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Transmission Line Surge Arresters upto 400kV FullScreen
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Transmission Line Surge Arrester (NGLA) upto 400kV, Power supply utilities have verified load losses due to voltage snags on their systems from transitory outages caused by lightning activity and causing permanent damages. The effect of these transitory disturbances on transmission lines are more critical in areas with high ground resistivity when associated with high lightning activity. Most non-scheduled outages are transitory in nature, with a fault time shorter than 1 minute, yet deemed to be unacceptable by power supply utilities. The loss of supply is critical for all modern industries reliant on sophisticated electronic equipment and production processes sensitive to momentary disturbances to the system. Raychem RPG’s Transmission Line Surge Arresters (TLA) provides reliability to the power system by reducing non-schedule outages caused by lightening.

  • Make in India
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  • Arrester is built with short circuit fail safe characteristics
  • Transmission line disconnector offered along with arrester
  • Recommend suitable number of arresters and their positioning to minimize outages
  • TLA suspended from transmission line gives enhanced performance 
  • TLA installed on towers subject to clearance
  • more...

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Technical Information

 Type

 

MVSA   

HVSA  

  

Application

    

TL-PCA

TL-PAA

TL-PCA

TL-PAA  

Rated voltage Ur

kV  

6-42 

6-42 

66-400

66-400 

Line discharge class as per IEC60099-4 

  

Arrester class designation 

  

SM 

SL  

SM 

SL 

Rated discharge current 8/20 µs 

kA 

10 

10 

10 

10 

Safe short term load(SSL) 4/10µs

kA  

100 

100 

100 

100 

Energy (according to IEC 99-4, 8.5) Line discharge

kJ / kV Ur 

7.8 

4.5 

7.8 

4.5 

Repetitive Charge transfer rating (Qrs) 

C  

2.2 

1.2 

2.2 

1.2 

 TOV (kV) 

  

  

  

1s

  

1.15x Ur 

1.08x Ur 

1.15x Ur 

1.08x Ur 

10s 

  

1.09 xUr 

1.04x Ur 

1.09 x Ur 

1.04x Ur 

High current short circuit (Pre failing method) 

kA 

63 

40 

63 

40 

 

Certifications

CPRI
CPRI

More info available on request

CESI
CESI

More info available on request

ERDA
ERDA

More info available on request

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