72.5kV Dry R.I.F. /R.I.P. Transformer Bushing(Load flow Type)
- Dimension-table 1
- Dimension-table 2
- Electrical data
| Dimension -table 1 |
| FBRG
72.5/1600 | FBRGL
72.5/1600 | FBRG
72.5/2000 | FBRGL
72.5/2000 |
| Total length | L | 1770 | 2170 | 1790 | 2190 |
| Terminal blocks | Hole number and
hole diameter | n1×d1 | 4x18 | 4x18 | 4x18 | 4x18 |
| Hole distance | a1 | 50 | 50 | 50 | 50 |
| Panel surface | b1×b2 | 100×100 | 100×100 | 100×100 | 100×100 |
| Panel thickness | δ | 16 | 16 | 16 | 16 |
| Head diameter | d3 | 140 | 140 | 140 | 140 |
| Compound external insulation | Insulation diameter | L1 | 840 | 840 | 840 | 840 |
| Creepage distance | S/U | ≥31 | ≥31 | ≥31 | ≥31 |
Maximum umbrella
diameter | d9 | 220 | 220 | 220 | 220 |
| Flange | Outer diameter of
flange plate | d7 | 320 | 320 | 320 | 320 |
Center distance of
installing hole | a2 | 280 | 280 | 280 | 280 |
Hole number and
hole diameter | m×d2 | 6×18 | 6×18 | 6×18 | 6×18 |
| Inner diameter of sealing surface | ＞d4 | 160 | 160 | 160 | 160 |
| Total length of oil impregnated part | L2 | 560 | 960 | 580 | 980 |
| Core diameter in oil | d | 120 | 120 | 120 | 120 |
| Oil earthed length | L3 | 0 | 400 | 0 | 400 |
| Equalizing ball | L5 | 230 | 230 | 250 | 250 |
| d5 | 240 | 240 | 260 | 260 |
| d6 | 160 | 160 | 180 | 180 |
| Oil Terminal blocks | Panel surface | b3 | 65 | 65 | 80 | 80 |
| b4 | 90 | 90 | 90 | 90 |
| Hole distance | a3 |
|
| 40 | 40 |
| a4 | 45 | 45 | 45 | 45 |
hole number and
hole diameter | n2×d8 | 2×14 | 2×14 | 4×14 | 4×14 |
| Panel thickness | δ2 | 20 | 20 | 20 | 20 |
| Casing weight | kg | 47 | 57 | 64 | 74 |
Note:The outline dimension of the product in the table is recommended,all size can be designed according to the needs of users. Only one kind of CT length is listed on the table, and the user can design the CT length according to the product requirements.With the changes of CT length, relevant dimensions also change.
| Dimension -table 2 |
| FBRG
72.5/2500 | FBRGL
72.5/2500 | FBRG
72.5/3150 | FBRGL
72.5/3150 |
| Total length | L | 1790 | 2190 | 1815 | 2215 |
| Terminal blocks | Hole number and
hole diameter | n1×d1 | 4x18 | 4x18 | 4x18 | 4x18 |
| Hole distance | a1 | 50 | 50 | 60 | 60 |
| Panel surface | b1×b2 | 100×100 | 100×100 | 125×125 | 125×125 |
| Panel thickness | δ | 18 | 18 | 18 | 18 |
| Head diameter | d3 | 140 | 140 | 140 | 140 |
| Compound external insulation | Insulation diameter | L1 | 840 | 840 | 840 | 840 |
| Creepage distance | S/U | ≥31 | ≥31 | ≥31 | ≥31 |
Maximum umbrella
diameter | d9 | 220 | 220 | 220 | 220 |
| Flange | Outer diameter of
flange plate | d7 | 320 | 320 | 320 | 320 |
Center distance of
installing hole | a2 | 280 | 280 | 280 | 280 |
Hole number and
hole diameter | m×d2 | 6×18 | 6×18 | 6×18 | 6×18 |
| Inner diameter of sealing surface | ＞d4 | 160 | 160 | 160 | 160 |
| Total length of oil impregnated part | L2 | 580 | 980 | 580 | 980 |
| Core diameter in oil | d | 120 | 120 | 120 | 120 |
| Oil earthed length | L3 | 0 | 400 | 0 | 400 |
| Equalizing ball | L5 | 250 | 250 | 250 | 250 |
| d5 | 260 | 260 | 260 | 260 |
| d6 | 180 | 180 | 180 | 180 |
| Oil Terminal blocks | Panel surface | b3 | 80 | 80 | 80 | 80 |
| b4 | 90 | 90 | 90 | 90 |
| Hole distance | a3 | 40 | 40 | 40 | 40 |
| a4 | 45 | 45 | 45 | 45 |
hole number and
hole diameter | n2×d8 | 4×14 | 4×14 | 4×14 | 4×14 |
| Panel thickness | δ2 | 20 | 20 | 20 | 20 |
| Casing weight | kg | 65 | 75 | 68 | 78 |
| Technical standards | GB/T 4109-2008 IEC 60137 Ed.6.0 |
| Rated voltage | 72.5kV |
| Rated current | 1600-3150A |
| 1min power frequency dry(wet) voltage withstand | 155(140)kV |
| Full-wave impulse withstand voltage of lighting | 325kV |
| Under 1.05 times of maximum phase voltage tan δ | ≤0.004 |
| Partial discharge under the rated voltage | ≤10pC |
| Bending resistant test load | 2500-4000N |
| The minimum nominal creepage distance | 31mm/kV |
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Transformer Bushing