DRIESCHER MINEX® and G·I·S·E·L·A® One system, all possibilities.

DRIESCHER MINEX ® and G·I·S·E·L·A ® 

One system, all possibilities. 

SF6-insulated medium voltage switchgear 

in compact design, 

Rated voltage 12 - 40,5 kV. 

■ Maximum possible active 

and passive safety 

due to 

■ Minimum space require- 

LS 

ment due to compact 

VSS 

design 

■ High flexibility by standardized 

functional modules 

■ High breaking capacity 

■ High short circuit making 

capacity 

■ Switchgear extension 

anytime possible without 

any problem

Flexible as a matter of principle. 

With MINEX ® and G·I·S·E·L·A ® switchgear in compact design 

we offer an optimal solution for each requirement. 

The technology of the inventor of the first SF6-medium 

voltage switchgear. 

In the matter 

MINEX of SF6-medium 

voltage technology 

trust in the 

qualification of 

the inventor. 

Since 1978 

DRIESCHER 

constantly develops 

further in 

SF6-technology. 

® 1978 MINEX ® today 

There can be only one original: 

DRIESCHER SF6-technology since 1978

Special tasks require special 

solutions. 

Cable 

distribution cubicle 

(up to 36 kV) 

Fuse cabinet 

(12-24 kV) 

To find individual solutions for special tasks is a forte 

of DRIESCHER. Our engineers are experienced, to develop 

special designs according to customer requirements, 

where others have already ceased. 

The realization takes place in our flexible and highly contemporary 

manufacturing according to highest standards 

and in best quality. 

SF 6-insulated switchgear 

type G·I·S·E·L·A ® 

The SF6-insulated switchgear types G·I·S·E·L·A ® are identical 

in construction as the switchgear type MINEX ® , and 

have therefore the following advantages: 

■ SF6 as insulating- and quenching medium. The 

quenching arc takes place in separate, hermetically 

sealed arcing chambers. 

■ Pluggable connecting cones. An exchange of the 

connecting cones is possible without any problems 

also at site. 

The same data and constructions are valid as per the 

MINEX ® -switchgear. The only difference therein is, that at 

an internal arc the switchgear opens via a burst disc, and 

therefore the effects to the ambience are to be considered 

particularly. All G·I·S·E·L·A ® constructions are IAC-classified 

(20 kA / 1 s). This is also valid for the metering cubicles. 

For installation in substations of other makes or housings, 

the pressure resistance of the building has to be clarified 

with the respective manufacturer. 

By-pass unit 

Bus bar pick-off 

on right side 

(up to 24 kV)

1700 

Unlimited combination-possibilities due 

to modular construction of the cubicles. 

C 

≤ 24kV 

C 

≤ 24kV 

C 

≤ 36kV 

L1 

L2 L3 

C 

≤ 40,5kV 

L1 

L2 L3 

T 

≤ 24kV 

T 

≤ 36kV 

210 315 400 520 370 400 460 520 370 

L1 L2 

L3 

CB 

≤ 36kV 

CB 

≤ 40,5kV 

2 x 20 mm for the outer walls has to be added to the cubicle width per switchgear combination. 

C = cable cubicle, T = transformer cubicle, CB = circuit breaker cubicle, VSS = vacuum safety switch cubicle 

SF6 as insulating- and 

quenching medium 

The quenching arc takes place in separate, hermetically 

sealed arcing chambers. That means the quenching 

medium and the insulating medium are arranged in separate 

sections, independent from each other. The full 

switching capacity is always guaranteed. 

Pluggable cones with 

highest safety 

VSS 

≤ 24kV 

The cones for the cable connection or switchgear extension 

are made of reinforced cycloalyphatic exposy 

resin. An electrode for capacitive coupling is embedded 

in the epoxy resin, arranged in parallel to the live 

part of the bushing. By using high-quality exposy resins 

and latest cast-iron technology, a maximum possible 

safety is guaranteed regarding the insulation strength 

of the dielectric and the protection against accidental 

contacts.

