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: [email protected]