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FTD9-12RD Indoor High Voltage AC Vacuum Load Switch-Fuse Combo Apparatus | China Suppliers & 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
a.
Environmental temperature: -25℃ ~ +40℃;
b.
Altitude: ≤ 1000m;
c.
Relative humidity:
Daily average relative humidity ≤ 95%
Monthly average relative humidity ≤ 90%
Daily average vapor pressure ≤ 2.2x10-3 MPa
Monthly average vapor pressure ≤ 1.8x10-3 MPa;
d.
Seismic grade: seismic intensity ≤ 8;
e.
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)
Q1:
What are the primary applications of this vacuum load switch-fuse combination apparatus?
This product is designed for three-phase AC 50/60Hz, 12KV power systems. It is commonly used in conjunction with complete distribution equipment, ring main units, and modular substations.
Q2:
Is this combination device suitable for limited installation spaces?
Yes. The layout, technical characteristics, and dimensions are basically identical to the FTD9-12D vacuum load switch, making it highly suitable for installation in small and restricted spaces.
Q3:
What standards does this combination device comply with?
The product complies with GB/T16926 (High voltage AC load switch-fuse combination device), NB/T10283 (testing guidelines), and IEC62271-105 standards.
Q4:
What are the environmental temperature limits for normal service conditions?
The normal environmental operating temperature ranges from -25℃ to +40℃. For ambient conditions outside this range, please consult the manufacturer directly.
Q5:
Can this equipment be installed in an inverted position?
Yes, according to the outline dimension diagrams (for both FTD9-12R and FTD9-12RD configurations), the product can be installed in both upright and inverted positions.
Q6:
What is the mechanical life of this combination device?
The device is rated for a mechanical life of up to 5,000 operation cycles under standard operating conditions.