Hoymiles HMS-1000-2T Series Quick Installation Guide

Applicable to HMS-600/700/800/900/1000-2T microinverters

1. Accessories

Note: All accessories above are not included in the package and should be purchased separately.

2. Installation Steps

The order of Step 1 and Step 2 can be reversed according to your planned needs.

Step 1. Plan and Install the Microinverter

A) Mark the position of each microinverter on the rail according to the PV module layout.

B) Fix the screws on the rail.

C) Hang the microinverter on the screws, and tighten the screws. The silver cover side of the microinverter should be facing the panel.

Diagram Description: Illustration shows a microinverter being mounted onto screws on a solar panel rail. A torque specification of 9 N·m is indicated for mounting.

Notes:

• 1. An earth wire is present inside the wire cable for direct grounding. For external grounding, a grounding electrode can be used to bond the mounting bracket to the racking. Torque each grounding cleat screw to 2 N·m.
• 2. Install the microinverter and all DC connections under the PV module to avoid direct sunlight, rain exposure, snow buildup, and UV radiation.
• 3. Maintain at least 2 cm of space around the microinverter enclosure for ventilation and heat dissipation.
• 4. The mounting torque for the 8 mm screws is 9 N·m. Do not over-torque.
• 5. Handle the AC cable by its connector, not by pulling the cable itself.

Step 2. Plan and build the AC Bus Cable

AC Trunk Cable is used to connect the microinverter to the distribution box.

A) Select the appropriate AC Trunk Cable based on the spacing between microinverters. The connector spacing on the AC Trunk Cable should match the microinverter spacing for compatibility. Hoymiles offers AC Trunk Cables with different connector spacings.

B) Determine the number of microinverters per AC branch and prepare the corresponding AC Trunk Connectors.

C) Prepare segments of AC Trunk Cable for each AC branch.

• 1) Disassemble the AC Trunk Connector and remove the cable:
  • Use the AC Trunk Connector Unlock Tool to unlock the connector's upper cover.
  • Loosen the three screws with a screwdriver. Untighten the cap and remove the cable.
• 2) Install the AC Trunk End Cap on one end of the AC Trunk Cable:
  • Insert the AC Trunk End cap and screw it back into the port, then tighten the cap.
  • Plug the upper cover back onto the Trunk connector.

  Diagram Description: Illustration shows the AC Trunk End Cap being installed. Torque specification for the cap is 4.0±0.5 N·m.

• 3) Install AC end cable on the other side of the AC Trunk Cable (for connection to the distribution box):
  • Unlock the port upper cover, loosen the screws with a screwdriver, and remove any extra cable. (Skip if no cable is present on this side.)
  • Prepare an AC cable segment of suitable length for connecting to the distribution box, ensuring proper stripping.
  • Insert the cable into the cap, ensuring the L, N, and PE lines align with their respective slots.
  • Diagram Description: Illustration shows AC cable preparation with stripping lengths of 8±1mm and 40±5mm for L, N, and PE lines. Torque specifications of 0.4±0.1 N·m for locking screws and 4.0±0.5 N·m for the cap are indicated.
  • Tighten the screws and then tighten the cap back onto the port.
  • Plug the upper cover back onto the Trunk connector.

  Notes:

  • 1. Tightening torque for the cap: 4.0±0.5 N·m. Do not over-torque.
  • 2. Torque for locking screws: 0.4±0.1 N·m.
  • 3. Avoid damaging the sealing ring within the AC Trunk Connector during disassembly and assembly.

D) Repeat these steps to lay out the cable on the rail, ensuring microinverters can connect to the Trunk connectors.

E) Attach the AC Trunk Cable to the mounting rail and secure it with tie wraps.

Step 3. Complete the AC Connection

A) Push the AC Sub Connector from the microinverter into the AC Trunk Connector until it clicks. (Symbol: ✔️)

B) Connect the AC end cable to the distribution box and wire it to the local grid network.

C) Plug the AC Trunk Port Cap into any vacant AC Trunk Port to ensure it is water and dust-proof.

Notes:

• 1. Ensure AC Trunk Connectors are kept away from any water-channeling surfaces.
• 2. To remove an inverter AC cable from an AC Trunk Connector, use the AC Trunk Port Disconnect Tool. Insert the tool into the side of the AC Sub Connector to complete the removal.

Step 4. Create an Installation Map

A) Peel the removable serial number label from each microinverter.

B) Affix the serial number label to the corresponding location on the installation map (refer to the User Manual).

Diagram Description: An illustration of an installation map template is shown, with spaces for panel type, azimuth, tilt, sheet information, customer details, and numbered locations (1-16) for affixing microinverter serial number labels.

Step 5. Connect PV Modules

A) Mount the PV modules above the microinverter.

B) Connect the PV modules' DC cables to the DC input side of the microinverter.

Diagram Description: Diagram shows PV modules positioned above microinverters, with arrows indicating the connection of DC cables from the modules to the microinverter's DC input ports.

Step 6. Energize the System

A) Turn on the AC breaker for the branch circuit.

B) Turn on the main AC breaker for the house. The system will begin generating power in approximately two minutes.

Step 7. Set up Monitoring System

Refer to the 'DTU User Manual', 'DTU Quick Installation Guide', and 'Quick Installation Guide for S-Miles Cloud' for DTU installation and monitoring system setup.

Product information is subject to change without notice. Please download reference manuals at www.hoymiles.com.

Region: Global AP040439 REV1.2 © 2022 Hoymiles Power Electronics Inc.