Eaton H-Max Series Installation Manual

Also see for H-Max Series: Quick start guide Installation manual Installation manual Manual

Engineering2Electrical Power NetworkInput Connection and ConfigurationThe H-Max series frequency inverters can be connected andoperated with all control-point grounded AC power networks(see IEC 60364 for more information).AC Power Networks with Grounded Center Point(TN-/TT Networks)While planning the project, consider a symmetricaldistribution to the three external conductors, if multiplefrequency inverters with single-phase supplies are to beconnected. The total current of all single-phase consumers isnot to cause an overload of the neutral conductor(N-conductor).The connection and operation of frequency inverters toasymmetrically grounded TN networks (phase-groundedDelta network “Grounded Delta”, USA) or non-grounded orhigh-resistance grounded (over 30 ohms) IT networks is onlyconditionally permissible.If the H-Max frequency inverters are connected to anasymmetrically grounded network or to an IT network(non-grounded, insulated), the internal interferencesuppression filter must be disconnected (unscrew the screwmarked EMC, see “Installation in IT System” on Page 33).The required filtering for electromagnetic compatibility (EMC)is then no longer present.Measures for electromagnetic compatibility are mandatory ina drive system in order to meet the legal requirements forEMC and low voltage regulations.Good grounding measures are a prerequisite for the effectiveinsert of further measures such as shielding or filters.Without respective grounding measures, further steps aresuperfluous.Input Voltage and FrequencyThe standardized input voltages (IEC 60038, VDE017-1) forenergy suppliers (EVU) guarantee the following conditions atthe transition points:● Deviation from the rated value of voltage: maximum ±10%● Deviation in voltage phase balance: maximum ±3%● Deviation from rated value of the frequency:maximum ±4%The broad tolerance band of the H-Max frequency inverterconsiders the rated value forEuropean as (EU: ULN = 230V/400V, 50 Hz) andAmerican as (USA: ULN = 240V/480V, 60 Hz) standardvoltages:● 230V, 50 Hz (EU) and 240V, 60 Hz (USA) at HMX32● 400V, 50 Hz (EU) and 480V, 60 Hz (USA) at HMX34_For the bottom voltage value, the permitted voltage drop of4% in the consumer circuits is also taken into account,therefore a total of ULN –14%.● 200V device class (HMX32):208V –10% to 240V +10% (188V –0% to 264V +0%)● 400V device class (HMX34):380V –10% to 480V +10% (342V –0% to 528V +0%)The permitted frequency range is 50/60 Hz (48 Hz –0%–66 Hz +0%).L2NL1L3PEL2PENL1L3