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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 AC Output Power Cables

Connecting AC Output Power Cables

Prerequisites

A three-phase AC switch needs to be configured outside the AC side of the SUN2000. To ensure that the SUN2000 can safely disconnect from the power grid under abnormal conditions, select an appropriate overcurrent protection device according to local power distribution regulations.

Do not connect loads between the SUN2000 and the AC switch.

Context

  • If you connect a ground cable to the ground point on the chassis shell in a scenario with no neutral wire, you are advised to use a three-core (L1, L2, and L3) outdoor cable as the AC output power cable for the SUN2000-29.9KTL/33KTL-A/36KTL.
  • If you connect a ground cable to the ground point in the maintenance compartment in a scenario with no neutral wire, you are advised to use a four-core (L1, L2, L3, and PE) outdoor cable as the AC output power cable for the SUN2000-29.9KTL/33KTL-A/36KTL.
  • If you connect a ground cable to the ground point on the chassis shell in a scenario with a neutral wire, you are advised to use a four-core (L1, L2, L3, and N) outdoor cable as the AC output power cable for the SUN2000-29.9KTL/33KTL-A/36KTL.
  • If you connect a ground cable to the ground point in the maintenance compartment in a scenario with a neutral wire, you are advised to use a five-core (L1, L2, L3, N, and PE) outdoor cable as the AC output power cable for the SUN2000-29.9KTL/33KTL-A/36KTL.
  • If you connect a ground cable to the ground point on the chassis shell, you are advised to use a three-core (L1, L2, and L3) outdoor cable as the AC output power cable for the SUN2000-42KTL.
  • If you connect a ground cable to the ground point in the maintenance compartment, you are advised to use a four-core (L1, L2, L3, and PE) outdoor cable as the AC output power cable for the SUN2000-42KTL.
    Table 5-1  SUN2000-29.9KTL/33KTL-A cable specifications

    Cable Specifications

    Copper-Core Cable

    Copper-Clad Aluminum Cable or Aluminum Alloy Cable

    Conductor cross-sectional area (mm2)

    Value range

    16–70

    25–70

    Recommended value

    16

    35

    Cable outer diameter supported by AC OUTPUT 1 connector (mm)

    Value range

    18–44

    Table 5-2  SUN2000-36KTL/42KTL cable specifications

    Cable Specifications

    Copper-Core Cable

    Copper-Clad Aluminum Cable or Aluminum Alloy Cable

    Conductor cross-sectional area (mm2)

    Value range

    16–70

    25–70

    Recommended value

    25

    35

    Cable outer diameter supported by AC OUTPUT 1 connector (mm)

    Value range

    18–44

  • You need to prepare M8 OT/DT terminals by yourself. The following describes how to connect cables using the OT terminal as an example.
    NOTE:
    If you connect a ground cable to the ground point in the maintenance compartment, prepare an M6 OT terminal by yourself.

Requirements for OT/DT terminals:

  • If a copper cable is used, use a copper wiring terminal.
  • If a copper-clad aluminum cable is used, use a copper wiring terminal.
  • If an aluminum alloy cable is used, use a copper to aluminum adapter terminal or an aluminum wiring terminal with a copper to aluminum adapter washer.
  • Directly connecting an aluminum wiring terminal to the AC terminal block will cause electro-chemical corrosion and weaken the cable connection reliability.
  • The copper to aluminum adapter terminal or an aluminum wiring terminal with a copper to aluminum adapter washer must comply with IEC61238-1.
  • Do not mix up the aluminum and copper sides of the copper to aluminum adapter washer. Ensure that the aluminum side of the washer contacts the aluminum wiring terminal, and the copper side contacts the AC terminal block.
Figure 5-6  Requirements for OT/DT terminals

Procedure

  1. Remove the AC terminal cover, as shown in Figure 5-7.

    Figure 5-7  Removing the AC terminal cover
    NOTE:
    To highlight the involved area, the figure does not show the open door.

  2. Remove the locking cap from the AC OUTPUT 1 connector and then remove the plug.
  3. Choose whether to use rubber fittings based on the cable outer diameter and select one or more rubber fittings if required. Route the cable through the locking cap and then the rubber fitting.

    • Mismatch between the cable outer diameter and the rubber fitting may degrade the Ingress Protection Rating of the device.
    • To avoid damaging the rubber fitting, do not route a cable with a crimped OT terminal directly through the rubber fitting.
    • Do not adjust the cable when the locking cap is tightened. Otherwise, the rubber fitting will shift, which affects the Ingress Protection Rating of the device.
    Figure 5-8  Selecting the rubber fitting

  4. Remove an appropriate length of the jacket and insulation layer from the AC output power cable using a wire stripper.

    Ensure that the jacket is in the maintenance compartment.

    Figure 5-9  Three-core cable (excluding the ground cable and neutral wire)
    (A) Core wire (B) Insulation layer (C) Jacket
    Figure 5-10  Four-core cable (including the ground cable but excluding the neutral wire)
    Figure 5-11  Four-core cable (excluding the ground cable but including the neutral wire)
    Figure 5-12  Five-core cable (including the ground cable and neutral wire)

  5. Insert the exposed core wires into the crimping area of the OT terminal and crimp them using hydraulic pliers.

    NOTE:
    One core wire connects to one OT terminal.

  6. Wrap the wire crimping area with heat shrink tubing or PVC insulation tape.

    NOTE:
    If heat shrink tubing is used, put it through the power cable and then crimp the OT terminal.

  7. Route the AC output power cable through the AC OUTPUT 1 connector at the bottom of the chassis.
  8. Connect the AC output power cable to the AC terminal block, and then tighten the nut using a 13 mm socket wrench with an extension rod to a torque of 8 N·m. If you connect a ground cable to the ground point in the maintenance compartment, tighten the ground screw using a 10 mm socket wrench with an extension rod to a torque of 5 N·m.

    • Ensure that AC terminations are secured. Failure to do so may cause the SUN2000 to malfunction or cause damage to its terminal block from issues such as overheating.
    • If the SUN2000 is insecurely installed and the AC output power cable bears the pulling force, ensure that the last cable bearing the force is the PE cable.
    Figure 5-13  SUN2000-42KTL
    (A) 3-pin, excluding the ground cable (B) 3-pin, including the ground cable
    (C) 4-pin, excluding the ground cable and neutral wire (D) 4-pin, including the ground cable but excluding the neutral wire
    Figure 5-14  SUN2000-29.9KTL/33KTL-A/36KTL
    (A) Excluding the ground cable and neutral wire (B) Including the ground cable but excluding the neutral wire
    (C) Excluding the ground cable but including the neutral wire (D) Including the ground cable and neutral wire
    NOTE:
    The cable colors in figures are for reference only. Select appropriate cables according to the local standards.

  9. Install the rubber fitting in the AC OUTPUT 1 connector at the bottom of the chassis. Use a torque wrench with an open end of 65 mm to tighten the locking cap to a torque of 7.5 N·m.

Follow-up Procedure

Check that the cables are connected correctly and securely. Then seal the connectors.

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Updated: 2019-08-02

Document ID: EDOC1100019925

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