Eltek Valere Theia He-t Instalační příručka stáhnout pdf (Strana 23)

Installation Guide THEIA HE-t String Inverters 357115.033, Issue 2.0, 2011 March 23

2.3.5.2. Jumper Position for Termination Resistance

With multiple inverters connected, the jumper located behind the CAN bus terminal activates

the termination resistance when the pins are short-circuited, which minimizes signal

reflections in the cables and avoids interference.

• Single inverter: The two pins must be short-circuited (Default).

• Multiple inverters connected: The master-slave configuration requires short-circuited pins

on the first inverter and on the last inverter in the linked series. The pins must be

disconnected on the inverters between the first and last inverters in the linked series.

• To disconnect the pins, the jumper must be pulled up and placed only on one of the pins.

• Be careful not to bend the pins when removing or installing the jumper!

Table 2.3.2: Jumper for multiple inverters in linked series

Connection Area

From the

side

From

above

Pins

The pins are short-

circuited.

The pins are

disconnected.

2.4. Safety Equipment Required for Grid Connected

Systems

Safety equipment includes switches or circuit breakers to disconnect power sources, fuses

or circuit breakers to protect conductors from overheating and surge protection to protect

the equipment from voltage bursts and surges.

NOTICE

Safety Equipment: The system installer is responsible for providing safety equipment that

meets the requirements for both the DC and AC operations to protect the equipment and

prevent personal injury.

Refer to User Guide for detailed information about rating and installation of the

safety equipment.

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Eltek Valere Theia He-t Instalační příručka Strana 23