Email:i-trade1@lnjldq.com Liaoning Jinli Electric Power Electrical Appliance Co.,Ltd

Liaoning Jinli Electric Power Electrical Appliance Co.,Ltd

Oil Filter Three-phases Tap Changer

Oil Filter Three-phases Tap Changer

Oil Filter T hree-phases T ap C hanger On-Load Tap-Changers (OLTCs) are devices which permit the change of the turn ratios of transformers, allowing voltage regulation or phase shifting under load without interruption. Power transformers equipped with OLTCs have been main components of...

Product Details

Oil Filter Three-phases Tap Changer

On-Load Tap-Changers (OLTCs) are devices which permit the change of the turn ratios of transformers, allowing voltage regulation or phase shifting under load without interruption. Power transformers equipped with OLTCs have been main components of electrical networks and industrial applications for nearly 80 years. One crucial criterion for the selection of an adequate OLTC for a certain transformer or application is its insulation level. Generally, the dielectric strength depends on the whole system, i.e. the transformer, as well as the connection-leads and the OLTC. However, usual test-procedures by OLTC manufacturers are not done within a transformer but on a separate OLTC. Also during design the influence of leads and windings on the internal OLTC insulation is usually neglected. This gives rise to further investigations justifying this approach. Therefore, a typical system is simulated by computing the electric field and breakdown voltages with and without windings and tap leads.

Liaoning Jinli Electric Power Electrical Appliance Co., Ltd locates in Tongxing Industrial Park in Dandong city with great geographical location and convenient transportation which is facing the democratic people's republic of Korea across the river. The company's total investment is 150 million Yuan and the annual output value is more than 70 million Yuan.

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.pngimage004.pngimage006.png
(Y connection neutral point)(Y connection neutral point with lead wire)(Y connection central bridge point) 
image008.pngimage010.pngimage012.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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