Rack-mounted AC/DC Load Bank - Yangzhou Darui - Yangzhou Darui Electric Co., Ltd.

Rack-mounted AC/DC Load Bank - Yangzhou Darui

Published: 2020-08-10 15:06:06

Category: Partial Discharge Tester

Product Description

Rack-mounted AC/DC Load Bank

Darui Electric recommends
As the load part of the power unit, it uses nickel-chromium alloy with low temperature coefficient, wrapped in an anti-oxidation filling layer outside the alloy material, and composed of stainless steel sleeves. The exterior uses metal fins to increase the heat dissipation area. Even without heat dissipation, the power rod will not burn out after 48 hours of dry operation.
After production, the power rod is usually treated with full load for 24 hours, and the resistance stability error is less than ±1%. In order to ensure long-term stable use of the power load unit, we adopt a combination of small power and multiple units. By increasing the number of power units, reducing the high heat dissipation per unit area, and delaying the aging resistance - power decline.
Heat Dissipation Unit
The load heat dissipation system is complete: the load bank adopts forced air cooling, with 2 high-power axial fans installed on one side of the load part, greatly reducing the temperature during operation and ensuring reliable heat dissipation;
The fan is equipped with a speed adjustment device, and the fan speed is manually adjustable.
Fan parameters:
Voltage: 220V
Power: 80W
Speed: 2600r/m
Air volume: 17m3/min
Chassis Unit
The shell of the load bank is made of cold-rolled steel plate, with good shape stability and long service life; the appearance adopts polyester spraying, which is anti-corrosion, moisture-proof, anti-oxidation, and anti-smoke corrosion outdoors.
The air inlet and outlet of the load bank are installed with wire mesh, with aperture not exceeding 10mm, which improves the safety protection level while ensuring ventilation. The bottom of the chassis is equipped with grounding bolts.
Connection Wire Unit
The internal wiring of the load equipment uses cables, with specifications increased based on normal temperature use (1.5mm2 cables for 200W and 500W gears, 2.5mm2 cables for 1500W gear), ensuring long-term normal operation of the load equipment at high temperatures.
Control Unit
Controlled by air switches, which are convenient to use and occupy small space. The load uses 6 switches, and the fan uses 1 switch to control loading and heat dissipation.
Gear distribution: each gear is 1kW, with 6 gears in total; the fan has a separate gear, totaling 7 gears (arrangement optional). AC/DC rack-mounted load bank
Display Unit (optional)
1. Measurement accuracy: 1%±2 digits
2. Display: LCD liquid crystal display (visible screen size: 43*25mm)
4. Power consumption: <0.5VA
5. Measurement speed: about 2 times per second
6. Working power: AC220V±10%
Load Input
Method 1: Load input uses TB3504 terminal, used for three-phase 6kW. However, limited by the height of the chassis, if this input method is added, the chassis needs to be heightened. AC/DC rack-mounted load bank
Main Technical Performance and Parameters
1. Load voltage: AC220V/380V; DC270V
2. Power factor: 0.99;
3. Installed capacity: 6kW;
4. Fan voltage: AC220V;
5. Applicable temperature range: -10~60℃; humidity range: <90%RH.
6. Cooling method: forced air cooling, using axial fans, can run for a long time;
7. Working mode: controlled by air switches to control the on/off of the load, with load step control
8. Control method: manual air switch.
9. Power input method: C13 interface or TB3504
10. Chassis dimensions: 265*490*700 (subject to actual)
Load Comparison
1. Appearance Comparison
Heating plate type: completely exposed to air, prone to oxidation, resistance may change
Alloy resistor: sealed in stainless steel tube with magnesium oxide filling to prevent oxidation
2. Resistance Comparison
Heating plate type: large resistance change rate when heated, unstable
Alloy resistor: resistance is alloy material, small temperature drift coefficient during heating
3. Usage Comparison
Heating plate type: during use, the surface is electrified, which is dangerous
Alloy resistor: fully sealed, no electricity on the surface during use, safe

Note: The above information and technical parameters are compiled and released by Yangzhou Darui Electric Co., Ltd.

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Product Details

Rack-mounted AC/DC Load Bank - Yangzhou Darui