Product overview:
● Prefabricated charged touchable silicone rubber cable head is adopted, which is fully sealed, fully insulated, maintenance free, and can reliably ensure personal safety; ● Compact structure, compact and beautiful appearance, stainless steel double-layer box body, with a service life of more than 20 years; ● On the premise of not affecting the operation of the main network, it realizes regional power outage maintenance and reduces the scope of power outage; ● One or more SF6 load switches can be equipped with flexible and diverse wiring modes, and the branch outgoing line can reach 8 circuits at most; ● Lightning arrester, short circuit fault indicator, current limiting fuse, etc. can be selected to meet various user requirements.Product model description
| ① | Outdoor ring main unit |
| ② |
Number of incoming circuits |
| ③ | Number of outgoing circuits |
| ④ | Number of branch circuits |
| ⑤ | Branch circuit with switch |
| ⑥ | Number of branch circuit switches: one switch can be omitted without writing |
Technical parameter
| No. | Name | Parameter |
| 1 | Rated Voltage | 12kV |
| 2 | Rated Current | 630A |
| 3 | Power frequency withstand voltage (phase to ground) | 42kV/min |
| 4 | Lightning impulse Voltage | 75kV |
| 5 | Rated breaking current | 630A |
| 6 | Rated short-circuit switching current (peak value) |
50kA |
| 7 | Rated short-time withstand current | 25kA/4S |
| 8 | Rated peak withstand current |
50kA |
| 9 | Rated breaking capacitive current |
45A |
| 10 | Rated breaking inductive current |
16A |
| 11 | Full load breaking times |
100 |
| 12 | Mechanical operation times of opening and closing |
2000 |
Typical wiring scheme
Model |
Wire number description |
Primary wiring diagram |
Outline dimension (L x W x H) |
| DFW-102K | One in two branches with one switch |
 |
1180×1150×2300 |
| DFW-103K | One in three branches with one switch |
 |
1250×1150×2300 |
| DFW-104K | One in four branches with one switch |
 |
1250×1150×2300 |
| DFW-112K | One in one out two branches with one switch |
 |
1350×1150×2300 |
| DFW-113K | One in one out three branches with one switch |
 |
1420×1150×2300 |
| DFW-114K | One in one out four branches with one switch |
 |
1420×1150×2300 |
| DFW-102K 2 | One in two branches with two switches |
 |
1350×1150×2300 |
| DFW-112K2 | One in one out two branches with two switches |
 |
1500×1150×2300 |
| DFW-103K3 | One in three branches with three switches |
 |
1850×1150×2300 |
| DFW-113K3 | One in one out three branches with three switches |
 |
2000×1150×2300 |
Outline Diagram
Infrastructure Diagram
Technical requirement
● The inner side of the brick wall shall be plastered with 1:3 cement mortar and treated with waterproof treatment;
● The through beam adopts Φ6 concrete operation;
● Foundation channel steel shall be subject to anti-corrosion treatment after fabrication;
● After the installation of the branch box, the surrounding of the base shall be sealed with cement;
● Waterproof measures shall be taken at the entrance of the hole
● The grounding electrode shall be embedded in the foundation, and the grounding resistance shall meet the requirements of the power department
Ordering Instructions
● Product model and primary drawing can be provided if users have special requirements;
● Standard section of incoming and outgoing lines and branch cables;
● Number of lightning arresters and short circuit fault indicators selected;
● Material and color of shell.
WeChat QR Code
Official QR Code