Eltek Valere Theia He-t Manual de usuario descargar pdf (Pagina 33)

User Manual THEIA HE-t String Inverters 357115.013

Issue 1.0, 2011 April

Follow the next instructions to avoid arcing when reconnecting the terminals:

• Turn OFF the DC switch(es) and the AC circuit breaker(s).

DANGER:

Never work with live wires!

The PV conductors are still charged after the DC switch in the Stringbox is turned

OFF, due to power fed from the PV modules. Always turn OFF the remote DC

switch and wait until the PV modules do not feed power.

• Remove the PV connectors.

• Check with a voltmeter if the terminals are discharged.

• Disconnect the conductors from the terminal block.

• Connect the conductors to the correct terminal block.

• Test the polarity using a voltmeter before turning ON the DC switch(es) and the AC circuit

breaker(s).

Jumper Position for the System Grounding Setup

The jumper above the - NEG terminal in the customer connection area monitors the

arrangement of the DC connection according to the system grounding setup. When delivered,

the jumper is positioned for an ungrounded string configuration as a standard. Depending on

the grounding requirements from the module manufacturer the jumper must be pulled up and

positioned correctly to match the required grounding of the PV strings.

In case of discrepancy a message will appear in the display (See 7.2. Table of Events).

Table 4.3.1: Position for the jumper monitoring the grounding setup

Connection Area

From the

side

From

above

System

Ungrounded PV String

There is no connection between the

pins.

Positive grounded PV String

The jumper short-circuits pin 1 and

pin 2.

Negative grounded PV String

The jumper short-circuits pin 2 and

pin 3.

1 2 ... 28 29 30 31 32 33 34 35 36 37 38 ... 77 78

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Eltek Valere Theia He-t Manual de usuario Pagina 33