Sheath Voltage Limiters - Destin AB

1 HC Sheath Voltage LimitersWith 50 years of experience in surgeprotection, AREVA provides productssuitable to the user s Sheath Voltage Limiters are surgearresters required for the reliability ofelectrical sections built with under-ground overvoltage protection provided bya surge arrester ensures both personneland equipment safety, thus optimizingoperating RIGHT SURGE ARRESTER AT THERIGHT PLACE!Our HC surge arresters are designed for overvoltage protection of Power Distribution or Power Transmission underground composite technology provides both high electrical perfor-mance and optimized conditions for ranges of products are available : VARISILTMHC surgearresters for connection to single point bonded sections and RNLHC surge arresters for use inside cross-bonding features of HC Sheath Voltage Limiters are in accordance with CIGRE recommendations and IEC 60099-4 benefits.

2 System reliabilityEasy to installEnhanced and fittingsReferenceL1 ( mm)L2 ( 2 mm) b0b1b2b3d x L (mm) b0b1b2b3L3 ( mm) b0b1b2b3H (mm)b0/b2/b3b1P (mm)b0b1/b2/b3e (mm)b0/b1/b2b3 Approximate weight (kg)HC 239, optionsb0 : medium bracketsb1 : short bracketsb2 : long bracketsb3 : asymmetrical brackets1 - End stud2 - Locking nut3 - Synthetic housing4 - Contact disk5 - Metal oxide varistor14 x 1813 x 2610 x 2518 x 385980484023 RNL HCb0 / b1/ b2b3d x Ld x LL3L2L1L3L2L1 HPe 48 Local earthLocal earthLocal earthLocal earthLocal earthCabinets with3 RNL HC CablesConductorSheathElectrical featuresReferenceRated Voltage Ur (kV rms)Continuous operating Voltage Uc(kV rms)Nominal discharge current In (kA 8/20)High current impulse withstand(kA 4/10)Long duration current withstand(A 2000 s)Maximum residual voltageat 10 kA 8/20 = protective level (kV peak)

3 HC 33, optionP2 optionElectrical featuresReferenceRated Voltage Ur (kV rms)Continuous operating Voltage Uc (kV rms)Nominal discharge current In (kA 8/20) High current impulse withstand (kA 4/10)Long duration currentimpulse withstand (A 2000 s)Short circuit withstand(kA s)Maximum residual Voltage at 10 kA 8/20= protective level (kV peak)Nominal creepage distance (mm)HC - Stainless steel top stud2 - Securing nut3 - Stainless steel top cap4 - Aluminium electrode5 - Metal oxide varistor6 - Synthetic tape7 - Composite wrapping8 - Silicone rubber housing9 - Stainless steel bottom cap10 - Stainless steel bottom studDimensions and fittingsReferenceH0 (mm)H1 (mm)H2 (mm)Weight no version (kg)HC optionsNO : basic versionP2 : with square pedestal (+ kg)IP2 : with insulated square pedestal (+ kg)Note.

4 Connection via terminal lugs or connecting clamp if conductor diameter <18 earthLocal earthLocal earthLocal earthVARISILTMHCVARISILTMHC VARISILTMHCI nsulated grounding conductorM 12 Connectingclamp 87H1H0H1H0H1H0H2 87 87M 12M 12 ConnectingclampConnectingclampInsuledped estalUse of 4fixing HM8boltsPedestal110140110140110140123456 78910140110 Our policy is one of continuous development. Accordingly the design of our products may change at any time. Whilst every effort is made to produce up to date literature, this brochure shouldonly be regarded as a guide and is intended for information purposes only.

5 Its contents do not constitute an offer for sale or advise on the application of any product referred to in it. We cannot be held responsible for any reliance on any decisions taken on its contents without specific - GB - 12/2009. TRIDELTA, the AREVA logo and any alternative version there of are trademarks and service marks of TRIDELTA. All trade names or tradmarks mentioned herein whether registred or not, are the property of their The choice of the range must be made according to the application : - RNL HC range for mounting in cabinets with crossbonding, - VARISILTM HCfor mounting at ends of single point bonded selection of the appropriate reference within the range is based on two considerations having opposite impacts.

6 - the lightning impulse withstand level of the Sheath , whichdepends on the external insulation of the cable, tends to minimize the required protective level,- the Voltage induced at the connecting point of the device in case of short circuit on the main conductor, which depends onthe short circuit power and on the length of the cable to be protected, leads to maximize the rated protective margin greater than 20 % is recommended between the protective level of the surge arrester (Up) and the lightning impulse withstand level of the Sheath (Uw).On the other hand, the level/time values (Usc/T) of the voltageinduced on the Sheath in case of short circuit must be below theminimum Voltage vs time characteristic curve of the surge several references meet both requirements, the final choice will be made by the user with respect to operation requirements and priorities.

7 Basically, the surge arrester with lower rated Voltage will provide improved protection whereas the surge arrester withhigher rated Voltage will better withstand short circuit surge arrester in-between will be a no reference fulfil both requirements, the protectionshould be achieved at shorter intervals so as to allow the use of asurge arrester having a lower rated Cable features :- single point bonded cable- Uw = 55 kV- usc = 300 V/kA/km- Isc = kA / 1 s- L = kmSheath Voltage limiter selection :a) VARISILTMHCb) 20% protective margin :Up < so that Up < 46 kVc) Voltage withstand under short circuit conditions :Usc = usc x Icc x L = 17 kVand U (T = 1 s) = x Ur according to the above curve give x Ur > 17 so that Ur > , the calculations lead to VARISILTMHC 15 Hz applied Voltage ( of Ur)Permissible duration (s)TRIDELTA Parafoudres Boulevard de l'Adour - 65202 BAGNERES DE BIGORRE - FRANCE Tel : + 33 (0)5 62 95 84 50