Delta RPI-H3 Service Manual download pdf (Page 22)

5.2 AC Grid Connection: L + N + PE

WARNING! Death and serious injuries may occur.

Before AC wiring, please ensure AC breaker is switched off.

For RPI-H5, users must aware that AC configuration Setting must be set

correctly otherwise this device can not work. There are two types of AC

configurations (shown in figure 5-2) that are used in electricity systems. For

“AC Configurat.” setting please see chapter 7.2.2

Star configuration (3 phases + Neutral): L–N

(default), The voltage between each phase

and the neutral is 230/220 V. The voltage

between two phases is 400/380V.

Delta configuration (3 phased wires only) : L–L,

The voltage between two phases are

230/220V. As there is no neutral, there is no

phase-neutral voltage.

Figure 5-2 AC configurations

5.2.1 Required protective devices and cable cross-sections

Recommended upstream protection

Power rating Upstream circuit breaker

3.75kVA(RPI-H3), 6.25 kVA(RPI-H5)

20A(RPI-H3), 30A(RPI-H5)

Please use proper wire to connect correct poles (According to the Table 5-1).

Table 5-1 AC wire requirement

Current Rating Wire size Torque

>20A (RPI-H3), >30 A (RPI-H5)

3-4mm

/ 12 AWG 0.8~1Nm

1 2 ... 17 18 19 20 21 22 23 24 25 26 27 ... 55 56

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Delta RPI-H3 Service Manual Page 22