British Standard dimensioned IEC fuses for use in oil filled distribution switchgear,OEFMA
Medium Voltage Fuses and Fuse Links
British Standard dimensioned IEC fuses for use in oil filled distribution switchgear
British Standard dimensioned IEC fuses for use in oil filled distribution switchgear
OEFMA
Specifications
Decription:
BS 2692-1 medium voltage fuses for use on the primary circuit of three-phase 50Hz transformers in oil field switchgear. Fitted with powerful pyrotechnic striker pin.
Ratings:
Agency Information:
Fuses comply with IEC 60282-1, BS2692-1 and ESI Standard 12-8. 7.2 and 12kV fuses tested at highest system voltage and approved by the UK Electricity Association approvals panel.
Features and Benefits:
@ Physically sized for replacement of British Standard fuse links
Typical Applications:
@ Medium Voltage BS designed equipment
Build-A-Code:
Catalog Number Build-A-Code | ||
kV | Basic | Amps |
Catalog Number | ||
_ _ _ | _ _ _ _ _ | _ _ _ |
Note:
This Catalog Number selection table is based upon the following criteria:
1./Withstand against magnetizing inrush current taken as 12 times full-load current for 0.1 second.
2./Withstand against 150% permissible overload current. Recommendations marked with asterisks have the following significance:-
*Limited to permissible overloads of 130%.
**Permits use of a 12kV OHFMA 80A fuse with a 100kVA transformer where permissible overload does not exceed 130%.
3./For 6.6kV systems, 12kV fuses are recommended where possible in the interests of standardization.
4./Wherever possible, 10 inch long FO1 fuses are offered rather than equivalent 14 inch FO2 types.
5./The above recommendations are not generally applicable to transformers feeding motor circuits with starting currents in excess of the transformer full load current. In this event, please consult Cooper Bussmann.
1./Withstand against magnetizing inrush current taken as 12 times full-load current for 0.1 second.
2./Withstand against 150% permissible overload current. Recommendations marked with asterisks have the following significance:-
*Limited to permissible overloads of 130%.
**Permits use of a 12kV OHFMA 80A fuse with a 100kVA transformer where permissible overload does not exceed 130%.
3./For 6.6kV systems, 12kV fuses are recommended where possible in the interests of standardization.
4./Wherever possible, 10 inch long FO1 fuses are offered rather than equivalent 14 inch FO2 types.
5./The above recommendations are not generally applicable to transformers feeding motor circuits with starting currents in excess of the transformer full load current. In this event, please consult Cooper Bussmann.
Code Number Reference:
Type
O = Oil tight
Diameter
E = 63.5mm
H = 63.5mm
L = 63.5mm
Length
F = 254mm
G = 359mm
Striker
M = As specified in BS 2692 table 11
Tags
A = None (plain caps)
O = Oil tight
Diameter
E = 63.5mm
H = 63.5mm
L = 63.5mm
Length
F = 254mm
G = 359mm
Striker
M = As specified in BS 2692 table 11
Tags
A = None (plain caps)
Catalog Number | Voltage | Descriptional Ref. BS2692: | Amp Ratings | Breaking Capacity (kA) | Transformer | Transformer Primary Voltage |
OEFMA | 3.6kV | FO1 | 6.3, 10, 16, 20, 25, 31.5, 40, 50, 63, 80, 100, 125, 160, 200 |
50 | 630 | 3.6kV OEFMA 200 |
OEGMA | 3.6kV | FO2 | 100, 125, 160, 200 | 50 | ||
OLGMA | 3.6kV | FO2 | 250 | 50 | 1000 | 3.6kV OLGMA 250* |
OEFMA | 7.2kV | FO1 | 80, 100, 112 | 45 | 630 | 7.2kV OEFMA 100 |
OHGMA | 7.2kV | FO2 | 125, 140, 160 | 45 | 1250 | 7.2kV OHGMA 160* |
OEFMA | 12.0kV | FO1 | 6.3, 10, 16, 20, 25, 31.5, 40, 50, 63 |
40 | 630 | 12kV OEFMA 63/— |
OHFMA | 12.0kV | FO1 | 71, 80 | 40 | 750/800 | 12kV OHFMA 80/04 |
OHGMA | 12.0kV | FO2 | 6.3, 10, 16, 20, 25, 31.5, 40, 50, 63, 71, 80, 90, 100 |
40 | 1250 | 12kV OHGMA 100/— |
OLGMA | 12.0kV | FO2 | 125 | 40 | 1600 | 12kV OLGMA 125*/— |
OEFMA | 15.5kV | FO1 | 6.3, 10, 16, 20, 25, 31.5, 40, 50, 63 |
40 | 750/800 | 15.5kV OEFMA 63 |
OHGMA | 17.5kV | FO2 | 6.3, 10, 16, 20, 25, 31.5, 40, 50, 63, 80 |
35 | ||
OLGMA | 15.5kV | FO2 | 100 | 40 | 1600 | 15.5kV OLGMA 100* |
OEGMA | 24.0kV | FO2 | 6.3, 10, 16, 20, 25, 31.5, 40, 50 |
25 |