Marine Load Bank
Rata 2500kW marine load bank is a low voltage load bank produced by our company for a large power supply manufacturing factory in China. The medium voltage load bank is designed to be 9.5m long.
The product can meet the various needs of customers and is increasingly used in the global market.
PRODUCT OVERVIEW
Rata 2500kW marine load bank is a low voltage load bank produced by our company for a large power supply manufacturing factory in China. The medium voltage load bank is designed to be 9.5m long. The voltage rise of 400v-10kv is realized through dry-type transformer, and the voltage rise of 400v-690v is realized through star delta conversion. The medium voltage load bank has mature and reliable products, high stability and long durability, which are highly praised by cooperative customers
PRODUCT PICTURE
PRODUCT PICTURE
APPLICATION SCENARIO
PARTIAL PARAMETERS
Note: all parameters are for reference only and can be customized | ||
Product name | marine load bank | |
Specifications | R2500kW/L2000kvar/400V/690V | |
Load bank | Formation | Outdoor container type,resistive load,inductive load,data acquisition,electrical control part,heat dissipation device and load protection control |
Test voltage | According to customer needs | |
Test frequency | 50Hz/60Hz | |
Load character | Resistive inductive load,to meet the needs of multiple parallel work | |
Power factor | 0.8 | |
Load connection | Copper bar | |
Loading accuracy | ±3% | |
Three phase balance | Inbalance: less than or equal to 3% | |
Working mode | Continuous work | |
Power supply | TN-C,380V/50Hz | |
Cooling mode | Forced air cooling, side air outlet or top air outlet | |
Insulation class | F | |
Accuracy | The sampling accuracy of the instrument is 0.2; | |
Load expansion | Parallel expansion of multiple load containers | |
Voltage rising mode | Realized by transformer | |
Load protection | Short circuit, over voltage, over current, high temperature, air volume, emergency stop protection | |
Resistive | Minimum step | 1kW |
Load step | According to customer needs | |
Resistance tube | Insulation impedance of each resistance element DC1000V 20M Ω above, | |
Resistive material | Special alloy resistor | |
Cold and hot state change | less than or equal to 2% | |
Inductive load | Minimum step | 1kvar |
Load step | According to customer needs | |
Inductor | Withstand voltage AC3000V 1 minute, | |
Material | Aluminum reactor or copper reactor | |
Other | Protection level | IP56 when not in use, IP20 when in use |
Use occasion | Outdoors | |
Transport | The box body has a load-bearing lifting hole, which meets the requirements of long-distance transportation | |
Color | Customized | |
Standard | Meet international standard, ship standard, military standard and telecommunication standard | |
Color | Customized | |
Ambient temperature | -20℃ to 50℃ | |
Humidity | Up to 100% | |
Altitude | Up to 2500m | |
Atmospheric pressure | 86 to 106kPa | |
MORE SPECIFICATIONS
Note: all parameters are for reference only and can be customized | |||||||
Active power (kW) | Inductive power (kvar) | Apparent power (kVA) | Voltage (kV) | P.F. | Frequency (Hz) | Size (mm,L*W*H) | Weight (Kg) |
100 | 75 | 125 | 0.4/0.69 | 0.8 | 50/60 | 1500*1500 *1500 | 900 |
200 | 150 | 250 | 0.4/0.69 | 0.8 | 50/60 | 1700*1600 *1500 | 2000 |
300 | 225 | 375 | 0.4/0.69 | 0.8 | 50/60 | 1800*1600 *1600 | 3200 |
400 | 300 | 500 | 0.4/0.69 | 0.8 | 50/60 | 2000*2000 *2000 | 4000 |
500 | 375 | 625 | 0.4/0.69 | 0.8 | 50/60 | 2300*1800 *1800 | 5000 |
600 | 450 | 750 | 0.4/0.69 | 0.8 | 50/60 | 2500*2000 *1800 | 6000 |
800 | 600 | 1000 | 0.4/0.69 | 0.8 | 50/60 | 3000*2438 *2000 | 7000 |
1000 | 750 | 1250 | 0.4/0.69 | 0.8 | 50/60 | 3000*2438 *2500 | 8000 |
1200 | 900 | 1500 | 0.4/0.69 | 0.8 | 50/60 | 3500*2438 *2500 | 9000 |
1500 | 1125 | 1875 | 0.4/0.69 | 0.8 | 50/60 | 4000*2438 *2500 | 10000 |
1800 | 1350 | 2250 | 0.4/0.69 | 0.8 | 50/60 | 4500*2438 *2500 | 11000 |
2000 | 1500 | 2500 | 0.4/0.69 | 0.8 | 50/60 | 5000*2438 *2500 | 12000 |
2200 | 1650 | 2750 | 0.4/0.69 | 0.8 | 50/60 | 5500*2438 *2500 | 13500 |
2500 | 1875 | 3125 | 0.4/0.69 | 0.8 | 50/60 | 6000*2438 *2500 | 15000 |
3000 | 2250 | 3750 | 0.4/0.69 | 0.8 | 50/60 | 6500*2438 *2500 | 17000 |
STAR-DELTA CONNECTION
Star-delta connection
In order to meet the voltage width of the load sets (AC400V-690V), the main circuit of the load banks is connected by star-delta conversion, which can meet the use of (AC400V-690V) star-delta conversion.
Delta connection method is adopted for AC400V and star connection method is adopted for AC690V.
Star-delta conversion power conversion formula
In the load, the resistance value of the resistance is fixed and will not change with the change of frequency; Inductive reactance is related to the change of frequency. The load is based on the phase voltage of 400V and the frequency of 50Hz.
Delta connection, phase voltage 400V, frequency 50Hz:
Total active power =,
Total reactive power =.
Star connection method, line voltage 690V, frequency 50Hz, phase voltage = 690V400V ：
Total active power =,
Total reactive power =.
So, in star delta conversion, the power has the following laws:
Due to the combination of power sections, take three-phase 1kW (0.333kW per phase) and three-phase 1kvar (0.333kvar per phase) as examples:
Delta connection, line voltage 400V, phase voltage = 400V, frequency 50Hz, power of each phase is 0.333kW, 0.333kvar
Star connection method, line voltage 690V, phase voltage = 400V, frequency 50Hz, power of each phase is 0.333kW, 0.333kvar
Therefore:
● 400V50Hz delta connection active power = 690V 50Hz star connection active power,
● 400V50Hz delta connection reactive power = 690V 50Hz star connection reactive power.
HONORARY QUALIFICATION
Since its establishment, Rata has obtained 16 utility model patent certificates and 8 computer software copyright registration certificates, and has been recognized as a national high-tech enterprise.
Offered product range is extremely valued by our esteemed clients for these features.