【正文】 62 SebaKMT – Product range 4. VLF (Very Low Frequency) CR (Cosine Rectangular) Cable Testing systems: ? Most powerful testing approach, in particular for (very) long cables ? Wave form similar to 50 Hz – power frequency: Strong increase during zerocrossing ? Fully automatic, easy to use system ? Test method according to international standards (c) SebaKMT , all rights reserved (c) SebaKMT, all rights reserved Products VLF CR technology – Portable solutions I VLF CR28 (899005936) 181。F 40 kV 181。F 35 kV 3,0 181。F 35 kV 10,0 181。F 18 kV VLF very low frequency CR Cosine Rectangle B Basis P Plus (symmetrical) PZ Pr252。F 18 kV VLF CR80B (890012125) VLF CR80BPZCEN (890012123) 2,0 181。F 36 kV 9,9 181。F (890025800) VLF CR6025181。F: Con Ed version (symmetrical) VLF CR80P (890012124) VLF CR80PPZCEN (890012122) 2,5 181。F 36 kV 14 181。F Hz, 30 kVpeak (20 kVRMS) ? 5,0181。 ? During the whole service life they are subjected to thermal, electrical, mechanical and environmental stresses。 ? To avoid failures in the insulation the measurement of the dielectric losses could be a helpful tool. RCIICR ?? 1tan ??VLF Tan Delta Tan Delta basics U IC IR I δ Dielectric losses are mainly dominated by the conductive losses that occur in the insulation material, in case of papermass cables also the polarizationlosses will influence the dielectric losses. The Dielectric losses (Tan Delta) can be calculated according to : Visually given by: In simple terms, the insulation resistance is inversely proportional with the Tan Delta. (c) SebaKMT 2023, all rights reserved. VLF Tan Delta Tan Delta basics The most important ageing phenomenon for PILC cables is the degradation of cellulose, what basically means that moisture es free from the paper insulation because of thermal and chemical processes. This moisture content will decrease the insulation resistance, resulting in an increase in Tan Delta. It is clear that with PILC cables external water ingress will also influence。 ? Result is a decrease of the breakdownstrength of the insulation。F ?Test capacity 0,01Hz: 5,0181。F ? Test capacity 0,01Hz: 3,5 181。F 60 kV 7,0 181。F 60 kV HP: High Power (6,5 181。F 60 kV 10,3 181。F 60 kV (36 kV) 4,5 181。F 54 kV 8,0 181。F 60 kV 3,0 181。fZusatz (test add on) CEN Centrix OFFS Offshore (grouted HV output line) (c) SebaKMT, all rights reserved Products VLF CR technology – Portable solutions II VLF CR40P (899004501) VLF CR40PPZCEN (890022741) 4,4 181。F 18 kV VLF CR60B (899007186) VLF CR60BOFFS(890025374) 0,8 181。F 18 kV 181。D e f i n a b l e c a b l e s e c t i o n s 5 0 s e c t i o n sPi n p o i n ti n g0 1 0 k V D C p u l s e d a d j u s t a b l e d u t y c y c l e4 , 8 H z f o r u s e w i t h A F ra m e sA d j u s t a b l e c u rre n t l i m i t Y e sI n te g r a te d d i s c h a r g i n g u n i tM a x . c a p a c i t y o f t e s t o b j e c t 1 0 181。C , n o n c o n d e n s in g )D i m e n s i o n s 5 0 0 x 4 5 7 x 3 0 5 m mPro t e c t i o n ra t i n g I P5 4 (w i t h c l o s e d l i d )W e i g h t i n c l . A c c . ~ 2 0 k g Sh e a th te s ti n gR e s i s t a n c e Y e sT ra n s i e n t / i n t e rm i t t e n t f a u l t d e t e c t i o n Y e sBu rn i n g Y e sV o l t a g e a n d c u rre n t l i m i t a t i o n Y e sT e s t p ro t o c o l Y e s , Ea s y Pro t v i a U SBPr e l o c a ti o nM e a s u ri n g t e c h n i q u e v o l t a g e d ro p m e t h o d (i n c l . d i re c t re s i s t a n c e m e a s u re m e n t )A c c u ra c y 177。 L ED illu m in a tio nU s e r i n t e rf a c e Ea s y G o ro t a ry k n o b / p u s h b u t t o n a n d t o u c h s c re e nM a i n s s u p p l y 8 8 … 2 6 4 V A C , 5 0 … 6 0 H z , 8 0 0 V AI n t e g ra t e d b a t t e ry N I M H , c a . 1 5 0 W h , b a t t e ry o p e ra t i o n f o r a l l a p p l i c a t i o n sEx t e rn a l D C s u p p l y 1 2 V . . . 2 4 V D C f o r b a t t e ry c h a rg i n g a n d n o n H V o p e ra t i o nO p e ra t i n g c o n d i t i o n s 2 5 176。C Dimensions (W x H x D) 360 x 160 x 270 mm Supply Internal NiMh battery, 110 / 250 V Weight 6 kg Teleflex T 30E: Technical Data (c) SebaKMT , all rights reserved HV Operation from one single unit only (c) SebaKMT , all rights reserved 32 Fault location up to 400 kV R 30 the Test Van system for any application ? DC Testing up to 110 kV ? Options up to 150 kV and 400 kV Fault location in all known technologies ? ARM and ICE up to 50 kV ? Decay 110 kV ? Optional Decay Method up to 400 kV Fully integrated safety concept Comparably low weight and volume Low power consumption R 30 the most powerful Fault Location System (c) SebaKMT , all rights reserved digiPHONE+ System The digiPHONE+ System consists of: the Receiver the Sensor and the Headset (c) SebaKMT , all rights reserved Careful handling, night work and filtering is history now: Today we have a new definition of silence The innovation in fault pinpointing Several new, innovative methods of the digiPHONE+ will ensure the silence The technology that lets you hear the fault – only the fault! No traffic! No high heels! No talking! No noise! You hear only what you want to hear, ? “THE” Fault! Your ears will like it! digiPHONE+ System (c) SebaKMT , all rights reserved Features / Benefits ? Highest acoustic quality and external noise immunity ? Automatic Volume Mute with ?Bang protection“ ? Bright, sun capable display ? Easiest Operation ? Ergonomical, adjustable telescopic handle ? Distance measurement in Milli seconds