Toshiba M-2001 Series Manuel d'utilisateur télécharger pdf (Page 21)

–14–

M-2299 Application Guide

M-2299

TAPCHANGER

CONTROL

TB1 on printed circuit board

14

15

LOAD CURRENT

AUX

CT

A

5 A

200 mA

3

4

LDC-CT

XXXX:5 A

Shorting

device

Normally 1-CT on

X , X , X bushing

123

N/U

N/U

Figure 8 Setup for Current Checkout Procedure

3. Apply motor power to TB1-9 (hot) and

TB1-8 (neutral). Set the AUTO/OFF/

MANUAL switch to MANUAL and using

the RAISE/OFF/LOWER switch, verify

that the motor runs in the proper direction

when this switch is in the RAISE and

LOWER positions.

4. Set the AUTO/OFF/MANUAL switch to

the AUTO position. Refer to the Field

Checkout Procedure as found in the

Status & Setpoint Review Guide of the

M-2001 Tapchanger Control Instruction

Book for test/operation procedures.

5. As shown in Figure 6-1, Typical External

Connections, in the M-2001 Series

Instruction Book, temporarily place a

shorting device across the LDC-CT

secondary to short the line drop

compensator circuit, and place another

shorting device across TB1-3 and TB1-4

to short the circulating current paralleling

input, for the load current check. Insert

an ammeter between the polarity input

and TB1-14. Open the load current

shorting device and with a known load

on the transformer or regulator, measure

the current in the load current circuit to

ensure that this current is correct for

0.2 A full load.

6. Replace the shorting device across the

load current input and remove the

ammeter. Reconnect polarity to the unit

and remove both jumpers. The LINE

DROP COMPENSATOR will be

activated. Correct CT polarity can be

checked by simply incorporating

sufficient +R compensation. The

regulator should time out and run so as

to raise the output voltage.

8 WARNING: In no case should the load current

circuit be interrupted with the regulator or

transformer energized.

Do not remove auxiliary current transformers

without shorting the current inputs.

Death or severe electrical shock can occur.

1 2 ... 16 17 18 19 20 21 22 23 24 25 26

Commentaires sur ces manuels

Pas de commentaire