Tigo EI Inverter Manual

Installation manual for the Tigo EI Inverter, including instructions for the EI Battery, ATS, and Energy Meter

The Energy Intelligence Residential Solution

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The EI Residential Solution includes the following components:

1. EI Inverter – The TSI-7.6K-US and TSI-11.4K-US inverters may be installed as grid-tied only or as an energy storage system when paired with the EI Battery. The inverter converts the PV array’s DC energy to AC for use in the building and when paired with an EI Battery, acts as the battery management unit.

2. TS4 – Tigo’s MLPE, the TS4-A-F provides module-level rapid shutdown. The TS4-A-O provides module-level monitoring, rapid shutdown, and best-in-class module-level optimization with Tigo’s patented Predictive IV.

3. EI Battery (optional) – The LFP battery is designed for use specifically with the EI Inverter. Up to four battery enclosures may be installed with the EI Inverters.

4. EI ATS (optional / required when batteries are used) – The EI ATS is an automatic transfer switch which switches the home loads from grid + Solar/battery usage to solar/battery usage only when the grid goes down. This is a required component to any energy storage system when connected to the utility grid as it prevents the potential for dangerous backfeed on the utility’s conductors.

5. Energy Meter – (optional / required when batteries are used) – The energy meter monitors the import and export of energy into the home’s electrical system. This allows the inverter to determine when and how much energy is required from the battery to serve connected loads.

6. EI Platform – Accessible through the web or mobile app, the EI Platform provides visibility into system and module performance. The EI mobile app is also used for commissioning the EI Residential Solution.

Figure 2 EI System Diagram