Vacuum load break switch FZ(R)N25BEL-12D
There are two designs of LBS of this series: FZN25BEL-12D and FZRN25BEL-12D.
This product applies vacuum arc-extinguishing chamber. It features with reliable operation, long electric life and easy maintenance, frequent breaking and making power supply. The operation mechanism is inside switchgear combining disconnector, load break switch and earthing switch into one. It has compact dimension and small weight.
The disconnect gap is in a serial with the vacuum arc-extinguishing chamber.The large dynamic stable current and thermal stable current, the interlinked procedures assure smooth operation.
Busbar and load break switch are fully separated by cone fixed contact, insulating cover and valve. Vacuum load break switch, earthing switch, valve and cubicle door are interlocked according to "5 protections" to prevent from missopera tion. The spring storage operation mechanism can both operate by independent manual and motor to realize remote control. The CO operating power can be AC or DC source.
The disconnect gap is in a serial with the vacuum arc-extinguishing chamber.The large dynamic stable current and thermal stable current, the interlinked procedures assure smooth operation.
Busbar and load break switch are fully separated by cone fixed contact, insulating cover and valve. Vacuum load break switch, earthing switch, valve and cubicle door are interlocked according to "5 protections" to prevent from missopera tion. The spring storage operation mechanism can both operate by independent manual and motor to realize remote control. The CO operating power can be AC or DC source.
Manual operation is generally on the right of switch, but can be changed to the left or obverse according to user's requirement. It is made as per IEC62271-105.
| # | Parameter | Unit | FZN25BEL-12D/T630-20 | FZ(R)N25BEL-12D | |
|---|---|---|---|---|---|
| 1 | Rated voltage | kV | 12 | ||
| 2 | Rated current | A | 630 | ≤200 | |
| 3 | Rated frequency | Hz | 50 | ||
| 4 | Maximum voltage level | 1-min PF withstand voltage | kV | 42/48 | |
| 5 | Lightning impulse withstand voltage | kV | 75/85 | ||
| 6 | Rated thermal with stand current | kA | 20 | | |
| 7 | Thermal withstand duration | Sec | 4 | - | |
| 8 | Duration of thermal withstand of earthing blades | Sec | 2 | 2 | |
| 9 | Dynamic withstand current | kA | 50 | - | |
| 10 | Rated breaking current | A | 630 | - | |
| 11 | Rated making current | A | 630 | - | |
| 12 | Rated capacitive breaking current of cable | A | 10 | - | |
| 13 | Rated capacity of breaking of non-loade transformer | kVA | 1600 | 1600 | |
| 14 | Rated short-circuit breaking current КЗ | kA | - | 31.5 | |
| 15 | Rated through current | A | - | 2000 | |
| 16 | Type of fuse | - | SDLAJ-12 SFLAJ-12 | ||
| 17 | Duration of thermal withstand of earthing blades | Sec | 2 | 2 | |
| 18 | Voltage of control circuits | V | 220,110 | 220,110 | |
| 19 | Mechanical life (quantity of cycles) | times | 10000 | 10000 | |
| 20 | Time of fuse actuation | ms | - | 30-40 | |
| 21 | Time of LBS actuation | ms | 40-45 | 40-45 | |
LBS design
- fixed contact of 10kV input,
- bushing bell insulator,
- movable contact,
- fuse,
- mechanism,
- vacuum chamber,
- insulation valve partition (protection curtains).
Vacuum load-break switch FZ(R)N25BEL-12D is produced in accordance with IEC62271-105.
The conditions of guarantee
Warranty and service maintenance is provided by "AES-komplekt". Warranty period for equipment is 5 years. It is possible to extend warranty obligations subject to separate agreement.