Description:
LXQ (LXQ3, LXQ4) type voltage transformer neutral point non-linear resistance harmonic elimination damper (referred to as harmonic elimination device), is installed in 6~35kV voltage transformer (referred to as PT) primary winding (or secondary winding) Y.
Compared with the traditional RXQ type harmonic elimination device, the LXQ type harmonic elimination device has been greatly improved in design from the improvement of the heat capacity of the harmonic elimination device.
The harmonic elimination device adopts superior electrical performance, ultra-fine particle SiC as the base material, and is made of a high-density green body by a large-tonnage hydraulic machine, and is sintered at a high temperature of thousands of degrees in a reducing atmosphere. The exposed surface structure of the resistor is specially treated and has a rain-proof function (one of the main indicators of the SiC harmonic elimination device is that the cold water can not be exploded after the action), and can be directly used outdoors.
The new LXQ (LXQ3, LXQ4) type harmonic elimination device is popular among users because of its small size, light weight, high strength, fast heat dissipation, and the removal of the porcelain shell of the traditional RXQ type harmonic elimination device.
Features:
Harmonic or dampen the ferromagnetic resonance caused by the voltage transformer to avoid breakdown and discharge of the internal and external insulation of the voltage transformer;
Limit the overcurrent of the system flowing through the transformer winding during single-phase grounding or arcing grounding to avoid burning of the voltage transformer; small size, light weight, easy to install, convenient and flexible.
Conditions of Use:
Ambient temperature: -40 ° C ~ +40 ° C
Power frequency: 48Hz-62Hz; earthquake intensity of 8 degrees or less;
Although the harmonic elimination device has a rainproof function, it should not be directly exposed to the sun and rain for a long time.
Electrical performance:
Voltage level
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DC characteristics (KV/Ma)
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Nonlinear coefficient (a)
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AC 0.3 voltage V (peak√2)
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AC 3mA voltage V (peak√2)
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Heat capacity 250mA/10min
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6、10kV
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1.45~1.65/15
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0.40~0.45
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130±50
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500±100
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pass
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35kV
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4.0~4.2/42
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0.40~0.45
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450±50
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1400±150
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pass
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6、10kV Secondary side
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1.6~1.7/15
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0.40~0.45
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110±50
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400±100
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pass
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6、10kV Ultra small
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1.6~1.7/15
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0.40~0.45
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120±50
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450±100
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pass
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Harmonic eliminator use selection:
The selection of the harmonic elimination device is listed in the following table. If the voltage transformer (pressure change) model of the user is not found in the table, the model with similar insulation structure in the comparison table can be used for reference.
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Suitable for LXQ-、LXQ3、LXQ4-type transformer models
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Suitable for LXQ-(D)、LXQ3-(D)、Weak insulation type transformer models
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JDZJ-6,10
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JSJW-6,10
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JDEJ-6,10
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JDZX6-6,10
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JDZX8-6,10,35G
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JDZX9-6,10,35
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JDEW-6,10
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JDJW-6,10G
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JDZB-6,10
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JDZX10-6,10
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JDZX11-6,10,35
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JDZXR1-6,10
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JDZX7-6,10
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JDJJ-35
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JDJJ1-35
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JDZXR2-6,10
|
|
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JDJJ2-35
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JDX6-35
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JDX7-35
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UNE10,35
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REL10
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URE10,35
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JDZX-35
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JDXW-35
|
|
URED10
|
UNEW35
|
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