Preparing Cables

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LUNA2000-(5-30)-S0 User Manual

This document describes the LUNA2000-(5-30)-S0 in terms of its installation, electrical connection, commissioning, maintenance, and troubleshooting.

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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).

Preparing Cables

Figure 5-1 Battery cable connections

(A) PV string	(B) DC switch	(C) SUN2000
(D) AC switch	(E) ACDU	(F) Smart Power Sensor
(G) Power grid	(H) LUNA2000	(M) FusionSolar app
(N) Load	(O) Important Load	(P) Backup

Table 5-1 Cables prepared by the customer

No.	Cable	Type	Recommended Specifications	Source
1	DC input power cable (inverter to battery and battery to battery)	Common outdoor PV cable in the industry	Conductor cross-sectional area: 4–6 mm² Cable outer diameter: 5.5–9 mm	Prepared by the customer
2	Signal cable (inverter to battery and battery to battery)	Outdoor shielded twisted pair cable (8 cores)	Conductor cross-sectional area: 0.20–1 mm² Cable outer diameter: 6.2–7 mm	Prepared by the customer
3	Ground cable	Single-core outdoor copper cable	10 mm²	Prepared by the customer

No.

Cable

Type

Recommended Specifications

Source

DC input power cable

(inverter to battery and battery to battery)

Common outdoor PV cable in the industry

Conductor cross-sectional area: 4–6 mm²
Cable outer diameter: 5.5–9 mm

Prepared by the customer

Signal cable (inverter to battery and battery to battery)

Outdoor shielded twisted pair cable (8 cores)

Conductor cross-sectional area: 0.20–1 mm²
Cable outer diameter: 6.2–7 mm

Prepared by the customer

Ground cable

Single-core outdoor copper cable

10 mm²

Prepared by the customer

Table 5-2 Cables delivered with the battery

No.	Cable	Type	Source
1	DC input power cable (power control module to battery expansion module)	Common outdoor PV cable in the industry	Delivered with the product
2	Signal cable (power control module to battery expansion module)	Outdoor shielded twisted pair cable	Delivered with the product
3	Ground cable	Single-core outdoor copper cable	Delivered with the product

indicates a power cable, indicates a signal cable, indicates wireless communication, indicates a ground cable.
The minimum cable diameter must comply with local cable standards.
The factors that affect cable selection include the rated current, cable type, routing mode, ambient temperature, and maximum expected line loss.
The DC input power cable and signal cable between the battery and the inverter must be less than or equal to 10 m.