VM600 MPS hardware manual (standard version) MAMPS-HW/E 8 - 7
Edition 17 - February 2018
Rack safety requirements
INSTALLATION
8.3.2 Circuit breaker
In some circumstances the operator must ensure a switch or circuit breaker is provided in
order to comply with the IEC/EN 61010-1 standard. This standard stipulates that permanently
connected equipment (such as a VM600 ABE04x rack) must employ a switch or circuit
breaker as a means of disconnection from the mains supply.
VM600 ABE04x racks employing an AC-input version of the RPS6U rack power supply
already have an ON/OFF switch or switches (and a fuse or fuses) at the rear of the rack.
However, this is not the case for the DC-input versions of the RPS6U rack power supply, so
an appropriately rated external circuit breaker or equivalent must be used.
8.3.3 Supply wiring
A VM600 rack using the AC-input version of the RPS6U rack power supply is supplied with a
mains power supply lead (power cord). Power supply rear panels with two AC inputs for
independent mains supplies are supplied with two mains cables. However, no lead (cable) is
supplied with a VM600 rack using the DC-input version of the RPS6U.
NOTE: Refer to the RPS6U rack power supply data sheet and VM600 system rack
(ABE04x) data sheet for further information on the mains power supply lead (power
cord) supplied with a VM600 rack.
For a VM600 rack using a DC-input version of the RPS6U rack power
supply, the mains power supply lead (power cord) linking the VM600 rack
to the mains supply must pass through an external switch or circuit
breaker.
The switch or circuit breaker must be installed and used in accordance with
the manufacturer’s instructions in order to ensure the correct and reliable
protection of the VM600 rack.
The switch or circuit breaker must be chosen in accordance with the
version of the DC-input RPS6U rack power supply used, and in particular
the maximum permitted input current and output power.
For later versions of the RPS6U (PNR 200-582-x00-02h or later) that define
the power as a total maximum output power of 330 W, the
recommendations are:
• A 30 A circuit breaker for an RPS6U rack power supply with a 24 V
DC
input
• A 6 A circuit breaker for an RPS6U rack power supply with a 110 V
DC
input.
For earlier versions of the RPS6U (PNR 200-582-x00-01h or earlier) that
define the power as a rated power of 300 W, the recommendations are:
• A 23 A circuit breaker for an RPS6U rack power supply with a 24 V
DC
input
• A 5 A circuit breaker for an RPS6U rack power supply with a 110 V
DC
input.
(See 2.10.1 Different versions of the RPS6U rack power supply for further
information.)
The operator must have easy access to the switch or circuit breaker at all
times.
In general, for a VM600 rack, the mains power supply lead (power cord)
used must be of sufficient cross-section to meet the power requirements of
the connected equipment.
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