NALF 24KV FN18-24R LBS load break switch|Indoor LBS|MV Load Break Switch (LBS)|Products|JGGY Electrical.com

NALF 24KV FN18-24R LBS load break switch

NALF series/ FN18-24 series Load break switch, that offers switchgear owners and assemblers the advantages of an advanced interrupting technology and proven, dependable performance in a compact design.

Category: Switchgear & High Voltage Products

Brand: JGGY Electric

Model: NALF series/ FN18

Power: 24KV/ 630A

FOB Port: Ningbo/Shanghai

Terms of Pyament: Western Union,T/T,Paypal

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Product Description

FN18-24D is a general purpose, three-pole, load break switch that offers switchgear owners and assemblers the advantages of an advanced interrupting technology and proven, dependable performance in a compact design. The switch is available to switchgear assemblers as a building block for metal-enclosed and pad-mounted switchgear applications in ratings from 12-40.5 kV. The standard FN18 switch includes a heavy-duty steel frame with stand-off insulators, a unique puffer-type arc extinguishing system, an operating mechanism and current-carrying components, including blade-type interrupters with cast hinges and jaw connectors. Optional accessories and features include a variety of operating handles, a motor operator, auxiliary switches, a shunt trip device, fuse bases, mechanical fuse tripping, grounding switches, mechanical door interlocking and key interlocking.

Introduction
The LBS type NAL/NALF is based on a modular principle. The basic unit consists of a framewith insulators and current carrying parts. Two different types of operating mechanisms.snap action mechanism type K or stored spring energy mechanism type A, can be mounted onthe frame. Fuse bases type F, with or without fuse tripping mechanism, and an earthing switchtype E/EB, suitable for both direct mounting and free standing components, complete thebasic equipment of a switch disconnector. These modules can be easily configured accordingto customer expectations. Accessories, such as shunt trip, under-voltage release, auxiliaryswitches, motor operation and various systems for manual operation can easily be added.
Product features
A NAL Load Break Switch (which interrupts load currents up to 1,250 A) and a small fault-current circuit combined with a fuse base (F) and current limiting fuses (which break largeshort-circuit currents) create a NALF-type Load Break Switch that provides protection againstamajority of fault types in a modern electric network.
Operating conditions
Ambient temperature:
Maximum +40ºC Maximum 24 hour average +35ºC
Minimum (according to "minus 5 indoorclass" )-15ºC·
Humidity:
Daily average ambient air relative humidity ≤ 95%, on average ≤ 90%;
Saturated vapor pressure of daily mean values s 2.2 x 10-3Mpa, on averages 1.8 x10- 3Mpa;
Maximum site altitude:≤ 1000 M above sea level,

ABB NAL/NALF

Model		FN18/NAL/NALF-12	FN18/NAL/NALF-24
Rated Voltage		12KV	24KV
Rated Frequency		50/60Hz	50/60Hz
Rated Current		630A	630A
Rated Short Circuit Closing Current		67KA	50KA
Rated Peak Withstand Current (Dynamic Steady Current)		67KA	50KA
Rated Short-Time Withstand Current(Thermally Stable Current)	1s	31.5KA	25KA
	2s	25KA	25KA
	3s	20KA	16KA
Max. breaking capcity in co-operation with fuse		1600A	900A
Max.fuse current		200A	200A
1 min Power Frequency Withstand Voltage(Effective Value)Ground and Phase	to earth and between poles	42KV	65KV
	across isolating distance	48KV	79KV
Lightning Impulse Withstand Voltage(Peak) 1.2/50 μs	to earth and between poles	75KV	125KV
Lightning Impulse Withstand Voltage(Peak) 1.2/50 μs	across isolating distance	85KV	145KV