On-load Tap-changer

Product Detail

On-load Tap-Changer
 A tap-changer is a mechanism in transformers which allows for variable turn ratios to be selected in discrete steps. Transformers with this mechanism obtain this variable turn ratio by connecting to a number of access points known as taps along either the primary or secondary winding. These systems usually possess 33 taps (one at center "Rated" tap and sixteen to increase and decrease the turn ratio) and allow for ±10% variation (each step providing 0.625% variation) from the nominal transformer rating which, in turn, allows for stepped voltage regulation of the output.

The uniformly designed transformer oil filter on load tap changer has got the advantages of advanced structure. Oil filter on load tap selector has reliable operation, long service life and convenient maintain etc. 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.

Liaoning Jinli Electric Power Electrical Appliance Co., Ltd was founded in 1986. It is one of the leading companies that specialized in producing transformer accessories, such as off circuit tap changer, on load tap changer, temperature controller, pressure release valve etc. It well sells at Chinese domestic and abroad market such as Australia?New Zealand?Canada?Indonesia Peru and so on.

After more than 30 years development, the company has been strong in technical resource, and has accumulated rich experience of systematic design and practice and also established integrated product series.

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