IN1/571/714
WSL
Head Motorized Off-Circuit Tap Changer
Operating instructions
HM 0.460.603
Shanghai Huaming Power Equipment Co.,Ltd.
Contents
1. General………………………………………………………………………………………………….
1
2. Technical data…………………………………………………………………………………………… 2
3. Structure…………………………………………………………………………………………………
2
4. Drying……………………………………………………………………………………………………
2
5. Appendix………………………………………………………………………………………………...
2
Figure 1 Basic connection diagram…………………………………………………………………..
3
Figure 2 Overall dimensions a ………………………………………………………………………..
4
Figure 3 Overall dimensions b ………………………………………………………………………..
5
Figure 4 Overall dimensions c ………………………………………………………………………… 6
Figure 5 Overall dimensions d ………………………………………………………………………… 7
Figure 6 Overall dimensions e ………………………………………………………………………… 8
Figure 7 Dimensions of transformer mounting flange a……………………………………………… 9
Figure 8 Dimensions of transformer mounting flange b …………………………………………….. 10
IN1/571/714
1. General
WSL head motorized off-circuit tap changer ˄hereinafter
referred as OCTC˅ is structured as cage shape and
non-oil chamber, which could be vertically mounted into
transformer tank.
!
1.1 Designation of model:
!!!M!!!ŕ!!!ŕ!0!ŕ!!!ŕ!!ġ!ŕ!!!C!!E
X!! ŕ!!
Head motorized
Contact diameter for special design
Number of operating position
Number of circle contacts
Highest voltage for equipment(kV)
Max.rated through current (A)
Connection code: linear IV, single-bridging V
Cage structure
Number of phase, S: 3-phase, D: 1-phase
Off-circuit
Table 1 Code of Connection
Connection
Linear regulation
Single-bridging regulation
Code
IV
V
Remark: Linear regulation is only application for neutral point of star connection, without neutral point
output terminal.
1.2 Application range
The max. current of the tap changer is 600A, the highest voltages for equipment are 12kV and 40.5kV,
It is divided to linear regulation at neutral point and single-bridging regulation at middle of winding, the
max. operation position is up to 13 for single-bridging regulation and 14 for linear regulation.
Warning: The tap changer can be operated for changing the tap of a winding only when the
transformer
is de-energized.
1
1
2. Technical data
For technical data please refer to table 2
3. Structure
This type off-circuit tap changer consists of gearing mechanism and body, gearing mechanism is on the
head of the tap changer, which can be mounted onto top cover of transformer tank; while the body,
structured as cage form and without oil compartment, can be mounted into transformer tank.
Characteristics:
(1) All gearing components are located inside the compartment above the flange, isolating from
transformer. Gearing components features as compact structure, small size, good appearance and
convenient for maintenance.
Note: The gearing mechanism compartment on the tap changer head should be fully filled with
transformer oil before putting into operation.
(2) WSLV and WSLIV series off-circuit tap changer can be affiliated with HMWK-1 controller that can
indicate the tap position and operate the tap changer manually by push button at control room.
(3) Clip contact structure, good heat dissipation, reliable contact and strong ability to withstand
short-circuit current.
(4) Reliable operation is secured further by electrical and mechanical limit protection.
(5) The control circuit of tap changer controller is interlocked with that of transformer, the power supply of
controller is disconnected when transformer is energized, and therefore, ensuring tap changer could
not operate in on-load condition.
(6) It is only suitable for standard tank mounting
4. Drying
4.1 Open the top cover of tap changer
4.2 Drying procedure: under standard atmospheric pressure, heat up the tap changer at a temperature
increasing rate of 10ć per hour until 110ć, and then keep drying with circulating hot air for 24 hours.
!!!!Appendix
5.
2
IN1/571/714
Table 2
Technical Data
WSL IV-600 & WSLV-600
Model
WDL IV-600 & WDLV-6001)
Max. rated through-current (A)
600
Phase
S for 3-phase, D for 1-phase
5 class: Ø 382, Ø456, Ø490, Ø 516, Ø576,
Contact diameter (mm)
Short-circuit withstand
current (kA)
please refer to operating instructions for details
Thermal stability (3s)
9
Dynamic stability
22.5
(peak value)
V-single-bridging regulation at middle of the winding
Connection code
IV-linear regulation at neutral point
Max. operation positions
Single-bridging regulation: 13; linear regulation: 14
Rated power frequency withstand voltage
ground
Insulation to
Highest voltage for equipment (kV)
(kV, 1min)
Rated lightning impulse withstand voltage
(kV, 1.2/50s)
Connection mode
phases
Rated lightning impulse
withstand voltage (kV,1.2/50s)
Internal
Insulation level
Rated power frequency
Between withstand voltage (kV, 1min)
12
40.5
35
85
75
200
V
IV
V
IV
35
18
85
35
75
35
200
75
Rated power frequency
2) Between withstand voltage (kV, 1min)
18
45
max. and Rated lightning impulse
min. tap withstand voltage (kV,1.2/50s)
35
105
10
10
30
30
Rated power frequency
3)Between
withstand voltage (kV, 1min)
adjacent
Rated lightning impulse
taps
withstand voltage (kV,1.2/50s)
Mechanical endurance
Drying
Type of controller
Power supply voltage for motor
and HMWK-1 controller
1)
Not less than 200,000 operations
Vapor: Max. 125ଇ Vacuum :Max.110ଇ
HMWK-1
380V/AC, 50Hz
The overall dimensions for single phase WDL OCTC will be submitted when ordering
2) & 3) Insulation data between Max. and Min. tap and adjacent taps is only for standard design, for special
B contact diameter OCTC, it will be offered when ordering.
