Low Voltage Surge Arresters

Product catalog summary

Overview
The document provides detailed information on Low Voltage Surge Arrestors, including their specifications, features, and technical data. These devices are designed to protect electrical equipment from overvoltage caused by various factors such as switching operations, earth faults, short circuits, or atmospheric discharges.

Specifications
Surge arrestors are available in both insulated and non-insulated versions, suitable for different mounting types and terminals. They are equipped with metal-oxide varistors housed in robust, aging-resistant ceramic. The devices respond within nanoseconds, ensuring high surge protection with low residual voltages.

Features

Available with or without the "Rope-throwing-off-function" which prevents uncontrolled line drops.
High current carrying capacity, particularly the 10 kA type, reduces service and maintenance costs.
Compact, waterproof, and weather-resistant design.

Technical Data

Nominal discharge current options: 5 kA and 10 kA.
Maximum continuous operating voltage: 280V and 500V.
Maximum discharge current: 25 kA.
Residual voltage and voltage protection levels are specified for both with and without earth connection.
Standby power consumption is noted for different models.

Connection and Mounting
The surge arrestors can be connected using screw bolts and are available with insulated and flexible copper connection cables. Mounting is facilitated by stainless steel clamps, and various connection possibilities are provided, including conductor bunches with sleeves and cable lugs.

Standards and Compliance
The devices comply with IEC 61643-1, EN 61643-11, and VDE 0675 standards, ensuring reliability and safety in their operation.

Conclusion
Low Voltage Surge Arrestors offer robust protection for electrical systems, with options tailored to different operational needs and environments. Their design and technical specifications ensure effective performance and compliance with international standards.

Catalog excerpts

Safety wherever needed Low Voltage Surge Arrestors Uninsulated version Isolated version Rope-throwing-off-function

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MM: Bild angeben NA Content Low Voltage Surge Arresters 350 Technical data see page 351 Features Surge arrestors are available as insulated and noninsulated versions for various mounting types and terminals. Triggered surge arrestors can easily be identified by the catch cable. System The Low Voltage Surge Arrestors are equipped with metal-oxide varistors in a robust and aging-resistant ceramic housing. The devices respond within nanoseconds and with low residual voltages. This ensures a high level of surge protection. Rope-throwing-off-function Insulated terminal

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350 IN THE LINE OF POWER Technical adaptations possible • Recommended retail price plus VAT • Date: 01.02.2011 Accessories NA Current cable fitting and prevailling accessories for overhead lines and conductor bars. 69500-0010 Accessories 69841-0150 Low Voltage Surge Arrestors, with „Rope-throwing-off-function“ Properties: - With "Rope-throwing-off-function" - 10kA Low Voltage Surge Arresters For more information see page 351 69611-0040 Low Voltage Surge Arrestors, without „Rope-throwing-off-function“ Properties: - Without "Rope-throwing-off-function" Description Connection possibilities Length...

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351 IN THE LINE OF POWER NA Technical adaptations possible Low Voltage Surge Arresters Technical data Function mode • Protection of electrical equipment against overvoltage. • Overvoltages may result from switching operations, earth faults and short circuits or atmospheric discharges. • With overvoltage, the non-linear resistance lowers in such a way, that the overvoltage is restricted. • Secondary currents are suppressed by the rapidly increasing resistance. • The metal oxide varistor with a very high resistance at given operating voltage, responses quickly and does not require any discharging...

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352 IN THE LINE OF POWER Product description Low Voltage Surge Arresters Technical data Technical data • Metal oxide varistor embedded in ceramic insulator. • Threaded terminal end (screw bolts). • Mounting angle with clamp, made of stainless steel. • Current cable fittings and prevailing accessories for overhead lines and conductor bars. • Insulated, the flexible connecting line (copper) 6 mm2 can be chosen either with or without conductor bunch with sleeve. • The signal colour “yellow” helps to clearly identify a released overvoltage arrester. • The “rope-throwing-off-function” prevents – by...

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353 IN THE LINE OF POWER NA Connection with screw bolt Insulated type with “rope-throwing-off-function” Low Voltage Surge Arresters Dimensions drawings Mounting angle with clamp, made from stainless steel Connection possibilities Insulated and flexible connection cable (copper), 6 mm2, available either prepared or unprepared Uninsulated type Insulated line (multiwire) 6 mm2 insulating cap Insulated line (multiwire) 6 mm2 Insulated line (multiwire) 6 mm2 Conductor bunch with sleeve Cable lug M10 Copper/aluminium-sleeve Unprepared Technical adaptations possible

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Low Voltage Surge Arresters

Low Voltage Surge Arresters

Catalog excerpts

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