off-Circuit Pipe-Type Tap Changer

Model NO.: drum type/ tube type Phase: Three Cooling Method: Oil-immersed Type Transformer Application 1: Large or Medium Oil-Immersed Power Transformer Application 3: Transformers for Specially Used Suitable Oil Tank Type: Flat Type or Bell-Type Applied Oil Tank Rated Current: up to 2000A and Below Structure: Reliable Equipped with Solid Construct Trademark: VILLE HS Code: 85 Application: Power, Electronic, Instrument Core: Core-type Transformer Winding Type: Two-winding Transformer Application 2: Full Hermetically Transformer Applied Tranformer Frequency: Normally on 50 Hz or 60 Hz Applied Oil Tank Rated Voltage: up to 220kv and Below Appearance: Simple and Lively Performance: Light Moment, Turn Over Tap Position Clearly Origin: Ningbo Introduction

This is an new three-phase tube-type tap changer. It is combined by the body of tap changer and an operating turning framework, when the transformer is under non-energized state, we can turn over the tap position to change transformer ratio and stabilize output voltage. This single phase and "1+2" phase tube-type tap changer are suitable for installation on vertical direction, but the three-phase tube-type product is suitable for vertical or horizontal installation.

Application
These series of products are specially designed for large or medium oil-immersed power transformer, full hermetically transformer or transformers for specially used, they are frequency normally on 50 Hz or 60 Hz, and suitable for flat type or bell-type oil tank, its rated voltage is up to 220kV and below, rated current up to 2000A and below.

Technical Features
1) Simple and lively appearance, reliable structure equipped with solid construct pieces.
2) Light moment, turn over tap position clearly.
3) Design features: Body pieces are restricted each other and functioned each other. You can change the tap position freely and exactly, compared with the same type of products, it has obvious superiority.
4) No conductors and switch cover being equipped on the outer body of product. This is a full hermetically outer insulation screen which can withstand high voltage impulse, so no puncture discharge will rise between the narrow gaps, even if the air gap of the tap changer is very near the achieve body of the transformer.
5) The inner constructure of the tube-- type tap changer can be drawn out as a whole part, this helps to installation and maintenance.
6) It owned a certain of national patents right protection.

Main performance  parameter		Insulation Leve (kV)						Sealing performance (Pa/24h)	Machine Life(Ten thousand times)	Rated through current (A)	Heat Stableness current (kA/2s)	Dynamic stableness current (kA)
		Line-frequency ( 1 min )			( 1.2/50 μs)
Voltage class (Kv)	Wiring mode	To ground	Inter phase	Inter contactor	To ground	Interphase	Intercontactor
10	Y	48	48	48	150	115	85	6×10 4	2	250	5	12.5
										400	6	15
	Delta	48	48	18	150	150	85			500	7.5	13.75
35	Y	100	48	30	230	150	95			630	9.45	23.6
	Delta	100	100	30	230	230	95			800	9.73	24.3
66	Y	160	100	30	350	230	160			1000	10	25
	Delta	160	160	45	350	350	150			1250	12.5	31.25
110	Y	230	160	45	480	350	150			1600	16	40
	Delta	230	230	55	480	480	175			2000	20	50
220		460	*260/400	90	1100	1100	285			2500	25	62.5
										3000	30	75

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Product Categories : Transformer Spare Parts > Transformer Tap Changer