Mainly used for AC equipment load capacity testing, aging and DC equipment discharge detection. Ac and DC cabinets are independent of each other and are connected to the corresponding AC or DC loads.
(1) basic uses
Mainly used for AC equipment load capacity testing, aging and DC equipment discharge detection. Ac and DC cabinets are independent of each other and are connected to the corresponding AC or DC loads.
(2) basic parameters.
1. Ac voltage: 380V, 50Hz.
two。. Ac rated load: resistive: 50kW, inductive: 35kVar.
3. DC voltage: 48V.
4. DC rated load: pure resistive load: 6KW.
(3) main functions.
1. Measurement and control function.
(1) any power within the rated value can be loaded, and the steady-state three-phase voltage, current, active power, reactive power, apparent power, power factor, frequency, running time and other parameters of the generator set can be measured and displayed.
(2) whether using manual switch or software control, the power value can be set first, and then the total load switch can be started, so that the load will be loaded according to the preset value, so as to avoid load fluctuation in the process of power adjustment.
(3) the load can be controlled locally or intelligently.
(4) the load is equipped with a local control panel and is divided into several power gears, which can be loaded by a switch.
(5) through the data management software on the computer to control the load, realize automatic loading, display, record and manage the test data, generate all kinds of curves and charts, and support printing.
(6) the system is equipped with a control mode selection switch. After selecting any control mode, the operation carried out by other methods is invalid and the conflict caused by multiple operations is avoided.
(7) through the local measuring instrument, the parameters such as three-phase voltage, current, active power, reactive power, apparent power, power factor, frequency and so on can be displayed.
two。. Software function.
The main results are as follows: (1) the intelligent control uses photoelectric isolated RS485 communication serial port to connect PC, which has strong anti-interference ability and ensures the stability of system control. You can also convert various communication protocols through a converter, using USB or RS232 ports to communicate.
(2) loading manually or automatically.
(3) input power and power factor, that is, load according to the specified value.
(4) during the test, the power and duration of multiple loading stages can be set, and the phase test can be carried out automatically in the preset order of 0% "25%" 50% "75%" 100% or 110%.
(5) when multiple loads are combined, the software can carry out parallel test, which can not only display and record the parameters of each load, but also display and record the total parameters of the system.
(6) in the process of testing, the main parameters such as voltage, current, power, power factor, frequency and time can be displayed in real time by software.
(7) the load status can be monitored directly through the software indicator lamp, and the reason for the shutdown can be indicated when the abnormal shutdown protection occurs.
(8) the minimum storage interval of data is 2s.
(9) the test data can be saved in the software and the historical test data can be queried at any time.
(10) can display real-time or historical test data, and support printing as the following curves and graphs: real-time voltage, current, frequency, power curve; voltage curve; current curve; power curve; frequency curve; power factor curve.
(11) with data analysis and printing software, charts and curves can be output in word document format, and test data can be output in Excel table format.
(4) Safety protection.
1. Emergency stop switch.
two。. Three-phase voltage is too high to detect, issue an alarm and stop automatically.
3. Three-phase voltage is too low to detect, issue an alarm and stop automatically.
4. Temperature detection, alarm and automatic shutdown.
5. Fan fault detection, alarm and automatic stop.
6. The over-current short-circuit protection function is safe and easy to operate, and the load circuit is equipped with a fuse to avoid damage to the equipment when the load is short-circuited or the current is too large.
7. The original part of the main power consumption is made of patented material, and there is no red heat phenomenon.
8. With multiple safety protection measures to effectively ensure the safety testing of the equipment.
(5) Technical parameters.
1. Technical parameters of AC load cabinet.
System parameters.
Rated voltage / frequency AC three-phase four-wire 380V/50Hz.
Maximum load Power Resistive load: 50kW Inductive load: 35kvar.
Load graded resistive load: divided into 7 grades, 1, 2, 2, 5, 10, 10, 20kW.
Perceptual load: divided into 7 grades, 0.5,1.5,1.5,3.5,6.5,6.5, 15kvar.
Power factor 0.8-1.
Load accuracy (per gear) ±5%.
Load accuracy (whole machine) ±3%.
Display accuracy 0.5.
Control power supply external AC single-phase 220V/50Hz.
Connection mode load power input-wiring arrangement (star connection).
Control power input-3-core socket.
Communication interface RS485, RS232.
Insulation class F.
Working mode continuous work.
The cooling mode is forced air cooling, side air in, side air out.
Transport hoisting, with load-bearing rings at the top of the chassis and casters at the bottom.
Chassis size is about 950mm × 940mm × 1650mm (length × width × height).
Subject to the final design dimensions.
Weight ≤ 150kg.
Working environment parameters.
Working temperature-10 ℃ ~ + 50 ℃.
Relative humidity ≤ 95%.
Altitude ≤ 2500 meters.
two。. Technical parameters of DC load cabinet.
System parameters.
Rated voltage DC48V.
Load power / current resistive load: 6kW.
The load is divided into 4 grades, namely, 1, 1, 2, 2kW.
Note:
When connected to other voltages, the power of each gear decreases proportionally according to Ohm's law.
Load accuracy (per gear) ±5%.
Load accuracy (whole machine) ±3%.
Display accuracy 0.5.
The control power supply is externally connected to AC single-phase 220V/50Hz, about 2kW.
Connection mode load power input-wiring row.
Control power input-three-core socket.
Communication interface RS485, RS232.
Insulation class F.
The mode of work is continuous.
The cooling mode forces the air to be cooled, the side inlet air and the side outlet air.
Transport hoisting, with load-bearing rings at the top of the chassis and casters at the bottom.
Chassis size is about 700mm × 480mm × 920mm (length × width × height).
Subject to the final design dimensions.
Weight ≤ 40kg.
Working environment parameters.
Workplace interior.
Working temperature-10 ℃ ~ + 40 ℃.
Relative humidity ≤ 95%.
Altitude ≤ 1500 meters
