Porcelain disc suspension insulator is designed to be assembled
together to be insulator strings (also called strain
insulators),which can divide into Ball & Socket Type and
Clevis & Tongue Type.This structure enables them form the
insulator string by fitting into themselves one another as per
voltage requirement.ANSI Class/StandardANSI 52-3Unit Spacing (H)
- mm146mmNominal Diameter (D) -mm254mmCreepage
Distance292mmPower frequency puncture voltage110kVPower frequency
flashover voltage Dry80kV Wet50kVCritical impulse
flashover voltage Positive125kV Negative130kVRadio
influence voltage Test voltage to ground10kV Max. RIV at
1000kHz50kVRated E & M failing load70kNTension proof
load35kNImpact strength6N.mWeight4.6kgType and usages of porcelain
bushing insulators1. ordinary porcelain bushing insulators: used in
general transformer or reactor, can be used in the low voltage and
medium voltage.2. high-voltage porcelain bushing insulators:
used with high-voltage systems connected to the transformer, and
can withstand higher pressures.3. organosilicone porcelain
bushing insulators: composed of organosilicone resin and ceramic
material, has the advantages of small dielectric constant, low
dielectric loss, etc. It is mainly used for supporting the
insulation support of high-voltage windings.Porcelain casing as the
core component of the transformer, bear the insulation support and
heat dissipation of the dual role, can effectively protect the
normal use of the transformer./* January 22, 2024 19:08:37
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