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Liaoning
Long-term effective
2018-01-03 13:20
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Company Profile
Liaoning Jinli Electric Power Electrical Appliance Co.,LtdBy certification [File Integrity]
Contact:lnjldl(Mr.)
Email:
Telephone:
Phone:
Area:Liaoning
Address:Liaoning
Website:http://www.jinlielectricpower.com/ http://lnjldl.sxcxty.com/
On Load Tap-Changer
Tap changers exist in two primary types, no load tap changers (NLTC) which must be de-energized before the turn ratio is adjusted and on load tap changers (OLTC) which may adjust their turn ratio during operation. The tap selection on any tap changer may be made via an automatic system, as is often the case for OLTC, or a manual tap changer, which is more common for NLTC. Additionally, tap changers are often placed on the high voltage (low current) transformer winding for easy access and to minimize the current load during operation.
For many power transformer applications, a supply interruption during a tap change is unacceptable, and the transformer is often fitted with a more expensive and complex on load tap changing (OLTC, sometimes Load Tap Changer, LTC) mechanism. On load tap changers may be generally classified as either mechanical, electronically assisted, or fully electronic.
An On load tap changer (OLTC), also known as under- load tap changer (ULTC). Tap changers typically use numerous tap selector switches which may not be switched under load, broken into even and odd banks, and switch between the banks with a heavy-duty diverter switch which can switch between them under load. The result operates like a dual-clutch transmission, with the tap selector switches taking the place of the gearbox and the diverter switch taking the place of the clutch.
These transformer tap-changers are applying to such oil-immersed power transformer of 50Hz, under 35KV rated voltage and 400A rated current. Online oil filter function will extend the service life and maintenance time of tap changer.
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) 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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