Schneider Electric Xantrex XW Guía de instalación descargar pdf (Pagina 26)

Installation

2–8 975-0540-01-01 Revision B

This guide is for use by qualified personnel only.

PV Grounding

You can configure the charge controller to be compatible with either negative-

grounded, positive-grounded, or ungrounded (floating) PV systems. For

information about routing the ground connection, see Figure 2-9 on page 2–13.

Chassis Grounding

The recommended size of the chassis ground conductor is #8 AWG (8.5 mm

)

For ground conductor requirements for your specific installation, consult your

local electrical code.

Internal Ground Fault Protection

The charge controller has different ground fault protection for grounded and

ungrounded arrays. For both types of ground fault protection, if the charge

controller detects a ground fault, it ceases operating and indicates a fault on the

charge controller’s display and over the Xantrex Xanbus™ network (if used). The

charge controller is configured at the factory for an ungrounded PV array.

Grounded Arrays For grounded arrays, the charge controller has two PV ground fault protection

fuse holders (for use with fuses rated 600 VDC, 1 A maximum) located inside the

wiring compartment. The fuse provides both a ground bond and ground fault

protection for grounded PV array systems.

Ungrounded

(Floating) Arrays

For ungrounded (floating) arrays, the charge controller detects the resistance

between the array and ground, and it indicates a fault if the resistance is too low.

Figure 2-6 Mounting the charge controller

Secure with two

more screws.

Place keyhole slot

over the mounting

screw.

¼"

(6 mm)

1.Based on the NEC (NFPA 70) Article 250 for 100 A maximum battery fuse.

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Schneider Electric Xantrex XW Guía de instalación Pagina 26