Oil-immersed Tap Changer manufacturers

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Lid geworden op: ma nov 18, 2019 8:38 am

Oil-immersed Tap Changer manufacturers

Bericht door astao193 » ma nov 18, 2019 8:41 am

Central Point On Load Tap Changer
On load Tap Changer (OLTC) is used with higher capacity transformers where HT side voltage variation is frequent and a nearly constant LT is required. OLTC is fitted with the transformer itself. Multiple tappings from HV windings are brought to the OLTC chamber and contacted to fixed contacts. Moving contacts rotates with the help of rotating mechanism having a spindle. This spindle can be rotated manually as well as electrically with a motor.
Motor is connected in such a way that it can rotate in both the directions so as to rotate the OLTC contacts in clockwise and antilock-wise direction. Two push buttons are fitted on the LCP (local control panel) to rotate the motor and hence the OLTC contacts in clockwise and anti-clockwise direction. This movement of contacts thus controls the output LV voltage of the transformer. So rotating of OLTC contacts with spindle or push buttons in this way is a manual process. In case this process of rotating the OLTC contacts and hence controlling the LV side voltage is to be done automatically then a RTCC (Remote Tap Changer Controller) is installed with the transformer HT Panel. The RTCC sends signals to LCP and LCP in turn rotates the motor as per the signals received from the RTCC
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
□ □ □
(Y connection neutral point) (Y connection neutral point with lead wire) (Y connection central bridge point)
□ □ □
(D connection central bridge point) (D connection terminal point) (Auto type terminal point)
Sample Outline Dimension Diagram

Sample Model Parameters
Serial number Model No. (A)
current (v)
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 Oil-immersed Tap Changer manufacturers
website:http://www.jinlielectricpower.com/on-lo ... p-changer/

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