Introduction
LXQIII and CNSQ(D) II - type 6 - 35KV arc - suppressing resistors for the neutral point of voltage transformers (abbreviated as arc suppressors) are non - linear damping resistors installed between the neutral point of the primary winding of a Y0 - connected voltage transformer and the ground. They play the roles of damping and current - limiting.
The resistors of LXQ - type arc suppressors use SiC as the base material, and the connectors are made of die - cast aluminum. The overall appearance is beautiful, with small volume, light weight, high strength, easy heat dissipation, and convenient installation.
The accessory "third - harmonic voltage limiter" installed at the two ends of the open delta of the residual voltage winding of the voltage transformer can limit the voltage drop on the arc suppressor caused by the third - harmonic current and fundamental - wave unbalanced current of the voltage transformer to a degree satisfactory to users.
Having been in operation in the power grid for many years, experience shows that this arc suppressor has the excellent functions of eliminating the ferromagnetic resonance of voltage transformers and preventing the fusing of single - phase high - voltage fuses. It also has the advantages of being adaptable to the weak insulation matching at the neutral point of voltage transformers and being small and convenient for installation.
Technical Parameters
| Number |
Project |
LXQ-III-6 LXQ(D)III-6 |
LXIII-10 LXQ(D)III-10 |
LX0III-35 LXQ(D)III-35 |
| 1 |
When the alternating current is 0.3mA |
voltage(V) |
120-280 |
120-280 |
630-770 |
| resistance(KΩ) |
>48 |
>80 |
>210 |
| 2 |
When the alternating current is 3mA |
voltage(V) |
450-840 |
450-840 |
1960-2240 |
| resistance(KΩ) |
>170 |
>280 |
>840 |
| 3 |
Both ends of the resistor of type (D) |
At 3kV, the resistance value decreases by more than half |
At 3kV, the resistance value decreases by more than half |
At 5kV, the resistance value decreases by more than half |
| Power frequency voltage variation |
| 4 |
Power (W) withstandable for 2 hours |
>800 |
>800 |
>800 |
| 5 |
The thermal capacity when a current of 500mA (effective value) passes through for 10 minutes |
No obvious damage. Before and after the thermal capacity test, in the cold state, the variation of electrical parameters is no more than ±10%. |
| Voltage transformer models suitable for matching with CNSQ(D) I - type |
| JDZJ-6,10 |
JDJJ-35 |
JDZX6-6,10 |
UNE10,35 |
| JSW-6,10 |
JDJJ1-35 |
JDZX8-6,10,35G |
5G REL10 |
| JDEJ-6,10 |
JDJJ2-35 |
JDZX9-6,10,35 |
35 URE10,35 |
| JDEW-6,10 |
JDX6-35 |
JDZX10-6,10 |
URED10 |
| JDJW-6,10G |
JDX7-35 |
JDZX11-6,10,35 |
35 UNEW35 |
| JDZB-6,10 |
JDX-35 |
JDZXR1-6,10 |
|
| JDZX7-6,10 |
JDXW-35 |
JDZXR2-6,10 |
|
Model Selection
LXQ - 6kV, LXQ - 10kV, LXQ - 35kV neutral - point arc - suppressing resistors
LXQII - 6kV, LXQII - 10kV, LXQII - 24, LXQII - 35kV, LXQ2 - 6, LXQ2 - 10, LXQ2 - 24, LXQ2 - 35, LXQ - 6, LXQ - 10, LXQ - 24, LXQ - 35
Voltage - transformer neutral - point arc - suppressing resistors
LXQII(D) - 6kV, LXQII(D) - 10kV, LXQII(D) - 35kV, LXQ2(D) - 6, LXQ2(D) - 10, LXQ2(D) - 35, LXQ - 6D, LXQ - 10D, LXQ35D, LXQ(D) - 6, LXQ(D) - 10, LXQ(D)35
Weak - insulation type high - voltage arc suppressors
LXQIII - 6kV, LXQIII - 10kV, LXQ3 - 35kV voltage - transformer neutral - point arc - suppressing resistors
LXQIII(D) - 6kV, LXQIII(D) - 10kV, LXQIII(D) - 35kV weak - insulation type high - voltage arc suppressors
LXQ2 - 6kV, LXQ2 - 10kV, LXQ2 - 35kV high - voltage arc suppressors for the neutral point of voltage transformers
LXQ2(D) - 6kV, LXQ2(D) - 10kV, LXQ2(D) - 35kV weak - insulation type high - voltage arc suppressors
LXQ3 - 6kV, LXQ3 - 10kV, LXQ3 - 35kV high - voltage arc suppressors for the neutral point of voltage transformers
LXQ3(D) - 6kV, LXQ3(D) - 10kV, LXQ3(D) - 35kV, LXQ3D - 6A, LXQ3D - 10A, LXQ3D - 35A weak - insulation type high - voltage arc suppressors
LXQ(3) type 6 - 10kV universal arc suppressors for the neutral point of voltage transformers
Technical Parameters
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