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SUN2000-(29.9KTL, 33KTL-A, 36KTL, 42KTL) User Manual

This document describes the SUN2000-(29.9KTL, 33KTL-A, 36KTL, 42KTL) in terms of their installation, electrical connections, commissioning, maintenance, and troubleshooting.

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Connecting the Ground Cable (PE)

Connecting the Ground Cable (PE)


The ground cable and OT terminal are available.
  • Ground cable: You are advised to use an outdoor copper cable with a conductor cross-sectional area greater than or equal to 16 mm2, and the conductor cross-sectional area should be greater than or equal to half of the conductor cross-sectional area of the AC output power cable.
  • OT terminal: M6


  • The ground point on the enclosure is preferred to connect to the PE cable for the SUN2000.
  • The ground point in the maintenance compartment is used for connecting to the ground cable included in the multi-core AC power cable. For details, see Connecting AC Output Power Cables.
  • There are two ground points on the enclosure and one of them is standby.
  • It is recommended that the ground cable be connected to a nearby ground point. For a system with multiple SUN2000s connected in parallel, connect the ground points of all SUN2000s to ensure equipotential connections to ground cables.


  1. Strip an appropriate length of the insulation layer using a wire stripper, as shown in Figure 5-3.

    Figure 5-3  Stripped length

  2. Insert the exposed core wires into the crimping area of the OT terminal and crimp them using hydraulic pliers, as shown in Figure 5-4.

    Figure 5-4  Crimping a cable
    The cavity formed after the conductor crimp strip is crimped must wrap the core wires completely. The core wires must contact the terminal closely.

  3. Remove the ground screws from the ground points.
  4. Secure the ground cable using the ground screw and tighten the screw to a torque of 5 N•m using a security torx wrench.

    Figure 5-5  Connecting a ground cable

    To enhance the corrosion resistance of the ground terminal, apply silica gel or paint on the ground terminal after connecting the ground cable.

Updated: 2019-08-02

Document ID: EDOC1100019925

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