Low Voltage Surge Arresters for Overhead Lines - ABB LOVOS

ABB Medium Voltage MV Surge Arresters

ABB LOVOS LV Low Voltage Surge Arresters

ABB LOVOS-5 ABB LOVOS-10

 

ABB LOVOS-5 and LOVOS-10 low voltage surge arresters ensure protection of low voltage overhead lines, distribution transformers and LV electrical equipment from effects of lightning and switching overvoltage. ABB LOVOS surge arresters are suitable for indoor and outdoor installations.

ABB LOVOS low voltage surge arresters are a new generation of low voltage surge arresters. Designed in close cooperation with clients from all around the whole world, taking into account all needs and requirements of the market. The LOVOS surge arresters have a frequency range from 48 to 62 Hz and can be used for indoor and outdoor applications. The nominal discharge current is 5 kA or 10 kA and the continuous operating voltage, Uc=280 V, 440 V, 500 V or 660 V.

ABB LOVOS LV Low Voltage Surge Arrester Applications

LOVOS Low voltage surge arresters are used for the protection of:

• Low voltage overhead lines
• Individual electric energy receivers
• Distribution transformers
• Other electrical devices from effects of lightning and switching overvoltage

 

ABB LOVOS LV Low Voltage Surge Arrester Advantages

• Easy assembly and connection
• Disconnecting device simutaneously fulfilling the function of damage indicator
• Large choice of accessories
• Casing resistant to UV radiation, non-flammable
• Maintenance-free product
• All accessories are made of corrosion-resistant materials

 

ABB LOVOS Low Voltage Surge Arrester Technical Data

Arrester Type	Uc (effective value)	Up at In	In / Imax	Up at Imax	Energy absorption capability	Up at long lasting surge 2000μs
ABB LOVOS-5/280	280V	1100V	5/25kV	1500V	1800J	850V
ABB LOVOS-5/440	440V	1800V		2500V	3000J	1300V
ABB LOVOS-5/500	500V	2000V		2600V	3200J	1600V
ABB LOVOS-5/660​	660V	2500V		3200V	4000J	1800V
ABB LOVOS-5/1000	1000V	4000V		5200V	6400J	3200V
ABB LOVOS-10/280	280V	1100V	10/40V	1700V	2200J	900V
ABB LOVOS-10/440	440V	1800V		2700V	3300J	1400V
ABB LOVOS-10/500	500V	2000V		3200V	3900J	1700V
ABB LOVOS-10/660​	660V	2500V		3800V	4500J	1900V
ABB LOVOS-10/1000	1000V	4000V		5800V	7800J	3400V

 

Principle of Operation

The principal "active" element of the surge arrester is a metal oxide varistor characterised by high non-linearity. At a working voltage mainly a capacity current flows smaller than 1 mA. Any voltage increase causes a large increase of current flowing throught the varistor, leading in turn to immediate limitation of further voltage increase on surge arrester terminals.When the overvoltage disappears, the surge arrester immediately returns to its basic state.

Surge arresters are equipped with a disconnecting device, that disconnects the surge arrester from the network if it becomes damaged as the result of overvoltage of too high energy or inadmissable voltage increase in the system. If such a situation occurs then the bottom terminal of the disconnecting device is "rejected" by the spring inside. This terminal remains suspended on an insulation "Leash".

ABB Kabeldon Cable Joints Terminations Separable Connectors LV-HV

Low Voltage Surge Arresters for Overhead Lines - ABB LOVOS

Low Voltage Surge Arresters for Overhead Lines - ABB LOVOS - Instruction