Eltek Valere Theia He-t Manual de usuario descargar pdf (Pagina 34)

34 User Manual THEIA HE-t String Inverters 357115.013, Issue 1.0, 2011 March

4.3.5. AC Side (Grid) Connections

The AC connection includes wiring from the AC distribution panel through one or more

circuit breakers to the AC terminal block of the inverter.

Verify that the AC grid specifications are compatible with the inverter characteristics before

connecting the inverter to the AC grid:

• Single phase/Split phase

• Voltage range (184 – 276 V)

• Frequency range (50 Hz ±5 Hz)

DANGER: Ensure that the AC terminals are discharged!

Turn OFF the AC circuit breaker(s) before connecting the inverter to the AC grid to

avoid shock hazards.

The THEIA HE-t series are single phase output inverters, which are designed so that they can

be connected to a three-phase system. When several inverters are connected together, they

must be distributed evenly between the grid phases.

Figure 4.3.14: Connecting the inverter to the grid

• PE (Protective Earth/Ground) conductor is an electrical path to true Earth, designed to

carry fault currents caused by insulation breakdowns within the equipment.

• N (Neutral) conductor in a single phase system is a circuit conductor carrying the same

amount of current as the ungrounded phase conductor. In a three phase system it is an

equalization conductor, designed to have a similar voltage potential to each of the phase-

conductors.

• L1 / L2 / L3 (Phase) conductors are the ungrounded live conductors, which carry current

to the load.

Single-phase

Three-phase

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Eltek Valere Theia He-t Manual de usuario Pagina 34