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High Voltage AC Vacuum Load Switch-Fuse Combination Apparatus - FTD9-12RD from China Suppliers and Factory
Detail introduction
This product is suitable for three-phase AC 50/60HZ, 12KV power systems, used in conjunction with complete distribution equipment, ring main unit, modular substations, etc. The layout, technical characteristics, appearance, and dimensions of this combination electrical appliance are basically the same as those of the FTD9-12D vacuum load switch, and it is particularly suitable for installation in small and limited spaces.
Quality standard
This product is complied with the following standards:
- GB/T16926 High voltage AC load switch- fuse combination device
- NB/T10283 Guidelines for Testing High Voltage AC Load Switch Fuse Combination Electrical Appliances
- IEC62271-105 High voltage switchgear and control equipment - Part 105: 1KV~52KV AC load switch fuse combination
Service Conditions
- Environmental temperature: - 25℃ ~ +40℃;
- Altitude: ≤ 1000m;
-
Relative humidity:
- Daily average relative humidity ≤ 95%
- Monthly average relative humidity ≤ 90%
- Daily average vapor pressure ≤ 2.2x10-3 MPa
- Monthly average vapor pressure ≤ 1.8x10-3MPa;
- Seismic grade: seismic intensity ≤ 8;
- The applicable location is free from dripping water, flammable and explosive hazards, chemical corrosive gases, and severe vibrations.
※Note: When the usage environment deviates from normal usage conditions, please consult with our company to determine.
Technical Date
| Item | Unit |
Parameter |
|
Combination device |
|||
| Rated frequency | Hz |
50/60 |
|
| Rated voltage | kV |
12 |
|
| Rated power frequency withstand voltage (1 minute, r.m.s) | Phase to phase and phase to ground | KV |
42 |
| Isolation fracture | 48 |
||
| Control and auxiliary circuits | 2 |
||
| Rated lightning impulse withstand voltage (peak) | Phase to phase and phase to ground | kV |
75 |
| Isolation fracture | 85 |
||
| Rated current | A |
Depends on the fuse |
|
| Rated short-circuit breaking current (r.m.s) | kA |
Depends on the fuse |
|
| Rated short-time withstand current and time | kA/s |
/ |
|
| Rated peak withstand current | kA |
/ |
|
| Rated short-circuit making current (peak) | kA |
Depends on the fuse |
|
| Rated breaking current of single/back-to-back capacitor group | A |
/ |
|
| Rated capacitor bank making current | kA |
/ |
|
| Rated handover (transfer) current | A |
3150 |
|
| Mechanical life | Times |
5000 |
|
| Main circuit resistance of each phase | mΩ |
≤250 |
|
| Clearance between open contacts | mm |
9±1 |
|
| Contacting travel | mm |
5.5±1 |
|
| Contact closing bounce time | mm |
/ |
|
| Three-phase asynchronous closing and opening | ms |
≤2 |
|
| Average opening speed (contact just opened -6mm) | m/s |
0.9-1.3 |
|
| Average closing speed (contact just opened -6mm) | m/s |
/ |
|
| Rated contact pressure | N |
1000±100 |
|
| Opening time (at rated voltage) | ms |
/ |
|
| Closing time (at rated voltage) | ms |
/ |
|
| Rated operating sequence | / |
||
Typical outline dimensions (fit) and structural diagram
FTD9-12R (inter-phase distance P=210) outline dimension diagram of vacuum load switch-fuse combination apparatus
(this diagram shows the product in the upright position, and the product can also be installed in an inverted position.)
FTD9-12RD (inter-phase distance P=210) outline dimension diagram of vacuum load switch-fuse combination apparatus
(this diagram shows the product in the upright position, and the product can also be installed in an inverted position.)
Frequently Asked Questions (FAQ)
What power systems is this combination electrical appliance suitable for?
This product is suitable for three-phase AC 50/60HZ, 12KV power systems, and is typically used in conjunction with complete distribution equipment, ring main units, and modular substations.
What quality and manufacturing standards does this product comply with?
The product complies with GB/T16926 (High voltage AC load switch-fuse combination device), NB/T10283 (Guidelines for Testing High Voltage AC Load Switch Fuse Combination Electrical Appliances), and IEC62271-105 (Part 105: 1KV~52KV AC load switch fuse combination) standards.
What are the normal environmental service conditions for this device?
The normal service conditions include an environmental temperature range of -25℃ to +40℃, an altitude of ≤ 1000m, a seismic grade of intensity ≤ 8, and a location free from dripping water, chemical corrosive gases, severe vibrations, or flammable and explosive hazards.
What is the mechanical life and rated voltage of this combination device?
The combination device has a rated voltage of 12kV and is designed for a mechanical life of 5000 operations.
Can this vacuum load switch-fuse combination apparatus be installed in different positions?
Yes, while the structural diagrams illustrate the product in an upright position, it can also be safely installed in an inverted position depending on your installation requirements.
What should be done if the operating environment deviates from the specified service conditions?
When your specific installation or usage environment deviates from the normal service conditions (such as extreme temperatures or higher altitudes), please consult directly with our company to determine the suitability and layout adjustments.