18000kvar Arc Furnace Oil Immersed Reactor Iron Core Series
Series Reactors are used in Electric Arc Furnaces (EAF) to provide furnace operation with longer arcs, lower currents and lower electrode consumption. Such reactors are very useful in the first melting period. With the molten scrap, the absence of the series reactor would allow higher power transfer to the EAF, reducing the tap-to-tap cycle, thus increasing productivity.
This paper proposes an active series reactor based on static power converters, which has the flexibility to dynamically change its impedance value during the steel production period. Simulation of a real plant demonstrate the effectiveness of the proposition. Through-put rating up to 160 MVAr
Model NO.: XKSSP-18000/33
Cooling Method: Oil-immersed Type Transformer
Winding Type: Multi-winding Transformer
BASIC INFO.
| Model NO. | XKSSP-18000/33 | Shape of Core | Ring |
| Cooling Method | Oil-immersed Type Transformer | Brand | Ville |
| Winding Type | Multi-winding Transformer | Transport Package | Wooden Case |
| Certification | ISO9001-2000, ISO9001 | Specification | IEC |
| Usage | Series Furnace Reactors | Trademark | Ville |
| Frequency Characteristics | High Frequency | Origin | China |
| Production Capacity | 50000 Sets/Year | HS Code | 85 |
Technical parameters
| 1.1.1 GENERAL TECHNICAL DATA | ||
| Highest voltage | 36kV | 50Hz |
| Operating voltage | 33 kV±5% | 50Hz |
| Voltage for aux. drivers | 380V | 50Hz |
| Control voltage | 220V | 50Hz |
| Interlock voltage | 220V | 50Hz |
| PLC signals | 24V | DC |
| Ambient temperature max./min. | 45 / - 10 | Deg. C |
| Altitude | 1500 | m |
| Humidity | 80 | % |
| 1.1.2 TRANSFORMER DATA | ||
| Operating voltage | 33kV±5% | |
| Frequency | 50Hz ±1% | |
| Operation | Continuously | |
| EAF transformer rated capacity | MVA (+ 20% Overload) | |
| Rated current | 2449.4 A (+ 20% Overload) | |
| Reactor Rated Power | 18 MAVR (25.92 MVA Overload) | |
| Reactance in normal tap | 1 Ω | |
| Number and ratio of taps | 6 taps: 100%-80%-60%-40%-20%-0 |
|
| Insulation level Winding: Um: AC: BIL: |
Full insulation HV 52 kV 95 kV 250 kV |
|
| Protection level | IP54 | |
| Vector group | III | |
| System short circuit capacity | 1500 MVA | |
| Short circuit duration | 6 sec | |
| Short circuit times | 2.5 times | |
| Regulation method | Off circuit | |
| Type of tap changer | NLTC Off -circuit motor drive | |
| Manufacturer | Shanghai Huaming / China (ZUNYI) | |
| Model | 2*ZWL III-1600/40- 6 taps | |
| Number of taps | 6 | |
| Reactor Winding Materials | Copper | |
| Cooling Type | OFWF | |
