1. CURRENT TRANSFORMERS Support type Support window type Generator / Wall-bushing type Touch-proof type Wall-bushing with primary bar type

Transcription

1 1. CURRENT TRANSFORMERS Support type Support window type Generator / Wall-bushing type Touch-proof type Wall-bushing with primary bar type 4

2 1. CURRENT TRANSFORMERS INTRODUCTION Current transformers reduce the current in the Medium Voltage line to proportional and manageable values, and separate the measuring instruments, meters, relays, etc. from the power circuit. Support type Support window type SECTION 1. Primary terminals 2. Insulation (resin). Primary winding 4. Core and secondary winding 5. Secondary terminal box 6. Base 7. Earth terminal Generator / Wall-bushing type 1 2 Touch-proof type Wall-bushing with primary bar type ACF 6 5

3 ACM-12 Support type transformer for primary distribution swichgears. ABG-24 Current transformer for generator designed to work with very high primary currents. ABD-6 Wall- bushing type transformer with shortcircuitable secondaries. 6

4 1. CURRENT TRANSFORMERS > Support type SUPPORT TYPE Current transformers for indoor service, encapsulated in resin which in addition to their primary function also act as busbar supports. RANGE Insulation voltage from.6 kv to 72.5 kv. Rated primary currents from 1 A to 000 A. Secondary currents: 1 and 5 A. Frequencies: 50 Hz, 60 Hz. ACF APPLICATIONS Medium voltage air insulated primary distribution switchgears. Medium voltage air insulated secondary distribution switchgears. Capacitor Banks. ACD ADVANTAGES Possibility of secondary currents different from the standardized ones (1 and 5 A). Possibility of frequencies different from the standardized ones (50 and 60 Hz). Secondary terminals on the or side. Designed to withstand vibrations. Excellent response under extreme weather conditions. Short-circuit system for secondary terminals and dimensions as per with DIN available. Ratio change by primary or secondary tapping. Stainless steel screws, bolts and nuts available. It can be assembled in any position (vertical, horizontal, etc.). Designs approved by Underwriters Laboratories (UL-USA) available. ACH ACK ACJ 7

5 1. CURRENT TRANSFORMERS > Support type MARKING RATIO AND ONE SECONDARY > DOUBLE PRIMARY RATIO BY SECONDARY TAPPING AND ONE SECONDARY RATIO AND TWO > DOUBLE PRIMARY RATIO AND ONE SECONDARY C1 C2 S1 S2 S1 S2 S 1S1 1S2 2S1 2S2 S1 S2 RATIO AND THREE RATIO AND TWO WITH TAPS > DOUBLE PRIMARY RATIO AND TWO C1 C2 1S1 1S2 2S1 2S2 S1 S2 1S1 1S2 1S 2S1 2S2 2S 1S1 1S2 2S1 2S2 Electrical characteristics Highest voltage Rated insulation level Power frequency Lightning impulse (BIL) (kvp) primary current (A) Short-circuit current I th Short-circuit current I th S.R. D.R. S.R. D.R. Idin (A) number of cores ACD-7 7, x xI th 2 ACD x xI th 2 ACF x xI th ACI x xI th ACIL x xI th ACM x xI th ACD x xI th 2 CID xI th 1 ACF x xI th ACFR x xI th ACH x xI th ACI x xI th ACIL x xI th ACD x xI th 2 ACF x xI th ACH x xI th ACJ x xI th ACJL x xI th ACM x xI th ACA x xI th 1 ACF x xI th ACH x xI th ACM x xI th ACK x xI th ACK x xI th ACP x xI th Triple primary ratio available. Please consult for details. Subject to technical change. 8

6 1. CURRENT TRANSFORMERS > Support type DIMENSIONS A A2 C C2 A1 C1 B1 B2 Dimensions and weights (A1) Dimensions (mm) Base (mm) Mounting (mm) (A2) (A) (B1) (B2) (C1) (C2) Hole diameter (C) Weight (kg) ACD ACD ACF / / ACI ACIL ACM ACD CID / ACF / / ACFR ACH / ACI ACIL ACD ACF / / ACH ACJ ACJL ACM ACA ACF / / ACH ACM ACK / ACK ACP Brass primary terminals (silver-plated on request) with M12 zinc-plated, bichromated steel screw. Brass M5/M6 secondary terminals. Zinc-plated, bichromated steel M8/M12 earth terminals. Polycarbonate secondary terminal cover. Zinc-plated, bichromated steel covers available on request. Approximate dimensions and weights. 9

