System Overview
Foreword
(1) According to the special requirements of users on site, in the agreement the technical standards of KW2800(2800KW/3500KVA) Resistive Inductive Load Bank (hereinafter referred to as "system") and its accessories are proposed including their function, performance, usage, structure, installation and test to provide users with a high efficient and reliable choice, in order to meet the need for generator load test.
(2) The system consists of 1 sets of 3500KVA Load Bank, The resistive power is 2800KW, the inductive power is 2100KVAR. The system is made up of two parts of measurement & control and load, mainly including the medium voltage dry type AC load bank, automatic data acquisition system, automatically loading and unloading control system, the cooling device, auxiliary control, remote control box and PC software and so on.
(3)This system, which is of independent research and development of electricity load test equipment by our technology, combining high voltage dry type load module with the automatic measurement and control module, with excellent insulation protection performance, it can detect generator output power and load capacity, full load and overload test.
The system can be used with a computer to realize the intelligent control, automatically completing the special test to all electrical parameters of generating set and generating tables, graphs, and supporting the print, release from the cumbersome manual operation to provide scientific and efficient detection means for the large power high voltage generating sets.
(4) All the schematic diagrams of this agreement are for reference only please in kind prevail.
System Constitution

System Characteristics
1.The system is a self-developed device used for electricity load testing by KINGWAY Technology. It perfectly combines the high voltage dry type load module and measurement and control module, precisely test output power and load performance of kinds of generator set.
System mainly consists of resistance load, data collecting, control system, cooling device, etc. The system can test output power and load performance of generator sets.
2. System can load power in rated range, measure generator steady-state 3 phase voltage, current, active power, power factor, frequency, and running time, and simulate the generator set real load working state. Power input using sectional type, energy dissipation type load, forced-air cooling, 3 phase fan decentralized supply air, air-flow is sufficient and low noise.
3. System can work with PC software to realize intelligent operation, automatically finish the parameters testing, and create testing data table, curves and reports that can be printed, reduce a lot of manual operation.
Supply List
The following form presents the accessories provided when we make shipment.
|
Items |
Quantity |
Remark |
|
KW2800(2800KW/3500KVA) RL Load Bank |
1 set |
Container structure |
|
Remote controller |
1 |
Portable aluminum alloy box |
|
Remote control line |
1 |
100 meters |
|
RS485 |
1 |
100 meters |
|
RS485/RS232/USB Converter |
1 |
|
|
Documents accompanied with shipment |
Quantity |
Remark |
|
Products Instruction |
1 |
|
|
Data Processing Software |
1 |
|
|
Certification |
1 |
|
|
Warranty Card |
1 |
12 months |
|
Packing List |
1 |
|
|
Receiving Apron |
1 |
|
|
Testing Report |
1 |
Manufacturing Standards (Part)
Design of intelligent test system of generator unit, production and services are in strict accordance with the GB/T19001-2008 "quality management system" requirements, and refer to the following standards. Some standards may not be suitable for practical applications, the technical agreement production plan system finally to agreed prevail.
|
KINGWAY Enterprise standard ( Initiatives in loadbank industry in China) |
|
|
Q/01KX001-2010 |
Dry-type AC load bank |
|
National standards |
|
|
GB/T 2820.5-2009 |
Reciprocating internal combustion engine driven alternating current generating sets-part fifth: generator |
|
GB/T 13032-2010 |
Marine diesel generator |
|
GB/T 1029-2005 |
3 phase synchronous moter test method |
|
GB 14711-2006 |
Safety requirements for rotating electrical motor |
|
Industry standard |
|
|
JB/T 10303-2001 |
Generator technical condition |
|
IPS-M-EL-138 |
Synchronous generator standard 1994 |
Main Technology Advantages
KINGWAY Load Bank scientific and technology level is in leading position in this industry, besides general functions, it has following unique advantages:
High Power Load: high load power density, large capacity of single set, parallel running to finish super power testing, and realize tens of megawatts of power loading.
