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DC/AC Inverter
PWS series
User Manual
Page 13 (24)
3. Handling
3.1 Storage
The modules must be stored in a dry, dust free environment with a storage temperature in accordance
with the technical specifications (see section 6).
3.2 Commissioning
Note: Before commissioning the module make sure that the input voltage level corresponds to the
nominal input voltage of the unit according to the type plate.
To mount the inverter in a 19'' compatible cabinet, a mounting set is necessary (see figure 7).
After unpacking the unit put it upon the rails and slide in the unit carefully over the rails until the mod-
ule connector gets in touch with the backplane connector. Increase the pressure a little bit until the
unit fits in completely. Please avoid too much pressure. If the unit does not fit in please start again with
the complete slide-in process.
Mount the unit with 4 screws (M4x12).
Figure 7) - Mounting set for PWS-F (the picture shows not a PWS but a similar module)
For the connection of DC input and AC output the PWS-F is fitted with a backside panel connector (the
PWS-W is fitted with screw terminals at the bottom). The DC input is protected against incorrect
polarity (if the polarity is reversed, the unit does not switch on).
The PWS-W serially is equipped with an internal input and output fuse (see section 6.2 "Specific data").
The PWS-F has no internal fuses. Therefore the module is to be fused with external fuses according to
section 6.2 "Specific data".
Check the load current before connecting the module.
A permanent overload is not allowed and decreases the inverters lifetime. Especially the inrush cur-
rents of consumer loads have to be observed (e.g. the inrush current of a common used computer
monitor can be more than 50 A!).
For the safety of individuals, the connection of a non-fused protective earth conductor generally is
required. Due to the specific overload and short circuit behaviour of the PWS, additional safety meas-
ures are to be arranged at the output (e. g. ground fault circuit interrupter).
ELTEK VALERE INDUSTRIAL ©2008
UM_PWS_E_R1.2
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