Medium Voltage Air Insulated Fuse Switch Disconnectors

Model NO.: NAL, NALF
HS Code: 8535210000
1) Description

iNAL and iNALF switch disconnectors are based on a modular principle, which gives it a wide range of functionality. With a unique design that extinguishes electric arcs and enables high switching capacity, they represent an attractive solution as a key breaking element for applications in enclosed switchgear and transformer compact substations. In combination with type XRNT current limiting fuses, iNALF fuse switch disconnectors ensure control over the full range of overload and short-circuit currents. 
The switch disconnector system iNAL/iNALF are consists of a frame with 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 on the frame. Fuse bases type F, with or without fuse tripping mechanism, and an earthing switch type E/EB, suitable for both wall mounting and switchgear mounting.
Customer also can order shunt trip, under voltage release, auxiliary switches, motor operation.
The main areas of application of iNAL/iNALF switch disconnectors are as:Line switch disconnectors in medium-voltage networksSwitch disconnectors with fuses for the switching and protection of Distribution transformers &Motors

2) Standard

IEC60129, IEC60265, IEC60694, CSA C22.2, No. 193, and IEC 62271-105,ANSI No. C37.20.4

3) Main product features

A iNAL disconnector (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 large short-circuit currents) create a iNALF-type disconnector that provides protection against a major fault types in a modern electric network.Switchgear equipped with iNAL switch disconnectorStructure of panel with iNAL switch disconnectoriNALF 36 KV fuse switch disconnector 

4) Basic designs

iNAL
The standard feature consists of chassis, insulators and current carrying parts with the following pole distance:12 kV - pole distance 150 mm, 170 mm and 210 mm17.5 kV - pole distance 170 mm and 210 mm24 kV - pole distance 170 mm*, 235 mm and 275 mm36 kV - pole distance 360 mm* with insulating barriers.

Rated currents are:400, 630 and 1250 A up to 24 kV630/800/1000 A for 36 kViNALF.

Is delivered with the same pole distances as the standard feature. Fuse base type F is delivered for installation on both the opening and pivot sides, with or without automatic tripping. A fuse base with six insulators can also be delivered separately with some form of signal indication when a fuse blows or for installation on the pivot side of the switch.

5) Technical specification

Switch disconnector type iNAL

The switch disconnector complies with IEC standards 60129, 60254 and 60694 concerning general purpose switches and IEC Standards 420 and 62271-105 regarding correct co-operation between switch disconnector and fuse.
Rated voltage Un kV 12 17.5 24 36
Rated current In A 400 630 1250 400 630 1250 400 630 1250 630 800 800
  I A 400 630 1150 400 630 1150 400 630 1150 630 800 1000
Peak withstand current Ima kA peak. 67 67 67 50 50 50 50 50 50 50 50 50
Peak withstand current Idyn kA peak. 82 82 82 82 82 82 82 82 82 66 66 66
Short time current 1 sec. Ith kA eff. 31.5 31.5 31.5 31.5 31.5 31.5 31.5 31.5 31.5      
2 sec. 25 25 25 25 25 25 25 25 25 25 25 25
3 sec. 20 20 20       16 16 16      
Mainly active load breaking capacity1)(test duty 1 and 2, IIEC 60265-1 (IEC 265)) I A 400 630 1250 400 630 1250 400 630 1250 630 800 800
Rated cable/line charging breaking capacity IEC 60265-1(IEC 265)) I A 150 150 150 1005 1005 1005 80 80 80 45 45 45
Mainly inductive breaking capacity cos φ = 0,15   A 16 16 16 16 16 16 16 16 16 163 163 163
Rated earth fault breaking capacity IEC 60265-1(IEC 265)                            
Earth fault breaking capacity, fig. 6 I A 150 150 150 70 70 70 75 75 75      
Capacitive breaking capacity, fig. 7 I A 90 90 90 40 40 40 31.5 31.5 31.5 50 50 50
Max. breaking capacity in co-operation with fuses IEC 62271-105 (IEC 420 1990-11)   A 1600 1600   1600 1600   900 900   300*
Max. fuse size2) In A 125 125   125 125   80 80   40 40
Power frequency withstand voltage 50 Hz 1 min.:                            
- to earth and between poles   kV 42 45 55 80
- across isolating distance   kV 42 60 70 88
Impulse withstand voltage 1.2/50 µs:                            
- to earth and between poles   kV 75 95 125 170
- across isolating distance   kV 85 110 145 195
Pole distance   mm 150, 170, 210 170, 210 1704), 235, 275 360
Max. operating torque at:       80-100 Nm
-  closing K/A mech.   Nm 115-120 Nm K mech. 80-100 Nm
-  opening K/A mech.   Nm K mech. 120 Nm/A mech. 3 Nm / A mech. 3 Nm
Operating angle on the shaft   degrees 130 120
Arc time   ms 40-60 60

ATTENTION:

1.The payment term: We accept TT,30% deposit and 70% balance against copy of BL.
2.The delivery time: Usually it will take about 15-20 days.
3.The standard of package: Usually use strong plywood case for protection.
4.The material of transformer: We have two types, one is with copper and another one is with aluminum. It depends on your requirement. In fact, those two have difference if normal work well. Only except the long life. Copper is better and also higher price.
5.The logo: If you have good quantity, it absolute no problem to do OEM.
6.Our market: our products are popular in Indonesia, Philippines, Russia, USA, Middle East and so on. Some of them are our regular customers and some of them are developing. We hope you can join us and make mutual benefit from our cooperation..
7.Warranty: in 12 month since BL date.

OUR SERVICE:

1.quick response in before sales period help you got order.
2.excellent service in production time let you know each step we made.
3.reliable quality solve you after sale headache.
4.long period quality warranty ensure you can buy without hesitate.


WHY CHOOSE ROCKWELL:

1. One-stop supplier globally.
2. More than 10 years professional experiences in electrical appliance industry. 
3.We offer professional online technology support for perfecting your electrical solution free.
4. Experienced sales service and suggestion.
5. All the products with accessories under strict quality control and final inspection before shipping.
6. We can assure the powerful competitive price and reliable quality products.
7. Most competitive shipping rate from our own shipping forwarder.
8. Warranty assurance: 12 month
9. Whatever big or small order, we can provide you one-to-one service.  

CONTACT US:

Contact person: Mr. Chen Chengming
Tel:86-577-27869969
Mobile:86-18668777248
 

Your Best Choice for Electrical Appliances Industry!!!
Please leave an inquiry to know more details about Price , Packing ,Shipping and Discount.
Medium Voltage Air Insulated Fuse Switch Disconnectors
 

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