Description
++++General FW1 type Outdoor on load break switch (switch disconnector) contained in this list are destined to switch stub lines and ring main lines or transformers( It can be equipped with MV HRC fuse links as short circuit protection function) or for switching under on load conditions.
FW1 type switch comply with IEC/IEEE and DVE-recommendation standards. Especially comply with DIN VDE 0670 part 3 and IEC publication IEC-60265, IEC-129.
++++Service environment
- Air temperature: Maximum temperature: +75ºC; Minimum temperature:-45ºC
- Humidity: Monthly average humidity 95%; Daily average humidity 90% .
- Altitude above sea level: Maximum installation altitude: 2500m
- Ambient air not apparently polluted by corrosive and flammable gas, vapor etc.
- No frequent violent shake
++++ Features and benefits
- Compact design
- All steel parts either in stainless steel or hot-dip galvanized
- Solid and stable base frame
- Main contact with icing protection
- Insulators available in porcelain or alternatively in silicone
- Minimal sag for the line-connection thanks to the two fixed terminals
- Completely maintenance antirust AL alloy -Arc chamber
- Switching-off procedure without external arc
- Short circuit making capacity under specific conditions possible
- Fixing on the supporting structure either by clamping (free setting) or screwing (holes in the base frame)
- Easy on-site installation and setting
- High reliability: up to 1'000 cycles (depending on the making current)
- All conducting parts either silver, nickel or tin-plated
- Practically maintenance-free
-
- ++++ Main technical specifications
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Sheet 1
| No. | Item | Unit | Data |
| 1 | Rated voltage | kV | 12 | 24 | 36 |
| 2 | Rated frequency | Hz | 50/60 |
| 3 | Rated current | A | 200/400/630 |
| 4 | Rated short circuit withstand current (1S) | kA | 20 |
| 5 | Rated peak withstand current (1S) | kA | 50 |
| 6 | Rated making current | kA | 31.5-50 |
7 |
Rated insulation level(HV) | lightning impulse |
kV | 75/85 | 125/145 | 170/195 |
| Power frequency withstand | 45 | 55/75 | 75/100 |
8 | Rated short circuit breaking capacity cos. Φ(0.7)
Without maintenance of contacts | | ------------------------------ |
- for active circuits | 20 breakings |
A | 630 | 630 | 400 |
| 30 breakings | 400 | 400 | 300 |
| 40 breakings | 300 | 300 | 250 |
| 50 breakings | 250 | 250 | 170 |
| 75 breakings | 170 | 170 | 160 |
| 120 breakings | 110 | 110 | 110 |
| 200 breakings | 65 | 65 | 65 |
| 280 breakings | 50 | 50 | 50 |
Sheet 2
| No. | Item | Unit | Data |
| 1 | Rated voltage | kV | 12 | 24 | 36 |
| 9 | For ring circuits breaking capacity | A | 630 | 400 | 250 |
| 10 | Rated breaking capacity of transformer | A | 50 |
| 11 | Rated breaking capacity of cable charging | A | 11 |
| 12 | Rated breaking capacity of earthing fault | A | 56 |
Note:
The FW1 type on load break switch (Switch disconnector) is equipped with stored energy released by fuse strike pins. The stored energy mechanism for the opening operation is released by fuse strike pins. The trip actuator is mounted on top of the fuse contact clip.
The DIN type fuse is held in spring type contacts, secured by a tail lever. All the components are made of stainless steel, to prevent corrosion, have long live, and in the reset position. The trip lever is parked in an over-centre position.
ISO certificate
Complaint
