Dutchi Motors B.V. DM1 Инструкции по монтажу и обслуживанию - Страница 4

Просмотреть онлайн или скачать pdf Инструкции по монтажу и обслуживанию для Двигатель Dutchi Motors B.V. DM1. Dutchi Motors B.V. DM1 8 страниц.

DMA2 & DM1 Mounting & Maintenance Instructions

When a motor is only suited for one direction of rotation, it is indicated with an arrow on

the motor fan cowl.

Connecting cables must conform to IEE regulations, as must earthing requirements.

Line fuses only protect the cables in case of short–circuiting and do not constitute a

safeguard against the overheating of the winding caused by overload. Therefore it is

recommended that a motor starter and overload is fitted, giving single phasing and

overload protection.

5.2.

Circuit

Normally our motors are provided with a terminal box with six connections, to which six

leads from the winding are connected either in a delta connection or in a star connection

by means of connection links.

Usually two voltages are indicated on the rating–plate of these motors, which means that

the motor can be connected to a circuit having one of these voltages.

If the mains voltage is corresponding with the lowest indicated voltage, the winding has to

be connected in delta connection (see figure 1); if it is corresponding with the highest

indicated voltage, the winding has to be connected in star connection (see figure 2).

A motor with e.g. 230/400V on its rating–plate is suited to be switched on directly, on a

circuit with a voltage of 230V between phases with the winding connected in a delta

connection, or on a circuit with a voltage of 400V with the winding connected in a star

connection.

But if the motor is switched on with a star–delta starter the motor is only suited for a

mains voltage on the rating-plate, this is the delta voltage. In this case, the connection

strips on the terminal box have to be removed when the motor is connected; the star and

delta connection will be made successively in the starter during the run up. If only one

voltage is indicated on the rating–plate together with the delta sign, the motor can be

switched on directly at the indicated voltage or with a star/delta starter.

Pole change motors (for two or more speeds) are connected according to a diagram sent

together with the motor.

Dutchi Motors B.V.

Power is our commodity, the world is our market !

Page 4 of 8

22-5-2006