100KW-500KW Load Bank

1. Protection function
(1) Emergency stop: It can be manually unloaded with one button, and it cannot be loaded in the
emergency stop locked state.
(2) Temperature protection: When the load temperature exceeds the safety threshold, it will
automatically unload and give an alarm.
(3) Overvoltage protection: When the voltage of the detection system exceeds the safety
threshold, an overvoltage alarm is issued and unloaded in time.
(4) Over-current protection: When the detection system voltage exceeds the safety threshold, an
over-current alarm is issued and unloaded in time.
(5) Short circuit protection: The main circuit of the load is equipped with a fuse, which is
automatically unloaded in the event of a short circuit.
(6) Smoke protection: When there is smoke in the case, it will automatically unload and alarm.

(7) Fan interlock protection: Before turning on the fan power switch, the load cannot be loaded.

(8) Fan air volume protection: When the air volume of the fan is insufficient, it will automatically
unload and give an alarm.
(9) Fan phase sequence automatic conversion protection: When the control power line is not connected in the correct phase sequence, the three-phase fan can also run in the normal direction.

2. Cabinet structure
The cabinet is made of containers, and the cabinet design fully considers heat dissipation and maintenance. The internal layout of the box: the resistors and various accessories are fixed and placed in layers. The placement of the resistance layer focuses on the heat dissipation effect, and all connecting wires are insulated to ensure that the wiring is not affected by high temperature. The real object will adopt side air inlet and side air outlet.

3. Electrical control module
The control module adopts PLC and its control module PLC has high reliability and strong anti-interference ability. Reliability is the key to electrical equipment. In the process of PLC production, due to the use of modern large-scale integrated circuit technology and strict production technology to manufacture internal circuits, PLC has the anti-interference ability of cash, and the average time between failures of using PLC is 20000 More than hours. The PLC maintenance workload is small and the maintenance is convenient. PLC uses storage logic instead of wiring logic, which greatly reduces the external wiring of control equipment. At the same time, it has a strong self-diagnosis ability, and can detect its own faults at any time and display it to the technicians. Connect the load body through the quick socket and select the remote control button to remotely control the load.

4. Stainless steel resistor
The resistance tube uses high-quality raw materials and adopts advanced scientific technology.
The resistance tube has the technical characteristics of acid and alkali resistance, salt spray resistance, good insulation performance, high heat dissipation performance, strong stability, and long service life. It can be continuous in rainy days. use. Each resistance element: insulation resistance above DC500V 100MΩ withstand voltage AC2500V for 1 minute, the resistance error of each resistance tube: ±2%, the operating temperature is 1/3 of the design temperature, and there is no red heat when working for a long time. Provide a three-year service life quality commitment.

5. Wire and installation process
The busbars shall use the corresponding specifications of copper bars in accordance with the national standard. The high-temperature connecting wires shall be selected according to the phase current of the power consumption device. The cross-sectional area of the control wires shall not be less than 1.5mm2. The carrying capacity of the remaining wires is designed according to the national standard.

6. Cooling system
The heat dissipation system is composed of a fan and an automatic protection device, which can quickly dissipate the heat converted by the power module and keep the temperature inside the box suitable.
(1) The load adopts low-noise waterproof axial flow fan, aviation aluminum fan blade, high strength, corrosion resistance, and durable.
(2) The average wind speed at the air outlet is 8~10m/s, the measured working noise is ≤80dB (1M), the air volume is sufficient, and the noise is controlled.
(3) Multiple temperature sensors are installed at the load part and the air outlet position, which can automatically cut off the load when the temperature reaches the warning value to ensure that the load will not be damaged due to excessive temperature. The above are the main components of the equipment. We use internationally advanced and reliable components with many years of experience to ensure the quality of the system.

7. Technical Specification

System composition
Rated Capacity	500KW
Rated voltage	AC240V/AC480V
Frequency	50/60HZ
Loading accuracy	±3%；
Load connection	3P4W
Minimum loading resolution	1KW
Parameter measurement accuracy	Parameters: voltage, current, frequency, power, power factor
	0.5 class
Insulation class	F；
Way of working	continuously working;
Power supply	AC120V ， 50Hz，3P5W ；
cooling method	Forced air cooling (air enters from the side and exhausts the air); the top faces the rear
Load step	1kW ~ 500kW can be adjusted arbitrarily, the smallest adjustable is 1KW
	see 4.1.3 load classification for details
way to control	Touch screen manual control/host computer control: reserved Ethernet/RS485 access to remote system control.
Parameter display	Display voltage, current, power, air inlet and outlet temperature, door limit and reserved sampling dry contact
Protective function	Short circuit, over voltage, over current, high temperature, air volume, emergency shutdown protection
Noise	Working noise ≤85dB (3M)
Dimensions	W1800mm×D1200mm×H2000mm
Weight	1300kG
Cabinet color	RAL6000,PATINA GREEN
Move method	The box body has load-bearing lifting holes and plug-in jacks, which meet the conditions of long-distance car transportation;
Incoming circuit breaker	Does not contain
Switching contactor	ABB
Cabinet material	Cold plate spray
Protection level	IP54
Ambient temperature	－15℃～+55℃；
Operating altitude	≤2500m；
Relative humidity	≤95%RH；
Atmospheric pressure	86-106Kpa；
Damping and shockproof measures	Anti loose measures such as spring frame washer are adopted for all parts