The Fuse Cutout type OEI was developed to operate in overhead distribution systems rated at 11
kV to 38 kV grounded systems with 100 or 200 A nominal currents.
Especially designed to protect transformers, capacitors, cables or lines.
It is robust construction, made of rigorously tested material, will interrupt all faults under the
most severe conditions, maintaining mechanical and electric characteristics.
The inserts, hardware and structural bolts and nuts are made from heavy galvanized steel.
The Fuse Cutout type OEI can be applied on all three-phase system rated at or below the maximum
operational rating of the cutout.
kV to 38 kV grounded systems with 100 or 200 A nominal currents.
Especially designed to protect transformers, capacitors, cables or lines.
It is robust construction, made of rigorously tested material, will interrupt all faults under the
most severe conditions, maintaining mechanical and electric characteristics.
The inserts, hardware and structural bolts and nuts are made from heavy galvanized steel.
The Fuse Cutout type OEI can be applied on all three-phase system rated at or below the maximum
operational rating of the cutout.
| S/N | Description | Units | Schedule A | Schedule B | |
| 1 | Current ratings | A | 5 | ||
| 2 | Frequency | Hz | 50 | ||
| 3 | Rated Speed ratio | Type K as per IEC 60282 -2 | |||
| 4 | Class of fuse link | Class B as per IEC 60282-2 | |||
| 5 | Fuse element | Tin or Silver | |||
| 6 | Following Routine test results shall be provided on delivery of fuse links | Yes/No | a) a static strength test; and | Yes | |
| b) a resistance test, with the fuse-link under strain. | Yes | ||||
| 7 | The following tests shall be performed on one fuse-link per batch and test results provided on delivery of fuse links: | Yes/No | a)confirmation of the time/current characteristics; and | Yes | |
| b) a dynamic strength test. | Yes | ||||
| 8 | Drawing showing construction and dimensions as per figure 1 below to be provided with bid | Yes/No | Yes | ||
| 9 | Previous type tests reports/certificate to be provided on bid. | Yes/No | Yes | ||
| 10 | Altitude above sea level | m | 1400 | ||
| 11 | Ambient operating | oC | -1 to 40 | ||
| Performance Characteristic | |
| Applied standard | IEEE C37.42-2009 |
| Catalog number | |
| Nominal system voltage kV | 22 |
| Rated Frequency Hz | 50 |
| Rated m aximum(design) voltage | 27 |
| Rated Continuous current A-RMS | 100 |
| Rated Interrupting current asymmetrical/symmetrical A-RMS | 12000/8000 |
| BIL 1.2x50 µs kV-peak | 125 |
| Minimum critical impulse flashover voltage(CFO)KV peak | 140 |
| Dry withstand voltage kV-RMS | 42 |
| Wet withstand voltage kV-RMS | 36 |
| Creepage distance to group Min.mm | 320 |
| Minimum creepage factor of insulator (Creepage Distance/arcing distance) | 2 |
| Performance Characteristic | |
| Applied standard | IEC60282-2 |
| Catalog number | |
| Nominal system voltage kV | 11 |
| Rated Frequency Hz | 50 |
| Rated m aximum(design) voltage | 12 |
| Rated Continuous current A-RMS | 100 |
| Rated Interrupting current asymmetrical/symmetrical A-RMS | 12000/8000 |
| BIL 1.2x50 µs kV-peak | 125 |
| Minimum critical impulse flashover voltage(CFO)KV peak | 140 |
| Dry withstand voltage kV-RMS | 42 |
| Wet withstand voltage kV-RMS | 36 |
| Creepage distance to group Min.mm | 372 |
| Minimum creepage factor of insulator (Creepage Distance/arcing distance) | N/A |
| Performance Characteristic | |
| Applied standard | IEEE C37.42-2009 |
| Catalog number | |
| Nominal system voltage kV | 33 |
| Rated Frequency Hz | 50 |
| Rated m aximum(design) voltage | 38 |
| Rated Continuous current A-RMS | 100 |
| Rated Interrupting current asymmetrical/symmetrical A-RMS | 8000/5000 |
| BIL 1.2x50 µs kV-peak | 150 |
| Minimum critical impulse flashover voltage(CFO)KV peak | 165 |
| Dry withstand voltage kV-RMS | 70 |
| Wet withstand voltage kV-RMS | 60 |
| Creepage distance to group Min.mm | 650 |
| Minimum creepage factor of insulator (Creepage Distance/arcing distance) | 2.3 |
| DIMENSION(mm) | |||||
| RATED CURRENT (A) | A | B | C | D | L MN |
| 1 to 25 | 12.5+0.2 | 19.0+0.2 | 6.5 | 2.0 | 533,600,787 |
| 30 to 40 | 12.5+0.2 | 19.0+0.2 | 8.0 | 3.0 | 533,600,787 |
| 50 to 100 | 19.0+0.3 | not applicable | 9.0 | 5.0 | 533,600,787 |
| 140 to 200 | 19.0+0.3 | not applicable | 13.0 | 7.0 | 533,600,787 |