Baldor E100 3.4 Power connections

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3.4 Power connections

Thiss ection provides instructions for connec ting the AC power supply.

Theins taller of this equipment is responsible for complying with NEC (National Electric Code)

guidelines or CE (Conformite Europeene) directiv es and application codes that govern wiring

protection, earthing/grounding, disconnects and other current protection.

DANGER:Electricalshock can cause serious or fatal injury. Do not touch any

power device or electrical connection before you first ensure that

power has been disconnected and there is no high voltage present

fromthis equipment or other equipment to w hich it is connected.

MicroFlex e100 drives are designed to be powered from standard single and three-phase lines

thatare elec trically symmetrical with respect to ear th/ground. The power supply module within

allMicroFlex e100 models providesrectific ation, smoothing and current surge protection. Fuses

orcir cuit breakers are required in the input lines for cable protection.

Note: AResidual C urrent Device (RCD) must not be used for fusingthe drive.

Anappropriate t ype of circuit breaker or fuse must be used.

All interconnection wires should be in metal conduits between the Mic roFlex e100, AC power

source, motor, host controller and any operator int erface stations. Use UL listed closed loop

connectors that are of appropriate size for the wir e gauge being used. Connectors are to be

installedus ing only the crimp tool specified by the manufacturer of the c onnector. O nly class 1

wirings hould be used.

Apermanent eart h/ground bonding point is provided on theheatsink, which must beused as the

protectiveearth. It is labeled w ith the protective earth s ymbol in the casting and doesnotf orm any

othermec hanical function.

ConnectorX1 containsearth terminals , but these must not be us ed as protective earth s ince the

connector does not guarantee earth connection first, disc onnection last. Earthing methods are

showni n section 3.4.2.

Note: When using unearthed/ungrounded distribution systems, an isolation tr ansformer

withan earthed/ grounded secondary is recommended. This provides three-phase

AC power that is symmetrical with respect to earth/ground and can prevent

equipmentdamage.

3.4.1.1 P rotection class

User protection has been achieved using Protec tive Class I(EN61800-5-1, 3.2.20), which

requires an earth connection to the unit whenever hazar dous voltages are applied. The

equipmentprovides pr otection against electric shock by:

HMeansof c onnection of protective earth to accessible liv e conductive parts.

HBasic insulation.

3.4.1.2 E arth leakage

Maximumearth leakage fr om the MicroFlex e100 is 3.4mA per phase (230V50Hz supply ). This

value does not include the earth leakage from the AC power filter, which could be much larger

(see section A.1.3). If the MicroFlex e100 and filter are mounted in an enclosure, it is

recommendedt he enclosure is earthed using a 10mm2conductor.