Voltage Limiting Devices

  • Electrical isolation of insulated track sections and earthed parts of installations
  • Safe equipotential bonding in case of a short-circuit or earth fault at the overhead contact line due to high-current-resistant welding of the electrodes
  • Discharge of lightning overvoltages without short-circuit formation due to lightning-resistant SDS ... voltage limiting device
  • Short-circuit withstand capability up to 25 kArms / 100 ms; 36 kArms / 75 ms

Details

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SDS 1

Voltage limiting device for a power-frequency sparkover voltage ≤ 940 V.

1 Product

Part No. 923110 SDS 1

GTIN 4013364092426, Customs tariff No. (EU): 85369095, Gross weight: 47.80 g, PU: 10.00 pc(s)

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Technical data

VLD type (EN 50122-1) VLD-F
Power frequency sparkover voltage (Uaw ) ≤ 940 V
d.c. sparkover voltage (Uag ) 700 V -14% ... +28%
Impulse sparkover voltage ≤ 1400 V (1 kV/µs)
Self-extinguishing capability 300 A / 65 V
Lightning current discharge capacity (10/350 µs) 0.1x / 0.5x / 1x 5 kA
Lightning current withstand capability (10/350 µs) 100 kA
Safe short-circuit due to welding of the electrodes in case of alternating currents ≥ 2.5 kA / 1000 V / 30 ms, ≥ 1.5 kA / 1000 V / 100 ms
Safe short-circuit due to welding of the electrodes in case of direct currents ≥ 750 A / 250 ms
Short-circuit withstand capability 25 kArms / 100 ms; 36 kArms / 75 ms
Long-term current 1 kArms for t ≤ 120 s
Leakage current (Ilc ) < 1 µA for 100 V d.c.
Operating temperature range (TU ) -40 °C ... +80 °C
To be mounted with mast adapter MA SDS M12 or SIEMENS No. 8WL6503-xx
Approvals EBA
DB drawing No. 4 Ebs 15.13.20 Sheet 2

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SDS 2

Voltage limiting device for a d.c. sparkover voltage of 350 V.

1 Product

Part No. 923117 SDS 2

GTIN 4013364093478, Customs tariff No. (EU): 85369095, Gross weight: 43.40 g, PU: 10.00 pc(s)

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Technical data

VLD type (EN 50122-1) VLD-F
d.c. sparkover voltage (Uag ) 350 V +/- 20 %
Impulse sparkover voltage ≤ 900 V (1 kV/µs)
Lightning current discharge capacity (10/350 µs) 0.1x / 0.5x / 1x 2 kA
Lightning current withstand capability (10/350 µs) 25 kA
Safe short-circuit due to welding of the electrodes in case of direct currents ≥ 600 A / 250 ms
Short-circuit withstand capability 25 kArms / 100 ms; 36 kArms / 75 ms
Long-term current 1 kArms for t ≤ 120 s
Leakage current (Ilc ) < 1 µA for 100 V d.c.
Operating temperature range (TU ) -40 °C ... +80 °C
To be mounted with mast adapter MA SDS M12 or SIEMENS No. 8WL6503-xx

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SDS 3

Voltage limiting device for a d.c. sparkover voltage of 550 V.

1 Product

Part No. 923116 SDS 3

GTIN 4013364085978, Customs tariff No. (EU): 85369095, Gross weight: 43.40 g, PU: 10.00 pc(s)

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Technical data

VLD type (EN 50122-1) VLD-F
d.c. sparkover voltage (Uag ) 550 V +/- 20 % 
Impulse sparkover voltage ≤ 1000 V (1 kV/µs)
Lightning current discharge capacity (10/350 µs) 0.1x / 0.5x / 1x 2.5 kA
Lightning current withstand capability (10/350 µs) 25 kA
Short-circuit withstand capability 25 kArms / 100 ms
Operating temperature range (TU ) -40 °C ... +80 °C
To be mounted with mast adapter MA SDS M12 or SIEMENS Nr. 8WL6503-xx

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SDS 4

Voltage limiting device for a d.c. sparkover voltage of 230 V.

1 Product

Part No. 923118 SDS 4

GTIN 4013364104969, Customs tariff No. (EU): 85369095, Gross weight: 39.70 g, PU: 10.00 pc(s)

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Technical data

VLD type (EN 50122-1) VLD-F
d.c. sparkover voltage (Uag ) 230 V +/- 20%
Impulse sparkover voltage ≤ 650 V (1 kV/µs)
Lightning current discharge capacity (10/350 µs) 0.1x / 0.5x / 1x 2.5 kA
Lightning current withstand capability (10/350 µs) 25 kA
Impulse current discharge capacity (8/20 µs) 0.1x / 0.5x / 1x 20 kA
Safe short-circuit due to welding of the electrodes in case of direct currents ≥ 600 A / 250 ms
Short-circuit withstand capability 25 kArms / 100 ms; 36 kArms / 75 ms
Long-term current 1 kArms for t ≤ 120 s
Leakage current (Ilc ) < 1 µA for 100 V d.c.
Operating temperature range (TU ) -40 °C ... +80 °C
To be mounted with mast adapter MA SDS M12 or SIEMENS No. 8WL6503-xx

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SDS 5

Voltage limiting device for a d.c. sparkover voltage of 120 V.

1 Product

Part No. 923119 SDS 5

GTIN 4013364104976, Customs tariff No. (EU): 85369095, Gross weight: 39.70 g, PU: 10.00 pc(s)

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Technical data

VLD type (EN 50122-1) VLD-F
d.c. sparkover voltage (Uag ) 120 V +/- 20 %
Impulse sparkover voltage ≤ 600 V (1 kV/µs)
Lightning current discharge capacity (10/350 µs) 0.1x / 0.5x / 1x 2 kA
Lightning current withstand capability (10/350 µs) 25 kA
Impulse current discharge capacity (8/20 µs) 0.1x / 0.5x / 1x 20 kA
Safe short-circuit due to welding of the electrodes in case of direct currents ≥ 600 A / 250 ms
Short-circuit withstand capability 25 kArms / 100 ms; 36 kArms / 75 ms
Long-term current 1 kArms for t ≤ 120 s
Leakage current (Ilc ) < 1 µA for 100 V d.c.
Operating temperature range (TU ) -40 °C ... +80 °C
To be mounted with mast adapter MA SDS M12 or SIEMENS No. 8WL6503-xx

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