3
Single bridging
5
6
4
2
8
6
4
2
6
4
1
3
5
3
2
8
6
1
3
5
7
1
10
8
6
4
2
7
5
2
4
3
12
10
8
6
4
2
10
9
1
14
12
10
8
6
4
2
12
7
1
3
5
7
9
11
2
5
4
3
4
12
13
10 11
3
14
9
8
7
1
3
5
7
9
11
13
1
6
2
10X9
11
8
10
5
8X7
6X5
9
6
1
3
5
7
9
1
8
7
1
2
6
4 3
5
14X13
12X11
Linear
5
6
5
4
3
2
1
7
6
4
8
7
6
5
4
3
2
1
1
3
2
10
9
8
7
6
5
4
3
2
1
8
5
1
4
3
2
8
10 11
9
8
12
7
1
6
2
5
4
12X12
3
9
7
10
6
1
5
4
2
3
10X10
8X8
6X6
12
11
10
9
8
7
6
5
4
3
2
1
6
14
13
12
11
10
9
8
7
6
5
4
3
2
1
12
11
10
9
8
7
13
14
1
2
6
5
4
3
14X14
Figure 1 Basic connection diagram
4
IN1/571/714
D-D
Single bridging 6X5(D)
/
/
/
/
D-D
Single bridging 8X7(D)
D-D
D-D
4
5
4
5
6
3
3
7
6
2
8
2
1
1
Linear 8X8(D)
Linera 6X6(D)
Rated voltage
L1
L2
L
12kV
102
195
558
40.5kV
179
280
797
WSLIV-600/12(40.5)-6X6D (8X8D)
WSLV-600/12(40.5)-6X5D (8X7D)
Figure 2 Overall dimensions a
5
D-D
Single bridging 8X7(BD)
/
/
/
/
D-D
Linear 8X8(BD)
Rated voltage
L1
L2
L
12kV
102
195
558
40.5kV
179
280
797
WSLIV-600/12(40.5)-8X8BD
WSLV-600/12(40.5)- 8X7BD
Figure 3 Overall dimensions b
6
IN1/571/714
D-D
Single bridging 10X9(D)
/
/
/
/
D-D
Linear 10X10(D)
Rated voltage
L1
L2
12kV
102
195
558
40.5kV
179
280
797
WSLIV-600/12(40.5)-10X10D
WSLV-600/12(40.5)-10X9D
Figure 4 Overall dimensions c
7
L
D-D
Single bridging 14X13(D)
D-D
Linear 14X14(D)
Linear 10X10(BD)
Single bridging 10X9(BD)
Rated voltage
L1
L2
L
12kV
102
195
558
40.5kV
179
280
797
WSLIV-600/12(40.5)-10X10BD (14X14D)
WSLV-600/12(40.5)-10X9BD (14X13D)
Figure 5 Overall dimensions d
8
IN1/571/714
D-D
Single bridging 12X11(D)
/
/
/
/
D-D
Linear 12X12(D)
Rated voltage
L1
L2
L
12kV
102
195
558
40.5kV
179
280
797
WLSIV-600/12(40.5)-12X12D
WSLV-600/12(40.5)-12X11D
Figure 6 Overall dimensions e
9
18-M12 uniformly distributed
WSLIV-600/12(40.5)-6X6D; 8X8D; 8X8BD; 10X10D
WSLV-600/12(40.5)-6X5D; 8X7D; 8X7BD; 10X9BD
Figure 7 Dimensions of transformer mounting flange a
10
IN1/571/714
18-M12 unifromly distributed
WSLIV-600/12(40.5)-10X10BD; 12X12D; 14X14D
WSLV-600/12(40.5)-10X 9BD; 12X11D; 14X13D
Figure 8 Dimensions of transformer mounting flange b
11
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