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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