TKDQ2 series automatic transfer switch
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TKDQ2 series automatic transfer switch
Product Details
Scope of Application
The TKDQ2 series automatic transfer switch is suitable for two-way power supply systems with a rated voltage of AC400V, a frequency of 50Hz, and a rated working current of up to 63A. It serves as a switching device between the normal and backup power supplies. When one power supply fails, it automatically switches between the normal and backup power supplies to ensure the continuity of power supply to important equipment, while also providing short-circuit and overload protection for the downstream load and cables. It is mainly used in low-voltage terminal distribution systems in residential, industrial, and construction fields.
Standards Compliance
IEC60947-1 GB/T 14048.1 Low-voltage switchgear and controlgear General rules
IEC60898-1 GB/T 10963.1 Electrical accessories Household and similar applications Overcurrent protection Circuit-breaker Part 1: AC circuit-breakers
IEC60947-6-1 GB/T 14048.11 Low-voltage switchgear and controlgear Multifunctional apparatus Transfer switching apparatus
Operating and Installation Conditions
The ambient air temperature should not exceed +40℃, and the 24-hour average should not exceed +35℃. The lower limit of the ambient air temperature is -5℃; Note: For operating conditions where the ambient air temperature is higher than +40℃ or lower than -5℃, users should consult with our company;
The installation altitude should not exceed 2000m;
When the highest temperature is +40℃, the relative humidity of the air should not exceed 50%. Higher relative humidity is permissible at lower temperatures, for example, 90% at 20℃. Special measures should be taken for occasional condensation due to temperature changes;
In places where there is no explosive hazard in the air and no gases, conductive dust, or other substances that could corrode metal or damage insulation;
In places free from rain and snow;
Pollution degree is level 3;
The maximum inclination for circuit-breaker installation is ±22.5°;
Installation category: The installation category for the main circuit of the circuit-breaker is AC-3, and the installation category for the auxiliary and control circuits not connected to the main circuit is III. The circuit-breaker should be installed and used according to the requirements of the product manual;
The circuit-breaker should be installed and used according to the requirements of the product manual;
Product Structural Features
The TKDQ2 series dual-power automatic transfer switch has a usage category of AC-33i8 and an electrical rating of CB. Its structure consists of two TKDB1-63 Miniature Circuit Breakers (MCBs) (three-pole or four-pole), accessories, a mechanical interlocking transmission mechanism, an intelligent controller, etc., with an integrated structure.
Its features are:
There is a gear-driven mechanical interlocking device between the two circuit-breakers to prevent both circuit-breakers from closing simultaneously;
It has short-circuit and overload protection functions, as well as overvoltage, undervoltage, and phase-loss automatic switching functions;
The product adopts a modular design, with a compact structure, small size, and easy installation;
The controller circuit design adopts separate power sampling and single-chip microcomputer control, structurally eliminating electromagnetic interference;
The product has complete functions, including starting a generator, fire linkage control, and closing/switching delay functions;
The transfer switch has three different control functions: self-starting and self-resetting (R), self-starting but not self-resetting (S), and grid-generator (F), suitable for grid-grid distribution systems and grid-generator distribution systems, respectively;
Model and Meaning
| TKD 1 |
Q 2 |
2 3 |
- | 250 4 |
/ | 3P 5 |
250A 6 |
R 7 |
Integrated 8 |
□ 9 |
| Serial Number | Description | Model Meaning |
|---|---|---|
| 1 | Enterprise code | TKD: Shandong Taikai Electrical Appliance Co., Ltd. |
| 2 | Product Category | Q: Automatic Transfer Switch |
| 3 | Design SN | 1: The actuator switch is a Miniature Circuit Breaker (MCB) |
| 4 | frame size | 63 |
| 5 | Pole number | 2P、3P、4P |
| 6 | Rated current | See the main technical parameters table |
| 7 | Controller Function Code | R: Self-starting and self-resetting, S: Self-starting but not self-resetting, F: Grid to generator |
| 8 | Product Structure | Integrated, Separated |
| 9 | Optional Functions | See the main technical parameters table |
Main Technical Parameters
| Specifications and Models | TKDQ2-63 |
|---|---|
| Rated voltage Ue(V) | AC400V 50Hz |
| Rated working current Ie(A) | 6~63A |
| Rated insulation voltage Ui(V) | AC500V |
| Pole number | 2P、3P、4P |
| Rated short-circuit breaking capacity Icn（kA） | 6kA |
| Usage Category | AC-33iB |
| Manual Operation | √ |
| Automatic Operation | √ |
| Product Structure | Integrated |
| Switching Delay (s) | 0~30s adjustable |
| Return delay (s) | 0~30s adjustable |
| Voltage detection function | Undervoltage, phase loss |
| Undervoltage conversion value | 75% × 230V |
| Circuit monitoring | A, B, C, N phases |
| Generator control | A set of passive relay dry contacts |
| Fire linkage control | Passive contact input, with a set of normally open passive signal feedback contacts |
| Conversion method | Self-starting and self-restoring, self-starting but not self-restoring, grid-generator |
| Overload, short-circuit protection | √ |
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