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Use of RCDs:
An RCD dedicated to an Integrated Electrical Service (IES) may be used to meet the mechanical cable
protection requirements and isolation requirements of AS/NZS3000 for the cable from the switchboard to the
IES. If an RCD is used, the RCD shall be set to the following parameters:
Table 3 - RCD.
1) Disconnect all live conductors (including the actives and neutral);
2) Check type specified in the inverter manufacturer’s instructions or as labelled on the inverter.
We recommend the use of an RCD on all circuits and sub-circuits connected to the Sunsynk inverter ie;
a Residual Current Breaker with Overcurrent protection (RCBO)
6.4.1. EARTH BOND RELAY
If an earth bond is required between neutral and earth, and your system is a hybrid system, then you can
have a permanent earth wire to prevent faults with an RCD before the inverter.
Since the inverter is a true hybrid, then the bond must only be made when the inverter is operating in
‘Islanding Mode.’ To accommodate this, Sunsynk provides an AC output, which is connected to the A/T/S
connections whenever the inverter is running on Island Mode. Therefore, you can simply connect the coil of
an AC relay to the ATS 240 connections. Next, you need to select Signal Island Mode on the battery charge
menu (click on the gear icon, then on the battery icon), as shown in Figure 41.
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