De-Energized Tap-Changers

Linear and rotating de-energized tap-changers for a broad range of applications

De-energized tap-changers are used to adjust the voltage setting of oil transformers. Unlike on-load tap-changers, the adjustment of the desired winding tap must take place with the transformer turned off.

We offer a wide range of de-energized tap-changer products for distribution transformers, transformers in extra-high-voltage grids and special applications.

DEETAP® DU® SPT Model 025 SPT Model 030
Max. rated through-current 2000 A standard design
4000 A special design
600 A 800 A
Number of phases I / III I / III I / III
Highest voltage for equipment Um 36 - 245 kV standard design
36 - 550 kV special design
72,5 - 170 kV 72,5 - 245 kV

Switching concepts e.g. Single-bridging DETC, double-bridging DETC, series-parallel DETC, star-delta DETC, DETC for special applications
Number of positions contact circle diameter 400 mm: max. 5
contact circle diameter 600 mm: max. 11
contact circle diameter 850 mm: max. 17
max. 11
max. 20 special design
max. 9
max. 20 special design

 

COMTAP ARS
Max. rated through-current (1-phase) 2400 A*
Max. rated through-current (3-phase) 1800 A*
Highest voltage for equipment Um 123 - 170 kV

For reversing the polarity of a winding during transformer operation
Number of positions 2 standard design
3** special design

 

* current splitting required
** available for 1000 A variant

Distribution Transformers

CAPT® 010 020 040
Type Linear Linear Linear
Voltage class 24 kV, 36 kV, 52 kV, 72,5 kV 24 kV, 36 kV, 52 kV, 72,5 kV 24 kV, 36 kV, 52 kV, 72,5 kV
Rated current 120 A - 600 A 120 A - 600 A 800 A - 1500 A
Number of positions 2 - 9 2 - 11 (up to 20 positions for special applications) 2 - 9 (up to 20 positions for special applications)
Available connections bridge, linear, star, series/parallel, star/delta bridge, linear, star, series/parallel, star/delta bridge, linear, series/parallel
Drive direct manual drive direct manual drive, CAPT® control MDU direct manual drive, CAPT® control MDU

 

CAPT® 090 095 096 099 085 086
Type Linear Linear Linear Linear cable type Rotary Rotary
Voltage class 24 kV, 36 kV 15 kV - 36 kV 24 kV, 36 kV 24 kV, 36 kV 24 kV 24 kV, 36 kV
Rated current 10 A - 65 A 30 A - 200 A 30 A - 200 A 30 A - 200 A 100 A 150 A - 300 A
Number of positions 2 - 7 2 - 11 2 - 7 2 - 7 2 - 6 2 - 7
Available connections bridge, linear, star, series/parallel, change voltage bridge, linear, star, series/parallel, change voltage bridge, linear, star, series/parallel, change voltage bridge, linear, series/parallel, change voltage bridge bridge
Drive direct manual drive direct manual drive direct manual drive direct manual drive direct manual drive direct manual drive

 

TAPMOTION® DD

If you are looking for uncompromising quality and reliability in a manual drive unit, the TAPMOTION® DD is your choice. It offers you decades of…

DEETAP® DU

DEETAP® DU is a rotating de-energized tap-changer for adjusting the voltage of oil-insulated transformers up to maximum power ranges. Unlike on-load…
+ Due to its modularity, DEETAP® DU is the ideal de-energized tap-changer for all applications, including as a cost-effective alternative to on-load tap-changers and heavy-duty applications such as those in phase shifter transformers
+ Testing beyond standards for all products in MR's one-of-a-kind tap-changer test laboratory
+ Consulting and engineering – Excellent consultation for the selection and design of on-load tap-changers

DEETAP® SPT

DEETAP® SPT is a product family of compact linear de-energized tap-changer for small power transformers, perfectly suited for installation on the…
+ Intelligent designs support compact power transformer dimensions and reduce the required installation space
+ Testing beyond standards for all products in MR's one-of-a-kind tap-changer test laboratory
+ Consulting and engineering – Excellent consultation for the selection and design of on-load tap-changers

COMTAP ARS

COMTAP ARS is an advanced retard switch with two operating positions that is specifically used to reverse the polarity of windings in applications…
+ Economic solution for applications with large regulating ranges
+ Testing beyond standards for all products in MR's one-of-a-kind tap-changer test laboratory
+ Consulting and engineering – Excellent consultation for the selection and design of on-load tap-changers

CAPT® 085

CAPT® 085 is designed to withstand a maximum current of 100 A and voltage of 24 kV, it is available in two different dimensions – with a total length…
+ Rotary-type tap changer suitable for rated current up to 100 A, voltage up to 24 kV
+ Easy assembly in British Standard design
+ Adjustable shaft length

CAPT® 086

CAPT® 086 is available on multiple configurations on the rotary-type design. It can withstand a rated current from 150 A up to 300 A thanks to the…
+ Rotary-type tap changer for rated current up to 300 A, voltage up to 36 kV
+ Easy assembly in British Standard design
+ Adjustable shaft length

CAPT® 090

Only 5 components to be assembled by the customer and multiple connections available: CAPT® 090 is a really smart and flexible solution for…
+ Compact size, high performance
+ Easy installation, low weight
+ Only 5 components to be assembled by the customer

CAPT® 095

CAPT® 095 is a flexible product with many variants. All the external parts are made of stainless steel to prevent oxidation; the stuffing box has to…
+ Solid design, adjustable upon request
+ Robust bakelite bars
+ External accessories in stainless steel

CAPT® 096

CAPT® 096 has a modular designed: the drive shaft is available in two different lengths – 91 mm or 131 mm; contacts are available in different…
+ Modular design
+ Two shaft lengths available
+ Innerwing in aluminum casting

CAPT® 099

CAPT® 099 is extremely flexible to install thanks to the cable application. Not only the tap changer can be installed horizontally on the top part of…
+ Cable type tap changer
+ Extremely flexible installation
+ Space saving in the transformer tank is allowed by the cable application

CAPT® 010

The CAPT® 010 tap changers have a direct drive equipment at one side of the tap changer. The change of position is allowed by an angular movement for…
+ Compact size, high performance
+ Direct handle, shaft at side
+ Stuffing box to be welded separately to the transformer tank

CAPT® 020

The CAPT® 020 series with up to 11 positions for standard applications can be rotated by the drive shaft that can be placed at one side or between the…
+ Direct and remote control available
+ Customizable shaft length
+ Microswitches for positioning monitoring available

CAPT® 040

The tap changers from CAPT® 040 series are specifically designed to withstand a high rating of current and voltage up to 1.500 A. Multiple…
+ Resistant structure, solid design
+ Direct and remote control available
+ Microswitches for positioning monitoring available

CAPT® Motor Drive Unit

This Motor Drive Unit is applicable to CAPT® 020, 040 and the SPT series. It is available for 400 V, 50/60 Hz and it is provided with standard paint…
+ Self breaking motor
+ Operation counter
Show more
contact
Contact