Integrated Automatic Changeover Switch with LCD Display Control (QKGLD-250)

Product Description

Product Overview
QKGLD Automatic Transfer Switch (ATSE) is an automatic transfer switch that integrates switch and logic control, without the need for an external controller, and truly realizes mechatronics, with voltage detection, frequency detection, communication interface, electrical, mechanical interlock and other functions, which can realize automatic, electric remote and emergency manual control.
The operation is realized by the logic control board to manage the operation of the motor and gearbox with various logic commands. The motor is an acceleration mechanism with a switching spring to store energy and release it instantaneously, and quickly switch on the circuit breaker or switch the circuit, and achieve safety isolation through a clearly visible state, which significantly improves the electrical and mechanical properties.
The QKGLD automatic transfer switch is designed as a plastic and metal housing, which is compact and robust. The control part of the QKGLD switch is made of plastic and metal housing. Its switch part is made of glass fiber unsaturated polyester resin, which has strong dielectric properties, protection capabilities and reliable operational safety.
This switch is suitable for the automatic conversion of the main power supply and the standby power supply of the power supply system or the automatic conversion and safety isolation of two load equipment.
This switch is beautiful, novel, concise, small in size, and full in function, making it the best choice for similar products.
Executive Standard
The dual power supply complies with IEC 60947-6-1 and GB 14048.11 Low-Voltage Switchgear and Control Equipment - Part 6: Multifunctional Appliances - Part 1 Automatic Transfer Switching Appliances.
Features:
It adopts double-row composite contact, horizontal pull mechanism, micromotor pre-energy storage and microelectronic control technology, and basically realizes zero flying fox (no arc extinguishing cover);
It adopts reliable mechanical interlocking and electrical interlocking, and adopts independent load isolation switch without components, which is safe and reliable to use;
It adopts zero-crossing technology, which can be forced to set zero in case of emergency (cut off two power supplies at the same time) to meet the needs of fire linkage;
The load isolation switch is driven by a single motor, and the switching is reliable and stable, noiseless and the impact force is small;
The operator drive motor only passes the current at the moment of load isolation switch switching, and there is no need to provide working current for steady-state operation, which saves significant energy.
The actuator load isolation switch is equipped with a mechanical interlock device, which ensures that the common and standby power supplies work reliably and do not interfere with each other;
It is equipped with obvious on-off position indication, padlock and other functions, and reliably realizes the isolation between the power supply and the load;
It has good safety performance, high degree of automation, high reliability, and a service life of more than 8,000 times;
It adopts mechatronics design, and its switching conversion is accurate, flexible and smooth. In addition, it adopts international advanced logic control technology, which enables it to have strong anti-interference ability and no external interference;
It has three kinds of stable operation (I-0-II.) of main power supply and standby power supply, main power supply and standby power supply, and disconnection of main and standby power supply (I-0-II.);
It is easy to install, and the control loop is connected by pluggable terminals;
Four operation functions: emergency manual operation, electric remote control operation, emergency disconnection operation in automatic control state, and automatic control operation.
Applications
QKGLD series automatic transfer switch is mainly used for AC 50Hz, rated voltage 400V, DC rated voltage 220V, rated current 16A to 3200A in the distribution or motor network of one main and one standby or mutual standby power switching system and the load switching of mains and generator sets. At the same time, it can be used for infrequent switching and breaking circuits and line isolation.
This product is extensively applies in power transmission and distribution systems and automation systems in important power supply places such as fire protection, hospitals, banks, and high-rise buildings that do not allow power outages.
Operation Environment
Automatic transfer switches work reliably under the following conditions:
The altitude does not exceed 2000 meters;
The ambient temperature is not higher than 40°C, not lower than -5°C, and the relative humidity is not more than 95%;
No explosion hazard medium environment;
No rain and snow invade the environment;
Note: If it is expected to be suitable for the ambient air temperature above +40°C or below -5°C~-45°C, the user should explain to the manufacturer.
Intelligent Performance
1. Three kinds of stable working positions:
Common closing: common closing, standby opening. Standby closing: common opening, standby closing. Double opening: common opening, standby opening.
2. Two optional automatic working modes
Automatic charge and automatic recovery: when the standby power is closed and the common power supply returns to normal, the switch will automatically switch to normal closure regardless of whether the standby power supply is normal.
Automatic charge and manual recovery: when the standby power is closed and the common power supply returns to normal, and the standby power supply is normal, the switch does not convert, only when the standby power supply is abnormal, the switch will automatically switch to normal.
3. Four conversion control modes
Automatic control: The controller automatically converts to the appropriate working position according to the current voltage condition and the set working mode.
Manual control: when the power supply is normal, the switch can be converted to any working position by pressing the button.
Manual control: After the key is hit to the manual position, it can be operated manually with the handle.
Remote control: Through the remote programmable input signal or 485 communication port, the control switch is switched to the required working position.
4. Product function: real-time monitoring and display of operating parameters, real-time transfer switch position and alarm. Under-voltage, over-voltage, and phase loss protection functions prevent the faulty power supply from supplying power to the load. Self-diagnosis and fault alarm function.
5. Optional functions: fire double opening alarm, automatic control of power generation, two sets of programabe signal output elays, power indication, communiction
 

Main Technical Parameters:
1. Usage Category: AC-33B, Typical use is infrequent operation of motor loads or mixed loads containing motors, resistive loads, and incandescent lamp loads of less than 30%.
2. Rated frequency: 50Hz.
3. Other technical parameters are shown in Table 1.

Agree on the heating current Ith		20A	40A	63A	80A	100A	125A	160A	250A	400A	630A	800A	1000A			1250A	1600A
Rated insulation voltage Ui		750V								1000V
Rated impulse withstand voltage Uimp		8KV								12KV
Rated operating voltage Ue		AC440V
Rated working current Ie	AC-31A	20	40	63	80	100	125	160	250	400	630	800	1000			1250	1600
	AC-35A	20	40	63	80	100	125	160	250	400	630	800	1000			1000	1600
	AC-33A	20	40	63	80	100	125	160	250	400	400	630	800			800	1000
Rated turn-on capacity		10Ie
Rated breaking capacity		8Ie
Rated to limit short-circuit current		100KA								70KA					100KA		120KA
Rated short-time withstand current 1S		7KA						9KA		13KA		26KA			50KA
Conversion time I.- II or II.- I.		0.45S								0.6S		1.2S
Control the power supply voltage		DC24V, 48V, 110V           AC220V
Motor energy consumption
Rated control voltage	Initiate	300W						325W		355W		400W		440W
	Normal	55W						62W		74W		90W		98W
Weight (kg) 4 poles		7.0	7.2	7.2	7.2	7.5	7.5	8.8	9.0	16.5	17	32		36		40	43