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RXQ-35,RXQ-20 a harmonic device is installed in the 20~35kVPT of
primary windings Y0 wiring between neutral and ground high capacity
non-linear components, damping and current-limiting function. That
fully conform to the current standard of electric power harmonic
devices DL/T620-1997 overvoltage protection and insulation
coordination for AC electrical device 4th. provisions contained in
section 1.5, you can play a good effect of limiting voltage
6~35kV of electromagnetic voltage transformer in neutral point
Earth free power system (hereinafter referred to as PT) there are
two related issues need to be addressed: a. PT ferroresonance
overvoltage insulation outside equipment breakdown, discharge and
often less time or accident caused by the expansion of a large area
blackout; b. arc PT frequently burnt in the grid.
Using RXQ-35,RXQ-20 once Xiao harmonic device can effective to
solution above problem: 1, and elimination or damping PT nonlinear
Lai magnetic characteristics and caused of iron magnetic resonant
had voltage, this resonant had voltage will led to system phase
voltage not stability; 2, and can effective to inhibition gap
sexual arc grounding Shi flows through PT winding of had current,
prevent PT of burned; 3, and limit system single phase to
disappeared Shi in PT once winding circuit in the produced of
inrush current, this inrush current will damaged PT or make PT melt
silk fuse; 4, and Occurs when the system single-phase Earth
protection long after PT from damage.
When the bus unloaded or outlet of electromagnetic voltage
transformer is small, charge or at run time by closing ground fault
elimination of causes of firing, PT oversaturated, ferromagnetic
resonance overvoltage may occur. Appears relatively unstable
voltage, grounding instructions malfunction, PT high-voltage fuse
and other anomalies, severe cases can result in PT burn, which led
to the emergency.
RXQ-35,RXQ-20 the main characteristics of a harmonic device: 1. A
harmonic device used in all RXQ-35,RXQ-20 made of special alloy,
single chip Chase flow nonlinear components, eliminating harmonic
of the original parallel structure with multiple pieces of
equipment in the uneven flow phenomenon, the performance is more
2.PT high-voltage fuse is generally 0.5A, which when burned may
cause the PT in neutral non-earthing and other accidents. Due to
the use of better materials and production process, RXQ-35,RXQ-20 a
harmonic series harmonic device flow capacity of up to 500mA. 3.
RXQ-35,RXQ-20 a harmonic series resonance device provided for
semi-insulating PT special semi-insulating harmonic devices (type
b), can effectively limit voltage resonance device, thereby
protecting insulated neutral point.
4. size ultra small RXQ-35,RXQ-20 a harmonic device, particularly
suitable for PT handcart Cabinet and cabinet installation. Harmonic
devices using metallic materials as a whole is directly connected,
without bushing, no risk of exploding. 5. for greater harmonic
voltage appears partly open-Delta voltage transformer, a harmonic
RXQ-35,RXQ-20 harmonic device device can inhibit PT open triangles
at each end of the harmonic voltage
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