The FN11 series indoor high-pressure compressed air load switch is a latest improved compressed air load switch. All conductors are fixed in an insulation frame, and the insulation is made of high-strength, non combustible unsaturated polyester SMC material, which has the characteristics of long electrical life, high transfer current, reliable stability, easy operation, high insulation level, and strong serialization. In the case where the main structure is completely identical, it can be divided into:
1. Load switch
2. Load switch fuse combination device
3. The three position isolation switch, among which the load switch can be divided into two types: grounded and ungrounded switches. The operating mechanism includes manual and electric mechanisms.
The FN11-12 series household high-voltage compressed air load switch is assembled in the HXGN-12 metal enclosed ring main switch cabinet and box type substation, which can form numerous wiring schemes to meet various requirements of users for control, protection, metering, etc. Ring network power supply enables users within the ring network system to enjoy two or more loop power supplies, with one as the main power supply loop and the other as the backup power supply loop, providing comprehensive services.
HXGN-12 metal enclosed box type load switchgear is an indoor complete distribution device with a rated voltage of 3-12Kv and a rated frequency of 50Hz for three-phase AC. Suitable for power distribution systems in factories, enterprises, residential areas, residential communities, high-rise buildings, and mining ports. The ring main unit plays a role in receiving, distributing, and controlling electrical energy, as well as protecting the safe operation of electrical equipment.
Main technical parameters of FN11 series indoor high-pressure compressed air load switch:
serial number |
name |
unit |
FN11-12 FN11-12R(T) |
| one |
rated voltage |
kV |
twelve |
| two |
rated frequency |
Hz |
fifty |
| three |
rated current |
A |
The maximum rated current of the fuse equipped with 400 is 100A and 125A |
| four |
Rated Active load breaking current |
A |
400/630 |
| five |
Rated closed-loop breaking current |
A |
400/630 |
| six |
5% rated active load breaking current |
A |
20/31.5 |
| seven |
Rated cable charging current |
A |
ten |
| eight |
Rated short-time withstand current (thermal stability current)/duration |
kA/s |
20/2 |
| nine |
Rated short-time withstand current (thermal stability current)/duration of grounding switch |
kA/s |
16/2 |
| ten |
Rated peak withstand current (dynamic stability current) |
kA |
fifty |
| eleven |
Rated breaking transfer current |
A |
------- 1000 |
| twelve |
Rated short-circuit breaking current (current limiting fuse) |
kA |
------- 31.5 |
| thirteen |
Lim power frequency withstand voltage (effective value) to ground, phase/isolation fracture |
kV/kV |
42/48 |
| fourteen |
Full wave lightning impulse withstand voltage (peak) to ground, phase/isolation fracture |
kV/kV |
75/85 |
| fifteen |
The time for triggering the switch when the fuse is blown |
ms |
------- 35+five |
| sixteen |
When the fuse is blown, it impacts the output energy |
J (joules) |
------- 1 |
| seventeen |
mechanical life |
time |
two thousand |
| eighteen |
Load switch opening and closing operating torque |
N.m |
ninety |
| nineteen |
Grounding knife opening and closing operation torque |
N.m |
twenty |
| twenty |
Rated opening operation voltage |
V |
~220/~110 |
Selection of High Voltage Current Limiting Fuses
Transformer capacity (kva) |
one hundred |
one hundred and twenty-five |
one hundred and sixty |
two hundred |
two hundred and fifty |
300/315 |
four hundred |
five hundred |
six hundred and thirty |
750/850 |
one thousand |
one thousand two hundred and fifty |
one thousand and six hundred |
| Rated current of fuse (a) |
sixteen |
sixteen |
sixteen |
twenty |
twenty-five |
thirty-one point five |
forty |
fifty |
sixty-three |
eighty |
eighty |
one hundred |
one hundred and twenty-five |
The recommended model for using fuses is XRNT-12 high-voltage current limiting fuse
The impact output energy of the fuse is 1J (joules) medium