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LXQ(2、3) - Primary Harmonic Eliminator Series
Overview
LXQ (2, 3) type 6- 35kV voltage mutual inductance Device neutral point with nonlinear resistance harmonic elimination damping Device (referred to as harmonic elimination device), is installdl in 6-35kV voltage mutual inductance以下(hereinatfter referred to as pressure change or PT) primary winding Y. A nonlinear resistance harmonic elimination damping device between the neutral point of the junction and the ground. The product model of the harmonic elimination device - LXQ represents a rectangular harmonic elimination device designed according to the traditional shape; LXQ3 represents a harmonic elimination device with a solid-column shape that is designed with three modified designs and exposed on the outside of the resistor without the need of an insulating jacket. The two are just different in appearance and have the same electrical properties.
The DC electrical characteristics of the LXQ (2, 3) type 6-35kV harmonic elimination device are similar to those of the traditional RXQ and LXQ type harmonic elimination devices, but the structural design has been greatly improved from the improvement of the heat capacity of the harmonic elimination device. The harmonic elimination device adopts excellent electrical properties and ultra-fine particles according to siC as a substrate; it is pressed intoa high-density, round cake- shaped blank by a large- tonnage press; under a reducing atmosphere.
After being sintered at a high temperature of thousands of degrees, the surface structure of the exposed resistor is specially treated to withstand the sun and rain, and can be directly used indoors and outdoors. It is small in size, light in weight, fast in heat dissipation, high in strength and easy to install. Very popular with users.
Main electrical performance
LXQ (2) type harmonic elimination is 6kV and 10kV as general-purpose models, performance parameters (Table 1)
Project | LXQ(2)-10K/(6)kV | LXQ(2)-35Kv | |
Via AC 0.3mA Peak√ 2 current | voltage ()peak12 | 130+30 | 450+100 |
Resistance(Ko) | >450 | >1800 | |
Passing AC 0.3mA peak √2 current | voltage() peak/ 2 | 500+100 | 1400+150 |
Resistance (KΩ) | >180 | >550 | |
Power frequency voltage change at both ends of the D-type resistor | Limited to 3kV (peak √ 2) | Limited to 5kV (peak √ 2) | |
2 hours tolerated power (w) | 1.No obvious damage; 2.Changes in U 0.3mAp and U3mAp before and after the heat capacity test,<+10 | ||
Passing 500mA(ms) capacity for 10min | 2.Changes in U0.3mAp and u3mAp before and after the heat capacity test,<+10 | ||
Main electrical performance
Main performance parameters of LXQ(3) type 6 -35kv harmonic elimination device (Table 2)
Project | LXQ(3)-6 LXQ(3)-6D | LXQ(3)-10 LXQ(3)-10D | LXQ(3-35 LXQ(3)-35D | |
via AC 0.3mA Peak √ 2 current | Voltage(V)peak/ 2 | 170-210 | 280+350 | 840+1050 |
Resistance (KΩ) voltage (V)peak/2 | >170 | >280 | >840 | |
Passing AC0.3mA peak √2 currentl | 480-600 | 800-100 | 2100-2625 | |
Resistance (KΩ) | >48 | >80 | >210 | |
Power frequency voltage change atboth ends of the D-type resistor | Limited to 3kV (peak√2) | Limited to 5kV (peak √2) | ||
2 hours tolerated power (w) | >800 | >800 | >800 | |
Passing 500mA (rms) capacity for 10min | 1.No obvious damage; 2.Changes in U0.3mAp and U3mAp before and after the heat capacity test,<+10 | |||
Harmonic Eliminator Model Selection
Suitable for pressure change models with LxQ3 type- fully insulated | Suitable for pressure change models with LXQ3(D)type -semi-insulated | ||
JDZJ-6，10 | JDJJ-35 | JDZX6-6，10 | UNE10，35 |
JSJW-6，10 | JDJJ1-35 | JDZX8-6，10，35G | UNE10 |
JDEJ-6，1 | JKJJ2-35 | JDZx9-6，10，35G | UNE10，35 |
JDEW-6，10 | JDX6-35 | JDZX1D-6，10 | UNE10 |
JDJW-6，10G | JDX7-35 | JDZX11-6，10，35 | UNE35 |
JDZB-6，10 | JDZX-35 | JDZXR1-6，10 | |
JDZX7-6，10 | JDXW-35 | JDZXR2-6，10 | |
LXQ (3) type 6~35kV harmonic elimination device use environment
1. Outdoors, installed on the near side of the pressure change,although the harmonic elimination device has a rainproof
function, it is not suitable to drectly withstand the sun and rain;
2. Ambient temperature -40℃;
3. AC power system frequency is 50Hz or 60Hz:
4. The earthquake intensity is below 8 degrees.
2、wiring diagram (see Figure 1)
Before the harmonic elimination device is connected, the three- phase five- column pressure-change neutral point *0” is directly grounded and connected to the harmonic elimination device.
The neutral point (O) must be disconnected from the ground, and the harmonic elimination device should be connected between the neutral point (0) and the ground (the neutral point is no longer directly grounded).
(2) When three -phase five-column compression (PT):
Before the harmonic elimination device is connected, the three- phase fve-column pressure-variable neutral point *0” is drecty grounded. When the harmonic elimination device is connected, the neutral point (0) must be disconnected from the ground, and the harmonic elimination device is connected to the neutral point ( 0) Between ground and ground (the neutral point is no longer directly grounded).
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