Open Frame 11kV Compact Transformer Substation , Outdoor Cable Branch Box
11kV Outdoor RMU Cable Branch Box For power acceptance and distribution
Overview
DFT6-12/24 series is the new power supply equipment that we design for coordinating 10kV/24kV power 
network cable system.
It is suitable at the cable node place in 10 kV/24kV system,as the electric energy accepts and distributing.The cable conveys the electric energy, used in outdoor with the cable circuit to connect and breakout, branch and continues or changes.
Service condition
A. Altitude ≤1000m (above sea level);
B. Ambient temperature: -25ºC~+40ºC;
C. Wind speed ≤34m/s
D. The spot should have no regularly exquisite shake.
Main technical data
Main parameter of FN26-12/24 SF6 load switch
| Item | Unit | Parameter | Parameter |
| Rated voltage | kV | 12 | 24 |
| Rated current | A | 630 | 630 |
| Rated short time withstand current | kA/s | 25/2 | 25/2 |
| Rated peak withstand current | kA | 63 | 63 |
| Rated short circuit making current | kA/times | 50/2 | 63/2 |
| 1 min power frequency withstand voltage | kV | 42 | 65 |
| Lightning impulse withstand voltage | kV | 75 | 125 |
| Mechanical life | Times | 10000 | 10000 |
| SF6 gas pressure(surface pressure in 20ºC) | Mpa | 0.04 | 0.04 |
| Yearly gas leakage rate | ≤1% | ≤1% |
Main technical parameter of cable connector
| Item | Unit | Parameter | Parameter |
| Rated voltage | kV | 12 | 24 |
| Rated current | A | 630 and below | 630 and below |
| Cross section of cable | mm2 | 25~400 | 35~400 |
| Resistance in connection point | μΩ | 40 | 45 |
| Partial discharge | pC/kV | ≤10/13 | ≤10/21.5 |
| Rated short time withstand current | kA/s | 20/3 | 25/2 |
| Rated peak withstand current | kA | 50 | 63 |
| 1 min power frequency withstand voltage | kV | 42 | 65 |
| Lightning impulse withstand voltage | kV | 75 | 125 |
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