DEHNguard® S ... VA

Pluggable single-pole Varistor-based Arrester

Multi-purpose surge arrester consisting of a base part and plug-in protection module Leakage-current-free series connection of a varistor and a spark gap in the pluggable protection module High reliability due to "Thermo Dynamic Control" SPD monitoring device Energy coordination with other arresters of the Red/Line product family Easy replacement of protection modules without tools due to module locking system with module release button Narrow (modular) design according to DIN 43880 Multifunctional terminal for connecting conductors and busbars

Version

DEHNguard S ... VA: Modular single-pole surge arrester with a varistor connected in series with a spark gap in the pluggable protection module

DEHNguard S ... VA FM: Modular single-pole surge arrester with a varistor connected in series with a spark gap in the pluggable protection module; with remote signalling contact for monitoring device (floating changeover contact)

Details

The single-pole DEHNguard S ... VA surge arresters are an ideal supplement to the proven DEHNguard product families. The special series connection of a spark gap and a varistor in the protection module opens up new fields of application. It is advisable to use DEHNguard S ... VA devices to protect, for example, systems with permanent insulation monitoring and the traction power lines in railway systems where complete absence of leakage currents is required. DEHNguard S ... VA surge arresters are also suited for protecting power line communication systems.

Multifunctional terminals allow almost unlimited flexibility in terms of connection to one another, but also to other DIN rail mounted devices in the distribution board. However, it is not only flexibility that characterises the DEHNguard S ... VA family. Its distinctive performance parameters set standards worldwide:

A high discharge capacity, complete absence of leakage currents, a low voltage protection level and the dual "Thermo Dynamic Control" monitoring and disconnection device describe the high degree of reliability.

The DEHN-specific "Thermo Dynamic Control" disconnector ensures that the arresters enter a safe and isolated state, even in case of extreme overload. For this purpose, the surface temperature of the heavy-duty varistor and the intensity of the discharge current are used for evaluation. In addition to the standard visual indication with red and green indicator flags, the DEHNguard S VA ... FM devices feature a three-pole remote signalling terminal. With its floating changeover contact, the remote signal can be used as break or make contact according to the particular protection concept.

Specification

Type DG S 75 VA DG S 275 VA DG S 385 VA
Part No. 952 080 952 082 952 084
SPD according to EN 61643-11 / IEC 61643-11 type 2 / class II type 2 / class II type 2 / class II
Nominal a.c. voltage (UN) 60 V (50 / 60 Hz) 230 V (50 / 60 Hz) 230 V (50 / 60 Hz)
Max. continuous operating a.c. voltage (UC) 75 V (50 / 60 Hz) 275 V (50 / 60 Hz) 385 V (50 / 60 Hz)
Max. continuous operating d.c. voltage (UC) 100 V 350 V 500 V
Nominal discharge current (8/20 µs) (In) 10 kA 10 kA 10 kA
Maximum discharge current (8/20 µs) (Imax) 20 kA 20 kA 20 kA
Voltage protection level (UP) ≤ 1.1 kV ≤ 1.5 kV ≤ 1.75 kV
Response time (tA) ≤ 100 ns ≤ 100 ns ≤ 100 ns
Maximum mains-side overcurrent protection 100 A gG 100 A gG 100 A gG
Short-circuit withstand capability for max. mains-side overcurrent protection (ISCCR) 25 kArms 25 kArms 25 kArms
Temporary overvoltage (TOV) (UT) – Characteristic 115 V / 120 min. – withstand 440 V / 120 min. – withstand 440 V / 120 min. – withstand
Operating temperature range (TU) -40 °C ... +80 °C -40 °C ... +80 °C -40 °C ... +80 °C
Operating state / fault indication green / red green / red green / red
Number of ports 1 1 1
Cross-sectional area (min.) 1.5 mm2 solid / flexible 1.5 mm2 solid / flexible 1.5 mm2 stranded / flexible
Cross-sectional area (max.) 35 mm2 stranded / 25 mm2 flexible 35 mm2 stranded / 25 mm2 flexible 35 mm2 stranded / 25 mm2 flexible
For mounting on 35 mm DIN rails acc. to EN 60715 35 mm DIN rails acc. to EN 60715 35 mm DIN rails acc. to EN 60715
Enclosure material thermoplastic, red, UL 94 V-0 thermoplastic, red, UL 94 V-0 thermoplastic, red, UL 94 V-0
Place of installation indoor installation indoor installation indoor installation
Degree of protection IP 20 IP 20 IP 20
Capacity 1 module(s), DIN 43880 1 module(s), DIN 43880 1 module(s), DIN 43880
Weight 107 g 113 g 117 g
GTIN 4.01E+12 4.01E+12 4.01E+12
PU 1 pc(s) 1 pc(s) 1 pc(s)
Product Specifications (PDF) Product Specifications (PDF) Product Specifications (PDF)