2.3.Transport, storage,installation
The invertermustbe protectedagainst inadmissible mechanical loads.Nocomponentsmust be
bentand no insulatingdistances mustbe altered duringtransportation or handling. The inverters
are containingelectrostaticsensitive components which are liabletodamage through improper
use.Do nottouch electroniccomponents andelectricalcontacts. Donot switchoninverters with
mechanicaldamaged electrical orelectronic components,the accordancewiththe applied directi-
vesis nolongerguaranteedinthiscase.With theinstallationofthe inverter attentionis tobepaid
to the prescribed minimum distancesaswellas toasufficientcooling.Theclimatic conditionsshall
be in conformity withEN 50178.
2.4.Electrical connection
Before performing anyinstallationworkthe system mustbe insulatedfrom themains supplyand
protected accordingly.
Afterswitchingoff the linevoltage, wait for atleast5minutes until the DC-link capacitors are
discharged. Onlythen itis allowed toworkonthedevice. Incaseofmalfunctions, the discharge
time could be exceeded substantially.
Becauseofapossibleleakagecurrent>3.5mAfromtheinstalledEMC-filter,the inverterisdesigned
only forpermanentconnection.For sizeandlayoutoftheGND(earth)conductor also see EN
50178.
The invertersare designed to beinstalled in a switchgear cabinet and may onlyoperate when
connected with earth-potential.
Foratrouble-freeoperationoftheinverter,the installation requirements and notes in this manual
are to beconsidered.
Whenusingresidual-current-operatedcircuit-breakerspay attention tothe compatibilitywiththe
inverter.Depending on thetypeofthedevicethe following rules apply:
•Single-phase inverters:pulse-currentsensitive(typeA) or all-currentsensitive(type B)residual-
current-operated circuit-breakers are admissible.
•Three-phase inverters:onlyall-current sensitive (type B) residual-current-operated circuit-brea-
kers are admissible.
Otherwiseanotherprotective measure such as separationfrom the environment by double or
reinforcedinsulation,disconnection from the mainsorsimilararetobeused(EN50178). Thetrigger
currentoftheresidual-current-operated circuit-breakers mustbesufficientlydimensioned since
capacitive leakage currents (cable screens, filters)can easilylead to falsetriggering.
2.5.Operating instructions
The invertercanbe configured to restartautomaticallyincaseofan error.If necessary, thesystem
mustbeequippedwithadditionalmonitoring or protective featurestoavoidresulting dangers(see
accident prevention rules etc.).
The motorcan be stoppedby switching off thesetpointordeactivating theenable input. Ifrequired
forsafetyreasons,aninadvertent restartcanbepreventeddisconnectingtheinverter from the
mains supply.
BERGES electronic
4Operating manual ACM D2/S2 09.07.2001