Big Deye 5kW Inverter (SUN-5K-SG01/SG03/LP1-EU/AU) Teardown 2025 - Other parts | Part 4

Intro

This page has a lot off high-res photos with some analysis of the modern solar hybrid inverter DEYE SUN-5K-SG01/03/LP1-EU/AU.

⏭️ Because device has a lot of components I'm still updating article with more details. Moreover, article separated on several parts due to a lot of photos:

1️⃣	Big Deye 5kW Inverter (SUN-5K-SG01/SG03/LP1-EU/AU) Teardown 2025 — Boards \| Part 1
2️⃣	Big Deye 5kW Inverter (SUN-5K-SG01/SG03/LP1-EU/AU) Teardown 2025 — Heatsink \| Part 2
3️⃣	Big Deye 5kW Inverter (SUN-5K-SG01/SG03/LP1-EU/AU) Teardown 2025 — Inductors and transformers \| Part 3
4️⃣	Big Deye 5kW Inverter (SUN-5K-SG01/SG03/LP1-EU/AU) Teardown 2025 — Other parts \| Part 4
5️⃣	Big Deye 5kW Inverter (SUN-5K-SG01/SG03/LP1-EU/AU) Teardown 2025 — Housing \| Part 5
6️⃣	Big Deye 5kW Inverter Teardown 2025 — Quiescent and Standby Current \| Part 6

Sources

📦 All photos also available in archive (100MB+) : Teardown_DEYE_Inverter_SUN-5K-SG0103LP1-EUAU_refcircuit.com.zip

NTS TS HEATSINK CABLE

Type: NTC Thermistor
Rated: 1kOhm
Connector: No (Tinned Wires)
Size: D=3.3mm L=46mm (Stainless Steel Tube)

Should be connected manually to the grey spring clamp terminal. Can be used for battery temperature measurement. Sensor has isolation to prevent electrical connection beween battery and board.

PV INPUT CMC CABLE

Used to connect PV-CLC-V1.0 (PV FILTER) board and MAIN-V2.6 (Main board) M4 on the filter board side Faston on the main board side

CON to REL

AC LOAD CABLE

Connector: M4 Ring
Cable: silicone

Used for electrical connection of load from CON to REL board.

AC CON CABLE

Type: AC power connector from GRID/GENERATOR to AC-DC power supply with filter
LCR: L=9.3uH; R=67.8mOhm; Q=0.8657
LCR: L=9.1uH; R=64.5mOhm; Q=0.8903
Connector: 3P-2mm-HY connector
Cable: 300mm, protected by black heatshrink

Used for powering of the board from AC.

NTS TS HEATSINK CABLE

Type: NTC Thermistor
Rated: 100kOhm
Connector: PH 2.5mm RED
Cable: 190mm with protection
Size: M4

Connected to the main board. Screwed to the main heatsink to measure temperature.

POWER BUTTON

Used for inverter control for on/off. Looks like it can fully cut-off using control signal of power supply circuits. This is switch button. Blue LED Thread: D=21.6mm Connector: 4P-HY-2mm (white) Cable length: ~70mm (protected by the black heatshrink)