SEW MOVITRAC LTE-B series, Operating Instructions Manual

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Operating Instructions – MOVITRAC® LTE-B
21
4
Electrical installation
Installation
4.3 Electrical installation
Adhere to the safety information in chapter 2 for installation.
• MOVITRAC
®
LTE inverters must be installed by qualified electricians according to
the local and national directives and regulations.
• MOVITRAC
®
LTE-B has IP20 degree of protection. If higher degrees of protection
are required, use a suitable housing or the IP55/NEMA-12 or IP66/NEMA-4X
version.
• If the inverter is supplied with power via plug and socket or coupling, then do not
remove the plug until 10 minutes after having switched off power.
• Make sure the inverters are properly grounded. See wiring diagram in section "Con-
necting inverter and motor" (page 25).
• The grounding cable must be designed for the maximum fault current of the voltage
source that is usually limited by fuses or motor protection switches.
4.3.1 Before installation
• Make sure that supply voltage, frequency, and number of phases (single- or three-
phase) dcorrespond with the nominal values of the MOVITRAC
®
inverter on delivery.
• A disconnecting switch or similar disconnecting element must be installed between
voltage supply and inverter.
• Never connect the power supply to the output terminals U, V or W of the
MOVITRAC
®
LTE-B inverter.
• The cables are only protected by slow-blow high-power fuses or motor protection
switch. You find more information in section "Permitted voltage supply systems"
(page 23).
• Do not install automatic contactors between inverter and motor. Adhere to a mini-
mum clearance of 100 mm at points where control cables and electric power lines
are installed close to each other, and an angle of 90° for crossing cables.
WARNING
Danger of electric shock. Dangerous voltage levels can still be present inside the unit
and at the terminals up to 10 minutes after disconnection from the power supply.
Severe or fatal injuries.
• Disconnect and isolate the unit from the power supply at least 10 minutes before
starting work on MOVITRAC
®
LTE-B.
WARNING
Danger of fatal injury caused by falling hoist.
Severe or fatal injuries.
• MOVITRAC
®
LTE-B inverters may not be used as a safety device in hoist applica-
tions. Use monitoring systems or mechanical protection devices to ensure safety.