a robust and essential component for grid-tied power generation systems, providing reliable anti-reverse power control with user-friendly installation and monitoring features.
General| Remote Control | Yes |
|---|---|
| Functions | auto mode, sleep mode |
| Display | LED Display |
| Timer | Yes |
| Power Supply | 50Hz |
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