Shanghai Huaming Power Equipment Co., Ltd.

TYPE SY ZZOn-Load Tap Changer

Operation InstructionsHM0.460.531

Thank you for choosing our on-load tap changer!

Prior to operating the on-load tap changer, please be

sure to read carefully operating instructions delivered

with shipments.

Thanks!

CONTENTS

1

HMO.460.531

1. General

2

2. Technical Data of tap changer

3

HMO.460.531

4

3. Structure and operation principles

5

HMO.460.531

choosing only one signal voltage from above.

Tap position

Connecting with

Power supply

two phasesSignal voltages1)

Sig

nal

vo

ltag

e 1

00

V

Sig

nal

vo

ltag

e 4

00

V

1)Remark: Signal voltage 100V or 400V is sampled from PT,Remark: 1)

Blo

ckin

g I

nput

Ov

ercu

rren

t

CX4CX1

RS485 interface

signal processing

Motor drive

CX5

321

101112131415

987654321

1

2 2

2

2

3

2

4

CO

M

5

0

DA

TA

+

DA

TA

-

gro

und

Sig

nal

1 32 54 21 43 5 6 87 109 11 1312 1514 16

Op

erat

ion

pow

er s

ourc

e

Op

erat

ion

pow

er s

ourc

e

Tro

ub

le a

larm

ou

tpu

t

N-1

Sto

p

1-N co

m Remote signal input

CX2 CX3

To on-load tap changer

19

co

res

cab

le

tap position signal BCD code output

RS485 interface

CPU

AC/DC

sample voltage

Auto-adjusting of

and keyboard

LED display

1 2 3 4 5 6 7 8 9

Position

Tap positions signal outputCX5

com

Sig

nal

vo

ltag

e C

om

mon

ter

min

al

3AC 380V

6

4. Installation and commissioning of the tap changer

7

HMO.460.531

8

9

HMO.460.531

5. Operation and maintenance

10

6. Package and shipping

7. Supplements

11

HMO.460.531

12

13

HMO.460.531

14

15

HMO.460.531

16

17

HMO.460.531

No

tice

con

ne

ctio

n t

erm

inal

con

ne

ctio

n t

erm

ina

lcon

ne

ctio

n t

erm

ina

l

18

19

HMO.460.531

(D1)

(D2)

(D3)

20

21

HMO.460.531

Connecting with

321

inp

ut

in s

erie

ste

mper

ature

blo

ckin

g

101112131415

987654321

Ov

ercu

rren

t an

d l

ow

DC power for

position display only

L-

18V

L+

18

V

L-

18V

L+

18

V

1

2 2

2

2

3

2

4

CO

M

5

0

DA

TA

+

DA

TA

-

Sig

nal

gro

un

d

1 32 54 21 43 5 6 87 109 11 1312 1514 16

Op

erat

ion

po

wer

sourc

e

Op

erat

ion

po

wer

sourc

e

Tro

ub

le a

larm

ou

tpu

t

N-1

Sto

p

1-N co

m Remote signal input

CX2 CX3

To on-load tap changer

19 c

ore

s ca

ble

BCD code outputtap position signal

RS485 interface

Power supply

CPU

AC/DC

Auto-adjusting of

sample voltage

LED display

and keyboard

1 2 3 4 5 6 7 8 9

Position

Tap positions signal outputCX5

com

Sig

nal

volt

age

Com

mon

ter

min

al

Motor drive

signal processing

CX4CX1

RS485 interface

Choosing only one sample voltage from above.

Signal voltage 100V or 400V is sampled from PTRemark: 1)

Signal voltages

1) S

ign

al v

olt

age

100V

Sig

nal

vo

ltag

e 400V

two phases

Tap position

2)

2) Refer to operating instructions for details of DC power for position display.

3AC 380V

22

Su

pp

lem

ent

12

23

HMO.460.531

SHANGHAI HUAMING POWER EQUIPMENT CO.,LTD.Address: 977 Tong Pu Road, Shanghai, P.R.China 200333

Tel: +86 21 5270 3965 (direct)

+86 21 5270 8966 Ext.

8688/8123/8698/8158/8110/8658

Fax: +86 21 5270 2715

Web:www.huaming.com

E-mail: export@huaming.com