Rittal DK 7856.100 User Manual
Technical System Catalogue
Modular PDU (PSM)
Modular PDU (PSM)
Benefits of PSM busbars at a glance
◾ Modular configuration, flexibly extendible
◾ Redundant designs in busbars are supported
◾ Vertical mounting in the rack without loss
of U space
◾ Configuration changes are supported at any
time with the system operational by replacing
the module
◾ Shock-hazard-protected assembly of the
power distribution
◾ Choose from different connection types and
phase currents
◾ Extensive range of accessories for connection
cables and mounting kits
◾ Integral energy measurement and remote
monitoring via CMC III (with special PSM
measuring bars)
Technical System Catalogue/IT infrastructure2
Modular PDU (PSM)
Modular PDU (PSM busbars)
The PSM system is a unique, modular power distributor for
integration into IT network and server racks. The configuration
(type and quantity of output slots) can be modified to accommodate altered requirements at any time, even whilst operational.
The modular PDU comprises a support rail which is fitted
vertically into the IT rack. This PSM busbar has individual
module slots into which various PSM plug-in modules may
be integrated.
These plug-in modules are available in a range of output pin
patterns and functions. Alongside purely passive distribution
modules, special active modules with switching and measuring
functions may also be integrated into the PSM busbar.
The electrical connection is made using the preassembled
plug&play connection cable available as an accessory, but also
can be made directly by a qualified electrician using the Wago
X-COM connector included in the supply pack.
Some versions of PSM busbars, including all 32 A versions,
have a fixed, prefitted connection cable with CEE connector
(to IEC/EN 60 309).
A range of mounting kits are available for flexible rack mounting,
so as to accommodate varying requirements such as vertically
hinged installation or quick installation in the TS IT rack.
A
B
Each plug-in module
picks off a phase on the
support rail, either from
infeed A or from the
redundant infeed B,
depending on the
direction of connection.
Criteria for selecting the correct PSM busbar
◾ Enclosure height
◾ No. of infeeds
◾ Type of infeed (e.g. fixed infeed)
◾ Phase current (16 A, 32 A)
◾ No. of phases (single or three-phase)
◾ No. of required PSM plug-in modules
◾ Additional measurement and management functions required
3Technical System Catalogue/IT infrastructure
Modular PDU (PSM)
Function
Model No. 7856.005 7856.006 7856.008 7856.010 7856.020 7856.321 7856.323 7856.050 7856.053
Minimum height of rack (mm) 2000 2000 2200 1200 2000 2000 2000 2000 2000
Type of connection/length Fixed/3 m Fixed/3 m WAGO jack WAGO jack WAGO jack Fixed/3 m Fixed/3 m WAGO jack Fixed/3 m
Connector CEE CEE Various Various Various CEE CEE Various CEE
No. of infeeds 122221121
No. of phases 333331331
Phase current (A) 16 16 16 16 16 32 32 16 32
Various connection cables, also for single-phase
connection
––
◾◾◾––◾ –
No. of PSM module slots 778476666
Integral energy measurement of voltage, current,
active power, apparent power, active energy, power
factor, mains frequency
–––––––
◾◾
Measurement accuracy (U, l, f, P, S) –––––––2%2%
Measurement accuracy (E/kWh) –––––––1%1%
Graphic display for visualising the measurements
(24 V DC required)
–––––––
◾◾
CAN bus interface for connecting to CMC III system –––––––◾◾
Web server (IPv4, IPv6, SNMP, SSH) via CMC III
(PU III - 7030.000)
–––––––
◾◾
E-mail forwarding of exceeded limits and alarms
(CMC III required)
–––––––
◾◾
Operating temperature (°C) 5 – 45
Ambient humidity % (non-condensing) 10 – 90
Protection category IP (to IEC 60529) IP 20
Approvals CE CE CE CE/VDE CE/VDE CE CE CE CE
Technical System Catalogue/IT infrastructure4
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