Accurate Data: with high precision data collection module and measuring meter, related equipment has passed the certification by CMA (China Metrology Accreditation) qualification testing institution, and ensures the reliability of data.
Flexible Control Mode: based on different using habit, several control modes as following can be choose, local panel operation, remote box controlling, and intelligent software.
Intelligent Loading: after setting generator rated power in software, system realize rapid loading through preset proportion, automatically and continuously load multiple power value and common tests, like stepping, full load, and over load, so that improve working efficiency.
High Efficiency Data Management: display real-time testing data, generate curves graphs automatically, also can put data into storage. According to generator set No. set up testing file, support to query at any time, and improve data management efficiency.
Comprehensive Protection Function: multiple protection, like over temperature, smoke. When in danger, automatically terminate the test and give alarm to protect safety of personnel and equipment.
Stable Running: with the latest generation control module as the core, a sharp rise in system response speed and anti-interference performance, avoid function failure in complex electrical environment, and ensure system running stably and reliably.
New Load Bank Technology: using the international advanced AC load bank technology, overcome the old water bank defects, such as bear bumpy, unable to use when go to sea, realize Mooring Trial and Sea Trail, and simulate the real working condition of generator running.
Mature Manufacturing Technology: load element using excellent anti-corrosion materials; waterproof insulation container packaging, suitable for adverse environment such as ocean. Internal layout is reasonable, air channel is clear, rapid heat emission, and satisfy continuous working need.
Functions and Parameters
Measuring Function
Steady-state Test: load power in rated range, measure generator steady-state 3 phase voltage, current, active power, reactive power, apparent power, power factor, frequency, and running time.
Control Mode
(1) Control Mode: local, remote or intelligent control(software) for choosing.
(2) Local Control: local control panel with several power steps, load or unload by switch on-off and read parameter values from measuring meter.
(3) Remote Control:through the switch in the remote control box, control the load over a long distance.
(4) Intelligent Control: through data processing software, realize all the test functions, display, record and manage the testing data, and generate curves, graphs and tables can be printed.
(5) Control Mode Interlock: with control mode switch, no matter chooses which mode, operation of other mode is invalid, avoid the clash.
Intelligent Load Function
(1) Communication Mode: using photoelectric isolated RS485 communication serial port connect to PC, and with great anti-interference performance to make system control stable. Through converts like USB or RS232 realize communication protocol conversion.
(2) Load Mode: steady-state load (manual load, preset load and automatic load) and transient state load (instant load and instant unload).
(3) Manual Load: input power and power factor, and load according to the preset value.
(4) Preset Load: input generator related parameters, then choose the preset proportion from 0% 25%, 50%, 75%, 100% or other available order and calculate the power value automatically and realize rapid load.
(5) Automatic Load: set several load stages and duration, then complete the process according this stages automatically. Pause at any time or start to next stage in the load process.
(6) Parallel Test: several load banks work in parallel, the parallel test via software. Parameters of each set can be displayed in each meter and total parameter values can be displayed and recorded.
Intelligent Load Function
(1) Communication Mode: using photoelectric isolated RS485 communication serial port connect to PC, and with great anti-interference performance to make system control stable. Through converts like USB or RS232 realize communication protocol conversion.
(2) Load Mode: steady-state load (manual load, preset load and automatic load) and transient state load (instant load and instant unload).
(3) Manual Load: input power and power factor, and load according to the preset value.
(4) Preset Load: input generator related parameters, then choose the preset proportion from 0% 25%, 50%, 75%, 100% or other available order and calculate the power value automatically and realize rapid load.
(5) Automatic Load: set several load stages and duration, then complete the process according this stages automatically. Pause at any time or start to next stage in the load process.
(6) Parallel Test: several load banks work in parallel, the parallel test via software. Parameters of each set can be displayed in each meter and total parameter values can be displayed and recorded.
Data Manage Function
(1) Real-time Monitor: through software display main parameter value, such as voltage, current, power, power factor, frequency and time.
