OL-DC 3-3150-40 load break switch / disconnector for 3 kV DC catenary
The OL-DC 3-3150-40 is a single-pole device for 3 kV DC railway catenary with a rated continuous current of 3150 A. It is produced as a disconnector (-ARC) and as a load break switch (-LBS). It is installed for catenary sectioning and at the feed from a traction substation.
- Rated voltage
- 3 kV DC (rated 3.6 kV, insulation 4.8 kV)
- Rated current
- 3150 A
- Short-time withstand
- 40 kA, ¼ s; Iss 40 kA, INss 57 kA
- Switching capacity
- 3150 A (LBS)
Price, availability and lead time on request. We help with analogue selection, customs clearance and delivery.
Description
The device connects and disconnects catenary sections, supplies power directly from a traction substation, and in a two-pole version also serves for parallel operation of contact wire sections. The choice between ARC and LBS depends on whether load current has to be switched or only a de-energised circuit has to be opened. The ARC variant performs the functions of a disconnector, while the LBS variant is a load break switch and makes and breaks 3150 A.
The nominal network voltage is 3 kV DC, the device rated voltage 3.6 kV DC, the rated insulation voltage 4.8 kV DC, overvoltage category OV4. The impulse test voltage is 40 kV (phase to earth) and 48 kV (across the gap), and the power frequency voltage 18.5 and 22.2 kV. Rated continuous current 3150 A, short-time withstand current 40 kA for ¼ s, short-circuit current Iss 40 kA, rated short-circuit current INss 57 kA. Utilisation category I for the disconnector and III for the load break switch. Switching endurance is at least 50 cycles at rated voltage and current.
The minimum clearance phase to earth is 251 mm, across the isolating gap 270 mm, creepage distance about 394 mm, pollution degree PD4A. Dimensions of the ARC are 764×300×530 mm and of the LBS 1193×300×530 mm, mass about 27 and 28 kg. Stroke 180/200 mm, operating force about 450/500 N, recommended drive torque about 250 N·m, drives UM90 and UMPlus are suitable. The drive is central, optionally lateral, and the connection is made by rod or Flexball. The LBS has a quick-break mechanism. An auxiliary switch with up to 8 contacts is housed in an IP65 aluminium enclosure.
The current-carrying parts are made of electrical copper, with silver-plated contacts. Mounting is horizontal, on pole heads. The device is designed for ice loads up to 10 mm (class 10 to EN 62271-102), corrosivity category C3 high (EN ISO 14713), temperature −25…+40 °C and wind up to 34 m/s. It complies with EN 50123-1 / IEC 61992-1, EN 50123-4 / IEC 61992-4 and EN 50329 (load cycles A and B, class VI).
Technical specifications
| Rated voltage | 3 kV DC (rated 3.6 kV, insulation 4.8 kV) |
|---|---|
| Rated current | 3150 A |
| Short-time withstand | 40 kA, ¼ s; Iss 40 kA, INss 57 kA |
| Switching capacity | 3150 A (LBS) |
| Insulation | 40/48 kV impulse; 18.5/22.2 kV power frequency |
| Category | I (ARC), III (LBS) |
| Mass | about 27–28 kg |
| Conditions | ice 10 mm, C3 high, −25…+40 °C, wind 34 m/s |
| Standards | EN 50123-1/-4, EN 50329, EN 62271-102 |
Request a price and lead time
OL-DC 3-3150-40 load break switch / disconnector for 3 kV DC catenary. We reply within one business day.
Or email sales@usk.ua or call 044 339-50-20.
Questions and answers
What rated current and voltage does the OL-DC 3-3150-40 have?
Rated continuous current is 3150 A at a network voltage of 3 kV DC. The device rated voltage is 3.6 kV DC and the insulation voltage 4.8 kV DC.
How do the ARC and LBS variants differ?
The ARC is a disconnector of utilisation category I, dimensions 764×300×530 mm, mass about 27 kg. The LBS is a load break switch of category III that makes and breaks 3150 A, dimensions 1193×300×530 mm, mass about 28 kg.
What climatic conditions is the device designed for?
Ice up to 10 mm (class 10 to EN 62271-102), wind up to 34 m/s, temperature from −25 to +40 °C. Corrosivity category C3 high to EN ISO 14713.
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