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® | SPTM | SPTL |
| 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 |
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| 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 |
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| 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 |
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
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
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
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…
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® 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® 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® 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® 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® 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® 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
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