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Liaoning Jinli Electric Power Electrical Appliance Co.,Ltd

Three-phases on Load Tap Changer

Three-phases on Load Tap Changer

T hree-phases O n L oad T ap C hanger On-load tap changer apparatus of the type having two connection branches, each of which is connected between a common connection point and a separate movable contact, at least one branch having a resistor in series with the first contact device, and the...

Product Details

Three-phases On Load Tap Changer

On-load tap changer apparatus of the type having two connection branches, each of which is connected between a common connection point and a separate movable contact, at least one branch having a resistor in series with the first contact device, and the other branch including a vacuum element with a second contact device connected in parallel with the vacuum element in the second connection branch. Alternatively, the contacts of a change-over switch are connected to the two connection branches and a vacuum element is connected between the contacts of the change-over switch.

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Model Explanation
 SY□Z(Z) - □/□-□L
    S :  three-phase
    Y :  on load
    □:  voltage connection model
    Z :  adopting resistance transit
    Z :  direct switch
    □:  rated current
    □:  rated voltage
    □:  number of voltage regulation grades
    L :  online oil filter

Main Technical Data

Application Scope

Oil-immersed Distribution Transformer 

Connection Model

SYXZZ : three phase Y connection neutral point linear voltage regulation

SYJZZ : three phase central point bridge voltage regulation

SYTZZ : three phase any connection linear voltage regulation

Three-phase Max. Rated Current  

400A

Max. Rated Voltage

600V

Max. Voltage of Device Um

40.5KV

Max. Tap Positions

17 or others

Connection Model Shows as Following 

image002.png image004.png image006.png
(Y connection neutral point) (Y connection neutral point with lead wire) (Y connection central bridge point) 
image008.png image010.png image012.png
(D connection central bridge point) (D connection terminal point) (Auto type terminal point)

Sample Outline Dimension Diagram 

image014.png

Sample Model Parameters

Serial number

Model No.

(A)

Rated

current

(v)

Rated

voltage

Installation dimension(mm)

H

H1

H2

H3

Md

1

SYXZZ 50/10 -3~5

50

10

615

305

120

60

M8

2

SYXZZ 100/10-5~9

100

10

682

350

125

66

M8

3

SYJZZ 100/10-5~7

100

10

750

440

125

100

M8

4

SYJZZ 200/35-5~9

200

35

1500

190

170

715

M12

5

SYJZZ 300/35-5~9

300

35

1500

190

170

715

M14

6

SYJZZ 400/35-5~9

400

35

1700

220

235

910

M16

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