Safety And Protection Requirements; Safety And Protection Requirements For The Mcb - ABB PCS6000 User Manual

2.7.1. Safety and protection requirements

The system integrator must ensure that the following minimum safety and protection
requirements for the converter are met.
– ISO 13849-1
– IEC 60204-1

2.7.2. Safety and protection requirements for the MCB

The following safety requirements are also in the MCB specifications for the converter:
– MCB open and/or trip command: must be wired directly from the converter to the MCB.
If you want to wire the command through a PLC or DCS system, the system must be
certified to meet SIL 3 requirements and to fulfill the maximum MCB opening timing
requirements. The converter must also be able to open the MCB at any time. It is not
permitted to interrupt the open and/or trip command, eg, with a local-remote switch in
the MCB.
– Closing control of the MCB: when the MCB is in service position, the converter must
have exclusive control over closing the MCB, ie, local closing of the MCB is not permitted.
– MCB maximum opening time: cannot exceed the maximum time that is defined in the
product or project-specific MCB specifications.
Typical maximum values for the converter are defined as follows:
– Maximum protection trip time: 75 ms
The maximum protection trip time is the maximum allowed breaking time (open and
arcing) of the breaking device after the open command has been initiated to prevent
further damage to the converter.
– Maximum safety trip time: 500 ms
The maximum safety trip time is the maximum allowed time to ensure safe
disconnection of the main power supply to prevent any hazard to personnel.
PRODUCT
PCS6000
DOCUMENT KIND
User manual
IMPORTANT SAFETY INFORMATION
DOCUMENT ID.
3BHS600000 E40
REV. LANG. PAGE
G en 27/114