3
Product description
4
PSM overvoltage protection
EN
3
Product description
3.1
Function
The PSM overvoltage protection is provided in
3-phase form.
Each of the two 3-phase infeeds of the PSM
busbars requires its own overvoltage protection.
Existing systems can be upgraded with the
overvoltage protection.
It is equipped with a failure display (red control
LED). The pre-assembled connection cable is used
to feed the PSM busbar. The connection to the
busbar is made using a 5-pin plug-in terminal strip.
A connection cable type DK 7856.025 or the
connection plug enclosed with the PSM busbar is
required for the infeed.
The permanently green-illuminated LED
indicates that the overvoltage protection is
active.
An illuminating red LED indicates clearly the
failure of the overvoltage-protection unit!
Note!
The red LED indicates the initiation
of the overvoltage protection. The
connected units continue to be
provided with power but are not
protected.
The overvoltage protection must be
replaced as soon as possible.
3.2
Requirement class
The overvoltage protection is designed for
requirement class D (portable use on power
sockets).
3.3
Proper use, foreseeable misuse
The PSM overvoltage protection is used to protect
against overvoltage on all three phases.
The overvoltage protection is provided for the
overvoltage category ll in accordance with DIN
VDE 0110 Part 1.
It is designed for operation in data centres (IT
environment).
The unit is state of the art and built according to
recognised safety regulations. Nevertheless,
improper use can present a hazard to life and limb
of the user or third parties, or result in possible
impairment of the system and other property.
The unit should thus only be used properly and in
technically sound condition. Any malfunctions
which impair safety should be rectified immediately!
Follow the operating instructions!
The intended use also includes the observance of
the provided documentation and fulfilling the
inspection and maintenance conditions.
Rittal GmbH & Co. KG is not responsible for any
damage which may result from failure to comply
with the provided documentation. This also applies
to failure to comply with the valid documentation for
the accessories used.
