hrc-fuse

HRC Fuses

Depending on SAFDAR SASSANI’s long experience in this field, We manufacture Low HRC Fuse System based on the Know How , and with complete production line and testing equipment bought from ” AEG ” Germany. This fusing system comply with international electrical commission ( IEC ) 269-2 and German standard VDE 0660 . The dimensions to DIN 43620 are closely kept , so that our types will surely fit all other system. They have delayed characteristics in the

following scatter ranges:

– gL in accordance with VDE 0636
– gL in accordance with IEC 269-2
– gL in accordance with VDE 0660

Selectivity:

Our HRC fuse links are selected in ratio 1:2 with all fuse links which fulfill IEC 269-2 class of operation gL and ratio 1:16 with all fuses which fulfill VDE 0636 class of operation gL irrespectively of the system. They are selective in ratio 1:1.25 with each other even under very high SHORT-CIRCUIT.

Internal Loss and Temperature Rise :

Due to inferior-self-resistance , internal loss and temperature rise under normal load can be neglected. Even under Over Load during several hours , working temperature remains within the allowed limits. The Low Self Resistance allows to expose the fuse to 20% Over permanently without deterioration.

Design :

The indicator on the top plate clearly indicates the switching condition . it reliably operates at voltages from 6 V upwards. The Fuse Body consists of :
– Special ” STEATITE ” , particularly resistant to alternating temperature.
– Contact Blades , Top , and Bottom plates all silver plated.

Quality :

Uniform , good quality , and adherence of special technical characteristics , are guaranteed by 100% measurement during assembly and daily routine and random checks in our own , and in neutral testing station and laboratories in accordance with the said standards absolutely under ” AEG ” instructions.

Structure of (LV) HRC system:

The (LV) HRC system consists of the fuse link , fuse base , fuse gear , and universal operating handle , dimensioned for nominal voltage of 500 , or 660 V ( AC).
(LV) HRC Links 660 V and 500 V (AC) For Line Protection

Nominal current and time/current ranges:
Our HRC fuse links are manufactured in 7 sizes :

00-C From 4 to 100 A Current Rating
00   4   160
0   6   160
1   80   250
2   125   400
3   315   630
4   800   1000

PROTICUR ” ULTRA – RAPID ” FUSE LINKS

Ultra -Rapid action fuses type ” NT ” & ” NG ” designed to protect semi – conductor components in rectifiers in systems with nominal voltage 660 V. These fuses can also be relied upon , to perform protective tasks of a similar nature such as preventing thermal and dynamic over-loading in highly sensitive equipment.

SPECIFICATIONS :

IEC 269 – 4
DIN – VDE 0636 part 23 and part 33
DIN 43653
DIN 49515
DIN 49522
DIN 43620

 

 

HRC Fuse
69 70 71
SIZE 00-CRated Current : 4 – 100 (A) SIZE 00Rated Current : 4 – 160 (A) SIZE 0Rated Current : 6 – 160 (A)
72 73 74
SIZE 1Rated Current : 80 – 250 (A) SIZE 2Rated Curent : 125 – 400 (A) SIZE 3Rated Curent : 315 – 630 (A)
  75  
  SIZE 4Rated Current : 800 , 1000 (A)  

 

HRC fuse and Composite insulator production line