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CDF2 MOTORIZED MECHANISM

The CDF2 on-load tap-changer motor-drive unit is mainly used as a mechanism to drive and control the tap-changer action, so that the tap-changer switches from one tap position to another, thus achieving voltage regulation.
The mechanical and electrical components required to operate the on-load tap-changer are installed in the motor drive unit and electrical interlocking circuits are used.
Generally, the motor-drive unit is supplied as an accessory to the on-load tap-changer unit as a complete set.
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1. Overview

The CDF2 on-load tap-changer motor-drive unit is mainly used as a mechanism to drive and control the tap-changer action, so that the tap-changer switches from one tap position to another, thus achieving voltage regulation.

The mechanical and electrical components required to operate the on-load tap-changer are installed in the motor drive unit and electrical interlocking circuits are used.

Generally, the motor-drive unit is supplied as an accessory to the on-load tap-changer unit as a complete set.


2. Technical data

Serial No.

Classification features

Data

1

Motor parameters

Rated power(W)

370

2


Rated voltage(V)

380(three-phase)

3


Rated current(A)

1.1

4


Rated frequency(HZ)

50

5


Rotate speed(r.p.m.)

1400

6

Output shaft drive torque, N.m.

45

7

Tap-change output shaft revolutions per stage

2

8

Tap-change handle revolutions per stage

30

9

Tap-change operation time per stage(s)

4.5

10

Control circuit and heater voltage(V)

220

11

Control loop excitation power(VA)

At the start of the operation

52

12


During the operation

16

13

Heater power(W)

150

14*

Control circuit frequency withstand voltage(kV/1min)

2.5

15

Motor-drive unit case protection class

IP54

16

Mechanism life(million cycles)

50

17

Weight(kg)

75

*Excluding motors, circuit breaker auxiliary contacts, and cable receptacles



3. Conditions of use

I The temperature of the air medium around the motor-drive unit is -25℃ at the lowest and +55℃ at the highest.;

I The altitude at which the motor-drive unit is used does not exceed 1000m above sea level;

I The inclination of the mounting axis of the motor-drive unit to the vertical plane does not exceed 5%;

I There should be no serious dust and corrosive or explosive gas around the motor-drive unit.


4. Dimensional illustration


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