APSystems ECU-R-Gateway Standard ECU Zigbee Comm Wi-Fi No CTs No RGM

APSmart TECHNICAL BRIEF ECU-C Advanced Function Introduction

The APsystems Energy Communication Unit (ECU-C) is the information gateway for our microinverters. The unit collects module performance data from each individual microinverter and transfers this information to an Internet database in real time. Meanwhile, the unit has real-time data storage, remote control, and advanced functions. This paper mainly introduces the wiring of production / consumptionCurrent Transformers (CTs) and the advanced functions (meter function, zero export function, redundant energy control function, three-phase balance function).

Technical Description

• The CT must be connected in such the way that the arrow is pointing away fromthegridside.
• APsystems supplies 2 types of CTs: 80A or 200A. Choose according to desired performances.
• Make sure to use CTs provided by APsystems. Other CTs brands, even with similar specifications, will not work.
• White wire of the CT: connect to the “+” side,Black wire of the CT: connect to the“-“ side, each phase needs to be properly connected to the right pins:L1 to 1A/2A, L2 to 1B/2B,L3to 1C/2C.