Novaris Products - Global Solutions in Lightning and Surge Protection

Product Information

Introduction

Glossary

Product Range

Series Surge Protectors

Signal Line Protection

Standards Compliance

IEC 61643-1 class I

AS/NZS 1768 category C

IEEE C62.41 category C

BS 6651 category C

CP 33 category C

IEC 1000-4-5

Spark Gap Arresters page two

Product Features

Product Description

Novaris SG Spark Gap Arresters have high surge ratings suitable for point of entry protection in installations with highly exposed overhead LV power lines with no local transformer. These are triggered spark gaps resulting in relatively low let through voltages sufficient to protect switchgear in main switchboards.

[ Download/View novaris_SG.pdf ]

		SG3-50-255	SG3-110-275	SGN-100-275
Electrical Specifications
Connection type		Shunt
Modes of protection		L-N		N-PE
Phases		3		-
Nominal voltage	U₀	230V / 50Hz
Maximum continuous voltage	U _c	255V / 50Hz	275V / 50Hz
Interrupting follow current @ Uc	I_fi	50kA _RMS	110kA _RMS	100A _RMS
Lightning impulse voltage sparkover (1.2/50μs)	U _p	<1.3kV	<2.5kV	<1.5kV
Maximum impulse current (10/350μs)	I_imp	50kA	110kA	100kA
Charge	Q	25As	55As	50As
Specific energy	W/R	600kJ/Ω	3000kJ/Ω	2500kJ/Ω
Response time	t_A	<100ns
Backup fuse (HRC)		315A	500A	-

Mechanical Specifications
Operating temperature / humidity		-40 to +80ºC / 0 to 90% non-condensing
Terminal capacity		35mm²	Lug Ø10	35mm²
Terminal screw torque		2.5Nm		2.5Nm
Environmental		IP 20	IP 00	IP 20
Mounting		TS35 DIN	Panel	TS35 DIN
Enclosure / colour		Flame retardant Polyamide 6 / Black
Weight		690g	3.0kg	210g

Dimensions
Width		106mm	201mm	36mm
Height		90mm	150mm	90mm
Depth		67mm	94mm	67mm

Options
Neutral-earth protection		N		-
Metal enclosure		M
Over / under voltage relay		O		-