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SGA Surge arresters

SGA Surge arresters

Product catalog summary

Introduction
Ensto Finland Oy presents the SGA2024.10, SGA2327.10, and SGA1518.10 surge arresters, designed for reliable electricity distribution in Nordic climates. These devices are type tested according to the IEC60099-4:2004 standard and have undergone additional testing in Finland to ensure suitability for harsh conditions.

Specifications

SGA2024.10 and SGA2327.10: Designed for installation parallel to transformers or cable terminations. Continuous operating voltage (Uc) is 20 kV and 23 kV, respectively, with rated voltages (Ur) of 24 kV and 27 kV.
SGA1518.10: Serves as a spare part for current limiting devices in 20 kV networks. Not recommended for use in star-point isolated or compensated networks without an external spark gap. Continuous operating voltage is 15 kV, with a rated voltage of 18 kV.

Performance Parameters

All models have a nominal current of 10 kA.
Residual voltage with 8/20 μs current impulse varies across models, with SGA2024.10 at 72.6 kV (5 kA) and 79.1 kV (10 kA), SGA2327.10 at 81.7 kV (5 kA) and 88.9 kV (10 kA), and SGA1518.10 at 54.4 kV (5 kA) and 59.3 kV (10 kA).
Energy handling capacity is 2.8 kJ/kVUr for all models, classified as Class 1 under IEC 60099-4.

Physical Characteristics

SGA2024.10 and SGA2327.10 have a creepage distance of 884 mm and a length of 427 mm, weighing 3.8 kg and 3.6 kg, respectively.
SGA1518.10 has a creepage distance of 680 mm, a length of 345 mm, and weighs 2.7 kg.

Installation and Usage Recommendations

SGA2024.10 and SGA2327.10 should be installed parallel to the line and earth for optimal protection.
SGA1518.10 should not be used alone in certain network configurations without additional components.

Catalog excerpts

Saves Your Energy for fault free distribution of electricity

Open the catalog to page 1

Ensto’s surge arresters complete our reliable product solutions designed for fault free distribution of elecricity. The surge arresters have been developed to endure the vast temperature variations that are common in the Nordic countries. The SGA surge arresters have been designed and type tested according to IEC60099-4:2004 standard. Furthermore, Ensto has had additional tests made in Finland to ensure that the arresters fit the challenging Nordic conditions. SGA2024.10 and SGA2327.10 should be installed parallel (between the line and earth) to the transformer or cable terminations, or other...

Open the catalog to page 2

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