Unlimited fields of application by IAC-classi 

12 kV-metering cubicle 

Metering cubicle with secondary protection 

According to drawing no. 

K61644 

W 742 mm x D 745 mm x H 1700 mm 

742 745 742 745 


Metering cubicle without secondary protection 


K61669 

W 742 mm x D 730 mm x H 1700 mm 

742 730 


Metering cubicle with relay box 


K61444 

W 742 mm x D 730 mm x H 1700 mm 

742 730 




K61649 

W 742 mm x D 745 mm x H 1300 mm 




K61667 

W 742 mm x D 730 mm x H 1300 mm 

742 730 


Metering cubicle with relay box 


K61665 

W 742 mm x D 730 mm x H 1300 mm 

742 730 

Arrangement of current transformers individual possible 




K61654 

W 942 mm x D 745 mm x H 1700 mm 

942 

942 745 




K61666 

W 942 mm x D 730 mm x H 1700 mm 

942 730 




K62167 

W 942 mm x D 1230 mm x H 1700 mm 

Front view without door 




K61648 

W 942 mm x D 745 mm x H 1300 mm 

942 745 




K61668 

W 942 mm x D 730 mm x H 1300 mm 

942 

650 

730 

12 kV-metering cubicle (K1824) 



HK56081–002 

W 650 mm x D 857 mm x H 1180 mm 

Front view 

without door

fied metering cubicles (20 kA / 1 s). 

Metering cubicles 

By employment of an air-insulated metering cubicle, 

the space necessary for an instrument transformer 

and / or a protection transformer is given. All metering 

cubicles in combination with a switchgear type 

MINEX ® are equipped with the ABS ® -system. 

Naturally all metering cubicles for switchgear type 

G·I·S·E·L·A ® are also IAC-classified (20 kA / 1 s). 

(Overview of the cubicles on request) 

Switchgear extension by linkage with cable 

plug-in connection 

Switchgear extension as an option is possible. Then 

the switchgear is equipped with external cone connections 

in the bus bar range, to connect the bus bars 

of the switchgear electrically. Therefore a combina- 

tion with a MINEX ® -F cubicle is possible. According 

to the design the coupling ensues with a sealing end 

kit or via the bus bar system of nkt.

Switchgear Data 

Cubicle type cubicle 

width (mm) 

cable cubicle 

≤ 24 kV 

cable cubicle 

≤ 24 kV 

cable cubicle 

≤ 36 kV 

cable cubicle 

≤ 40,5 kV 

transformer cubicle 

≤ 12 kV 


≤ 24 kV 


≤ 36 kV 

circuit breaker cubicle 

≤ 36 kV 

circuit breaker cubicle 

≤ 40,5 kV 

vacuum safety switch cubicle 

≤ 24 kV 

Technical Data 

cubicle 

depth (mm) 

MINEX ® -C 210 550 

MINEX ® / 

G·I·S·E·L·A ® 315 540 

cubicle 

height (mm) 

1300 

1700 

1300 

1700 

weight connection via switchgear extension 

(kg) straight 

connector 

elbow 

connector 

inside 

cone 

via screened bus bar 

ca. 90 • • 

ca. 100 • • 

MINEX ® / 

G·I·S·E·L·A ® 400 570 1700 ca. 130 • • 

MINEX ® 520 720 1900 ca. 160 • 

MINEX ® / 

G·I·S·E·L·A ® 370 570 

MINEX ® / 

G·I·S·E·L·A ® 370 720 

1300 

1700 

1300 

1700 

ca. 140 • • • • 

ca. 140 • • • • 

MINEX ® / 

G·I·S·E·L·A ® 400 870 1700 ca. 210 • • 

MINEX ® / 

G·I·S·E·L·A ® 460 952 1700 ca. 280 • • 

MINEX ® 520 952 1900 ca. 280 • 

MINEX ® / 

G·I·S·E·L·A ® 370 777 1700 ca. 150 • • • 

Cable cubicle / transformer cubicle Circuit breaker cubicle VSS 

Rated voltage ≤ 12 kV ≤ 24 kV ≤ 36 kV ≤ 40,5 kV ≤ 12 kV ≤ 24 kV ≤ 36 kV ≤ 40,5 kV ≤ 12 kV ≤ 24 kV 

