35 - 220KV SF6 Voltage Transformer
35 - 220KV SF6 Voltage Transformer
35 - 220KV SF6 Voltage Transformer
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The JDQXF-35~220 series of voltage transformer is used in a power system for voltage measurement, electric power metering, and relay protection.
Conforming to the standard of GB1207-2006 "electromagnetic voltage transformer", it is a patented product developed independently by our company
and the patent number is ZL 2008 2 0233230.2.
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1. Overview
The JDQXF-35~220 series of voltage transformer is used in a power system for voltage measurement, electric power metering, and relay protection.
Conforming to the standard of GB1207-2006 "electromagnetic voltage transformer", it is a patented product developed independently by our company
and the patent number is ZL 2008 2 0233230.2.
2. Structure
An independent 35~220KV SF6 voltage transformer is composed of the enclosure, main body, insulation bushing, primary connection board, and
secondary terminal box. The 35~220KV SF6 voltage transformer for GIS consists of enclosure, main body, basin-type insulators, electric connectors,
0918 869terminal
and secondary 638box.
(tel:0918 869 638)
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22. 3. 11. 오후 2:57 35~220KV SF6 Voltage Transformer
The product main body adopts a single-stage structure. The SF6 gas and insulation film enable the product to withstand very high voltage. The main
body is fixed on the connecting flange and is placed into the enclosure. The outgoing line of secondary windings is guided into the secondary terminal
box through the wiring board. There are terminals for wiring inside the terminal box.
In addition to holding the main body and fixing, the enclosure is also provided with a SF6 density controller or pressure gauge. The SF6 density
controller has temperature compensation function and it also has two connection points for supplying alarm signals. It can be used for remote
monitoring of the gas pressure inside the 35~220KV SF6 voltage transformer. There are two kinds of bushing for selection: porcelain bushing and
silicone rubber composite bushing.
3. Working Conditions
4. Features
a. Our JDQXF-35~220 series of voltage transformer uses SF6 gas and insulating film for main insulation. The insulating film has high dielectric
strength. SF6 gas has stable and reliable insulation performance with no worries of aging. SF6 also has self-recovery capability. Even at zero gauge
pressure, the product can still run at the rated voltage for a short time.
b. Using SF6 gas for insulation realizes oil free, which avoids polluting the environment and reduces fire risks. Also, SF6 is compressible and the design
strength of the product housing and bushing is 2.5 times the failure strength. Hence, even if the product fails, it will not explode and endanger the safe
operation of peripheral facilities.
c. With the annual leakage rate not more than 0.5%, our product is maintenance-free within 10 years. It is also equipped with a SF6 density controller
which can achieve online monitoring of the product.
d. Adopting magnetically permeable material, advanced technology, and excellent insulation design, our 35~220KV SF6 voltage transformer has
capacitive volt-ampere characteristics, which can effectively prevent the potential ferromagnetic resonance caused by voltage change in the power
system.
e. Since the product adopts a vertical structure and all connections are rigid, it has outstanding resistance to mechanical shock and earthquake.
Note:
c. If the product parameter values are inconsistent with the ones listed in the above table, please refer to the nameplate.
Related Names
Combined Current/Voltage Transformer (/combined- 35~220KV Oil Immersed Current Transformer (/35- 35~550KV SF6 Current Transform
current-voltage-transformer.html) 220kv-oil-immersed-current-transformer.html) current-transformer.h
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