HV

subs

tatio

nsCurrent transformer shorting device

Function

Advantages

This device ensures: • The protection of persons working within the HV measuring circuits • The protection of the HV systems

Within the measuring circuits, this device provides the short-circuiting of CT secondary circuits, thus ensuring the protection of operative personnel. This operation is required before any servicing work or opening of circuits if the primaries are live.In protection circuits, the short-circuiting device protects HV installations by preventing potential increases in voltage from induction by fixing the common point to the earth potential.

Improved safetyThe short-circuiting device is made from a 4-pole SIDER visible load break switch (see the SOCOMEC general catalogue), mounted in an isolating housing with a transparent cover. The operator can see the device’s operating status before any servicing work or during preventive checks. The positions “SHORT-CIRCUIT CURRENT” (position I, switch off) and “NO SHORT-CIRCUIT CURRENT” (position 0, switch on) are marked on the external side-operation plate. An auxiliary NO+NC contact can signal the switch’s position, used for a control circuit.

Easy to installThe CT short-circuiting device is easy to install with its threaded rods, included on the plate. It can be mounted onto the plate itself, in a panel or on a chassis.

Easy wiringThe connection is carried out by integrated bolts (intended for one or multiple 6 mm² cables with lugs), and by 6.35 mm Faston connectors for the auxiliary contact. A clear, to-scale diagram is screen-printed on the transparent cap, to make it easy to identify terminals and positions.

Turnkey solutionThe short-circuiting devices are delivered assembled. They are ready to be installed on delivery.

> High voltage substation

The solution for

> Improved safety > Easy to install > Easy wiring > Turnkey solution

Strong points

> EDF-CERT D6100-06-76-86/23a

> HN 46-R-01 > IEC 60947-3

Compliance with standards

dp_0

02_a

dp_0

02_a

Current transformer shorting device

dp_0

48_a

dp_0

49_a

Rating (A) Reference

80 A 2935 0001Nominal current 80 A

Rated short-time withstand current (kA peak) 12

Rated short-time withstand current 1s Icw (kA rms) 2.5

Rated short circuit making capacity (kA peak) 4.5

Number of electrical operations 2500 power factor = 0.7 / 200 power factor = 0.35

Number of mechanical operations 20000

Aux. contacts’ breaking capacity 16 A – 250 VAC – power factor = 0.4

Global resistance of one pole (± 10%) 3.75.10-4 Ω

Pole discrepancy (snap opening and closing) T < 2.5 ms

References

Electrical diagram

Dimensions

Characteristics

N A B C

T

S2 S2 S2

S1S1S1

3 1

24

N A

5756

57135

10011 24 45

14

170

37 89

14

48 x 15

A B C

B C

S2 S2 S2

S1S1S1

52 Catalogue 2018-2019

HV

subs

tatio

ns

Current transformer shorting device

Function

Advantages

This device ensures: • The protection of persons working within the HV measuring circuits • The protection of the HV systems

Within the measuring circuits, this device provides the short-circuiting of CT secondary circuits, thus ensuring the protection of operative personnel. This operation is required before any servicing work or opening of circuits if the primaries are live.In protection circuits, the short-circuiting device protects HV installations by preventing potential increases in voltage from induction by fixing the common point to the earth potential.

Improved safetyThe short-circuiting device is made from a 4-pole SIDER visible load break switch (see the SOCOMEC general catalogue), mounted in an isolating housing with a transparent cover. The operator can see the device’s operating status before any servicing work or during preventive checks. The positions “SHORT-CIRCUIT CURRENT” (position I, switch off) and “NO SHORT-CIRCUIT CURRENT” (position 0, switch on) are marked on the external side-operation plate. An auxiliary NO+NC contact can signal the switch’s position, used for a control circuit.

Easy to installThe CT short-circuiting device is easy to install with its threaded rods, included on the plate. It can be mounted onto the plate itself, in a panel or on a chassis.

Easy wiringThe connection is carried out by integrated bolts (intended for one or multiple 6 mm² cables with lugs), and by 6.35 mm Faston connectors for the auxiliary contact. A clear, to-scale diagram is screen-printed on the transparent cap, to make it easy to identify terminals and positions.

Turnkey solutionThe short-circuiting devices are delivered assembled. They are ready to be installed on delivery.

> High voltage substation

The solution for

> Improved safety > Easy to install > Easy wiring > Turnkey solution

Strong points

> EDF-CERT D6100-06-76-86/23a

> HN 46-R-01 > IEC 60947-3

Compliance with standards

dp_0

02_a

dp_0

02_a

Current transformer shorting device

dp_0

48_a

dp_0

49_a

Rating (A) Reference

80 A 2935 0001Nominal current 80 A

Rated short-time withstand current (kA peak) 12

Rated short-time withstand current 1s Icw (kA rms) 2.5

Rated short circuit making capacity (kA peak) 4.5

Number of electrical operations 2500 power factor = 0.7 / 200 power factor = 0.35

Number of mechanical operations 20000

Aux. contacts’ breaking capacity 16 A – 250 VAC – power factor = 0.4

Global resistance of one pole (± 10%) 3.75.10-4 Ω

Pole discrepancy (snap opening and closing) T < 2.5 ms

References

Electrical diagram

Dimensions

Characteristics

N A B C

T

S2 S2 S2

S1S1S1

3 1

24

N A

5756

57

135

10011 24 45

14

170

37 89

14

48 x 15

A B C

B C

S2 S2 S2

S1S1S1

53Catalogue 2018-2019