(2) Data Collection Interval: the minimum steady-state data resolving time is 1 second, and the minimum transient data resolving time is 40μs.
(3) Stable Data Comparisons: the max value and min value of all the parameters in steady-state test are listed in software interface; it is convenient for user to compare.
(4) Data Save and Query: all test data are saved in the software, and according to generator set number easy to fast query in the history test data.
(5) Graphical Display: show real-time or history test data, and support to print curve and graph as follows:
1) Voltage, current, frequency and power curves in real-time; 2) voltage curve;
3) Current curve; 4) power curve; 5) frequency curve; 6) power factor curve;
(6) Test Report: display and support to print reports as follow:
1)Test report of generator set steady-state performance; 2)testing data report
(7) Data Format: all curves and graphs are outputted as".jpg"format, testing reports are outputted as".xls"format, and can be printed.
Protection
(1) Overvoltage Protection: the input load voltage is over the safe threshold value, system unload automatically and give an alarm.
(2) Short Circuit Protection and Over Current Protection: when short circuit, fuses in the load bank can insure to unload automatically.
(3) Overheating Protection: temperature is over the safe threshold value, system unload automatically and give an alarm.
(4) Fan Delivery Protection: insufficient air volume with any fan 2450m³/h, system unload automatically and give an alarm.
(5) Emergency Stop: manually press the Emergency Stop switch on the panel, then load bank is in locked state, and cannot do any operation.
(6) Protection Switch: some protection with switch, when misinformation or in special need, user can close the corresponding protection function temporarily.
(7) Safety Monitor: through indicator lights on main interface, user can monitor system state. When system abnormally stop and protect, software interface prompt the cause immediately.
Technical Parameter
|
Rating voltage/frequency |
400V, 3 phase 4 wire 50Hz |
|
Max Load Power |
Apparent Power: 3500KVA Resistive Load: 2800KW Inductive Load: 2100KVAR |
|
Load Resolution |
Resistive Load: 22 steps 1KW, 2KW, 2KW, 5KW,10KW,10KW, 20KW, 50KW,100KW,200KW, 200KW,200KW, 200KW, 200KW, 200KW, 200KW, 200KW, 200KW, 200KW, 200KW, 200KW, 200KW, Inductive Load: 19 steps 1KVAR,2 KVAR, 2KVAR, 5KVAR, 10KVAR, 10KVAR, 20KVAR, 50KVAR, 100KVAR,100KVAR, 200KVAR, 200KVAR, 200KVAR, 200KVAR, 200KVAR,200KVAR,200KVAR,200KVAR,200KVAR |
|
Power Factor |
0.8(lag) |
|
Load Tolerance (each step) |
±5% |
|
Load Tolerance (overall) |
±3% |
|
Fan &Control Voltage |
External AC 3 phase 4 line, 380V/50Hz |
|
Wire Connection |
Load bank input--Copper bar (star coupling "Y") Control power input--Connector-bar |
|
Communication Interface |
RS485,RS232 |
|
Insulation |
F |
|
Max Protection Grade |
IP54 |
|
Duty Cycle |
Continuous |
|
Cooling |
Forced air cooling, by Axial Fan; horizontal inlet air, vertical exhaust cooling |
|
Enclosure |
Container type,with a ladder, air inlet and outlet with mesh enclosure and protection door |
|
Internal Lighting |
Adequate internal lighting will be provided |
|
Transportation |
Hoisting, there are lifting lug in top of casing |
|
Color |
Grey RAL7035 or as required |
|
Dimensions |
6058mm×2350mm×2591mm(L×W×H) |
|
Operating Environment Parameter |
|
|
Workplace |
Outdoor |
|
Ambient Temperature |
-10℃~+50℃ |
|
Relative Humidity |
≤95% |
|
Atmospheric Pressure |
86~106kPa |
|
Brands of Main Components |
|
|
Contactor |
Schneider |
|
Fuse |
Miro |
|
PLC |
Siemens |
|
Alloy Resistor |
KINGWAY |
|
Data Processing Software |
KINGWAY |

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