| Place of Origin: | XIAN, China |
|---|---|
| Brand Name: | XG |
| Certification: | ISO14001 BS OHSAS18001 |
| Minimum Order Quantity: | 1 |
| Packaging Details: | WOODEN BOX |
| Delivery Time: | 3-7 DAYS |
| Payment Terms: | L/C, T/T, D/A, D/P, Western Union, MoneyGram |
| Supply Ability: | 2000SET/month |
| Model Number: | LW36 | Rated Voltage: | 66kv 72.5kv 110kv 126kv 145kV |
|---|---|---|---|
| Rated Current: | 200A-3150A | Frequency: | 50/60Hz AC |
| Type: | High Voltage | Application: | Circuit-breaking |
| Packing: | Wooden Case | ||
| High Light: | Outdoor High Voltage Switchgear,High Voltage Disconnect SF6 Circuit Breaker,SF6 Circuit Breaker 36kV |
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1.LW36kV SF6 HV Overload Switch Circuit Breaker Load Switch
LW36-126/T3150-40 outdoor high voltage SF6 circuit breaker uses SF6 as the insulating arc extinguishing medium. It can connect, transmit and disconnect the normal circuit current in the high voltage transmission line; It can also operate the short circuit current or overload current of switchgear. Its structure adopts porcelain type, which can carry out the operation of three-phase opening and closing and automatic reclosing. It can protect and control the transmission line in the 50Hz and 126kV line.
The circuit breaker adopts self-extinguishing principle and is equipped with spring mechanism. When the circuit breaker gets the break command, the rigid parts are moved down by the cylinder, the active arc contact, and the rod under the action of the break spring. When moving, the main fixed contact leaves the active main contact, and the electric current moves to the arc contact, and the arc contact leaves, and an arc appears between the fixed contact and the active contact. When it breaks off the short current, the high capacity current causes a lot of energy between the arc contacts, and the hot gas flows into the thermal expansion chamber, where heat energy is exchanged, and the gas becomes low temperature and high pressure. Now, because the pressure in the thermal expansion chamber is greater than that in the auxiliary chamber, close the check valve of the interrupter. When the current value is zero, the high-pressure gas in the thermal expansion chamber blows back to the gap, and the arc goes out. When it breaks a small current (less than a few thousand amperes), due to low energy, the rising speed of gas pressure in the expansion chamber is slower than the auxiliary chamber, the check valve opens, the compressed gas blows into the expansion chamber, the gas flows, when the current value is zero, the arc goes out.
2.Main features:
1.Adopt self-extinguish principle, small operating energy, light mechanical impact;
2.Use spring mechanism, its performance is not relevant to temperature, stable performance;
3.Optimized interrupter structure and movement curve of contact, high reliability on breaking current;
4.Reignite and restrike cannot occur under breaking capacitive current;
5.Optimized pole and frame design with higher capability to endure earthquake;
6.High reliability, long average normal service time, low maintenance cost;
7.Convenient installation and configuration in field, it takes only one day or two days;
3.Technical parameters
| NO. | ltems | Unit | Parameter | |
| 1 | Rated voltage | KV | 126 | |
| 2 |
Rated power frequency withstand voltage(1min) |
Phase-to-phase Phase-to-ground |
KV | 230 |
| fracture | KV | 230+73* | ||
| 3 |
Rated lightning impulse withstand voltage |
Phase-to-phase Phase-1o-ground |
KV | 550 |
| fracture | KV | 550+103* | ||
| 4 |
Power frequency withstand voltage ( 5min ) under SF6 zero-gauge pressure |
kV | 95 | |
| 5 | Rated frequency | Hz | 50 | |
| 6 |
Rated current Raled short circuit breaking current |
A | 3150 | |
| 7 | kA | 40 | ||
| 8 | First-pole-to-clear factor | 1.5 | ||
| 9 | Rated short circuit making current(DC component) | More than 41% | ||
| 10 | Rated short circuit making current(peak) | kA | 100 | |
| 11 | Rated short time withstand current(ms) | kA | 40 | |
| 12 | Rated short time withstand current | kA | 100 | |
| 13 | Rated short circuit duration | s | 4 | |
| 14 | Rated out-of phase breaking current | kA | 3(OP1),10(OP2) | |
| 15 | Short range breaking current | kA | 36;30 | |
| 16 | Wrong-phase earthing breaking current | kA | 34.8 | |
| 17 | Rated line charging switching current | A | 31.5 | |
| 18 | Full capacity breaking time without check and repair | Times |
20 or rated current breaking times:3000 |
|
| 19 | Rated operating sequence | O-0. 3s-CO-180s-CO | ||
| Installation site | outdoor |
| Ambient temperature | -25℃~+40℃ |
| Max. daily temperature difference | ≤25℃ |
| Height above sea level | 2000m(no limit for specified order) |
| Air humidity | Daily average:≤95%; month average:≤90%; |
| Wind speed | ≤34m/s |
| Solar radiation | ≤0.1W/cm2(fine day, noon) |
| Earthquake intensity | horizontal:≤0.3g;vertical:≤0.15g |
| Icing thickness | ≤10mm |
| Creepage distance | 25mm/kV or 31mm/kV |
| Static load on terminal in Y-direction | 1250N |
| Static load on terminal in X-direction | 750N |
| Static load on terminal in Z-direction | 1000N |
5. FAQ
1. All our activities are accredited to ISO 14001:2015 and IEC standard.
2. Technology ensure the quality satisfy international request.
3．Generally we promise one - two years quality guarantee, some products will be extended longer time for life span.
4. For tender cooperation, it is welcome to discuss the detail in between.
