Product Overview
The RW12-12F/200A drop-out fuse has a rated voltage of 15 kV and a rated current of 200 A, and is used for short-circuit and overload protection of distribution lines of 15 kV and below. The RW12-12F/200A drop-out fuse has a rated breaking current of 12500 A and a lightning impulse withstand voltage of 125 kV, and is used on distribution lines of 15 kV and below.
Working Principle
The drop-out fuse is a short-circuit and overload protection device for distribution lines. Under normal operation the fuse tube is fixed on the static contact by trunnions; when an overload or short circuit occurs in the line, the fuse melts and the fuse tube falls under gravity, forming a clearly visible break that isolates the faulty line for inspection and fuse replacement.
Main Technical Parameters
| Model | Rated voltage (kV) | Rated current (A) | Breaking current (A) | Lightning impulse withstand voltage (kV) | 1-min power-frequency withstand voltage (kV) | Creepage distance (mm) | Weight (kg) | Outline dimensions (cm) |
|---|---|---|---|---|---|---|---|---|
| RW12(F) | 15 | 100 | 8000 | 125 | 45 | 320 | 8 | 58x40x15 |
| RW12(F) | 15 | 200 | 12500 | 125 | 45 | 320 | 8 | 58x40x15 |
The RW12-12F/200A drop-out fuse has a creepage distance of 320 mm, a weight of 8 kg and outline dimensions of 58×40×15 cm, and can be used on distribution lines with heavier pollution.
Structure
- Arc extinguishing chamber;
- Parallel-groove connector: cast brass; even with inconsistent dimensions, connection is simple thanks to the 2 guide sleeves, and other connector types are also compatible;
- Link hook: for use with the switching operating rod;
- Fuse tube: fibreglass with a special UV-resistant coating; versions with an isolating-switch blade are available;
- Metal ferrule: cast red copper, pinned to the top and bottom of the fuse tube as a permanent connection;
- Collar joint: ensures reliable tripping;
- High-strength insulator;
- Trunnion sleeve: holds the fuse tube on the hinge when closed;
- Trunnion: high-strength cast bronze, silver-plated; the trunnion surface presses on the hinge surface, keeping the fuse tube aligned when closed.
Reference Parameters of Other Models in the Series
| Model | Rated voltage (kV) | Rated current (A) | Breaking current (A) | Lightning impulse withstand voltage (kV) | 1-min power-frequency withstand voltage (kV) | Creepage distance (mm) | Weight (kg) | Outline dimensions (cm) |
|---|---|---|---|---|---|---|---|---|
| RW12-12/100A | 12 | 100 | 6300 | 110 | 40 | 250 | 6.5 | 40x36x11.5 |
| RW12-12/200A | 12 | 200 | 12500 | 110 | 40 | 250 | 6.5 | 40x36x11.5 |
| RW12-15/100A | 15 | 100 | 6300 | 110 | 42 | 260 | 7.5 | 61x42x13 |
| RW12-15/200A | 15 | 200 | 8000 | 110 | 42 | 260 | 7.5 | 61x42x13 |
Note: the above are catalogue parameters of other models in the series, for selection reference.
Related Products
Drop-out fuses of the same series and other types available:
- RW11-12KV/200A drop-out fuse
- RW12-10kv/200A drop-out fuse
- RW12-15/200A drop-out fuse
- RW12-12F/200A drop-out fuse
- HRW11-12/200A silicone rubber drop-out fuse
- HRW10-12F/200A drop-out fuse
- HRW5-35/200A drop-out fuse
- PRWG2-35/200A drop-out fuse
Other high-voltage switchgear:
