5.5 Circuit Breaker
5.5.1 AC Circuit Breaker and DC Disconnect Switch
The circuit breaker populated on the distribution board varies depending on the installer.
Follow the installation standards to install a circuit breaker satisfying the voltage, the current specification
of the Grid and the PV. Refer to Chapter 5.1.2 for cable specification.
Electrical Connections I 34
5.5.2 RCD (residual current device) Leakage Circuit Breaker
This product can cause a DC current in the external protective earthling conductor. Where a residual
current-operated protective (RCD) or monitoring (RCM) device is used for protection in case of direct or
indirect contact, rcd should be type b type a should have rcmu and rcmu can make inverter protect
when dc conponent large than 6ma.
AC circuit breaker
DC disconnect switch
[ Table 5-6 : Circuit breaker and DC Disconnection Switch ]
[ Table 5-7 : RCD Leakage circuit breaker description ]
Standard
230Vac / 32A
650Vdc / 27A or more
Short circuit current rating
10kA minimum
-
Item Description
Detecting AC residual currents and pulsating DC residual
currents of mains frequency, as well as smooth DC residual
currents and AC residual currents ≠ mains frequency
Type B
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