Rated power frequency withstand voltage 28 kV 50 kV 70 kV 85 kV 28 kV 50 kV 70 kV 85 kV 28 kV 50 kV 

Rated lightning impulse withstand voltage 75 kV 125 kV 170 kV 185 kV 75 kV 125 kV 170 kV 185 kV 75 kV 125 kV 

Rated frequency 50 / 60 Hz 

Rated operating current of bus bar 630 A 

Rated operating current 630 / 200 A 630 / 200 A 630 / 200 A 630 A 630 A 630 A 630 A 630 A 630 A 630 A 

Rated short time current 20 kA (25 kA option) 

Rated peak current 50 kA (63 kA option) 

Rated short-circuit duration 1 s (3 s option) 

Rated short-circuit making current 50 kA (63 kA) 50 kA 50 kA 40 kA 50 kA (63 kA) 50 kA 50 kA 50 kA 63 kA 50 kA 

Rated short-circuit breaking current 20 kA (25 kA) 20 kA 20 kA 20 kA 25 kA 20 kA 

Rated mainly active load breaking current 630 A 630 A 630 A 630 A 

Rated closed loop breaking current 630 A 630 A 630 A 630 A 

Rated cable charging breaking current 25 A 25 A 20 A 20 A 50 A 50 A 50 A 50 A 50 A 50 A 

Rated overhead line breaking current 10 A 10 A 6 A 2,5 A 10 A 10 A 10 A 10 A 10 A 10 A 

Rated overhead line breaking current 

under earth-fault conditions 

300 A 300 A 300 A 300 A 

Rated operation sequence O-0,3 s-CO-15 s-CO 

Internal Arc Classification IAC AFLR 20 kA 1 s (IAC AFLR 25 kA / 1 s option) 

Ambient temperature -25 °C bis +60 °C

Often imitated but never equalled! 

The optimum of safety. 

Duration of internal fault 

1000ms 

With conventional 

burst disc 

In spite of passed internal 

arc test according to 

IEC 62271-200 

Risk for persons nearby 

the installation by toxic 

flue gas 

Material damages, reconstruction 

of building trough 

High pressure increase 

We reserve the right to alter the dimensions 

and technical information. 

Please contact us for more details. 

© Driescher-Wegberg 

With 

Duration of internal fault 

30ms 

considerably better as 

the standard requires 

No injury to persons 

No material damages 

No pressure increase to 

the station walls in case 

of an arc fault inside the 

gas compartment 

The reaction time 

makes the 

difference! 

The advantages of switchgear with 

ABS ® -system are the quick transformation 

of the arc fault into a galvanical 

short circuit. 

The reaction time is making the difference, 

because only few milliseconds 

decide on the effects of an internal 

arc in the installation. 

The DRIESCHER-ABS ® technique 

has been proved for more than 25 

years regarding safety and reliability. 

In case of an 

internal arc the 

preloaded 

earthing switch 

will be switched 

on via an 

integrated 

pressure sensor 

in the wall of the 

tank, in a time 

of 30 ms up to 

100 ms due to 

the current level. 

Fritz Driescher KG Spezialfabrik für Elektrizitätswerksbedarf GmbH & Co. 

Postfach 1193 · D-41837 Wegberg · Industriestr. 2 · D-41844 Wegberg 

Telefon +49 (0) 2434/81-1 · Telefax +49 (0) 2434/81446 

Internet: www.driescher-wegberg.de · E-Mail: info@driescher-wegberg.de 

C 13 1.0 W

DRIESCHER MINEX® and G·I·S·E·L·A® One system, all possibilities.

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