7 1. CURRENT TRANSFORMERS > Support window type SUPPORT WINDOW TYPE Current transformers for indoor service, encapsulated in resin. Toroidal support type without primary conductor to be installed in medium voltage busbars without insulation. RANGE Insulation voltage from.6 kv to 24 kv. Rated primary currents up to 4000 A. Secondary currents: 1 and 5 A Frequencies: 50 Hz, 60 Hz. APPLICATIONS AGNE Medium voltage air insulated primary distribution switchgears. Capacitor Banks. ADVANTAGES Possibility of secondary currents different from the standardized ones (1 and 5 A). Rated primary currents over 4000 A available. Secondary terminals on the or side. Designs for outdoor service available. Stainless steel screws, bolts and nuts available. AGN AGPE AGD AGN-24 Transformer for generator switchgear. AGNL 10

8 1. CURRENT TRANSFORMERS > Support window type MARKING RATIO AND ONE SECONDARY > DOUBLE PRIMARY RATIO BY SECONDARY TAPPING AND ONE SECONDARY RATIO AND TWO RATIO AND THREE RATIO AND TWO WITH TAPS S1 S2 S1 S2 S 1S1 1S2 2S1 2S2 1S1 1S2 2S1 2S2 S1 S2 1S1 1S2 1S 2S1 2S2 2S Electrical characteristics Highest voltage Rated insulation level Power frequency Lightning impulse (BIL) (kvp) primary current (A) Short-circuit current I th I th (ka/1s) I din (ka) number of cores AGNE xI th AGPE AGPE xI th AGN xI th AGNL xI th 4 AGD xI th 1 AGN xI th Subject to technical change. DIMENSIONS A2 A C C1 A4 A1 C2 B2 B1 Dimensions and weights Dimensions (mm) Base (mm) Mounting (mm) (A1) (A2) (A) Inner diameter (A4) (B1) (B2) (C1) (C2) Hole diameter (C) Weight (kg) AGNE / / AGPE AGPE AGN / / AGNL / AGD M8 11 AGN / / Option to supply with silver-plated copper primary bar on request. Brass M5/M6 secondary terminals. Zinc-plated, bichromated steel M8/M12 earth terminals. Polycarbonate secondary terminal cover. Zinc-plated, bichromated steel covers available on request. Approximate dimensions and weights. 11

9 1. VOLTAGE TRANSFORMERS > Generator / Wall-bushing type GENERATOR TYPE Current transformers for indoor service, encapsulated in resin. Toroidal type without primary conductor to be installed in generator outputs. RANGE Insulation voltage up to 24 kv. Rated primary currents up to 12,000 A. Higher currents available. Secondary currents: 1 and 5 A. Frequencies: 50 Hz, 60 Hz. ABG APPLICATIONS Power generation. ADVANTAGES Measurement and protection applications. Excellent performance in ambient temperatures up to 80 C. Stainless steel screws, bolts and nuts available. ABF WALL-BUSHING TYPE Current transformers for indoor service, encapsulated in resin. Toroidal model without primary conductor for installation as a wall bushing. RANGE Insulation voltage up to 6 kv. Rated primary currents up to 8,000 A. Secondary currents: 1 and 5 A. Frequencies: 50 Hz, 60 Hz. ABE APPLICATIONS Medium voltage air insulated primary distribution switchgears. Power generation. ADVANTAGES Several inner window diameters. Stainless steel screws, bolts and nuts available. ABD 12

10 1S1 1S2 2S1 2S2 S1 S2 1. VOLTAGE TRANSFORMERS > Generator / Wall-bushing type MARKING RATIO AND ONE SECONDARY DOUBLE PRIMARY RATIO BY SECONDARY TAPPING AND ONE SECONDARY RATIO AND TWO RATIO AND THREE RATIO AND TWO WITH TAPS S1 S2 S1 S2 S 1S1 1S2 2S1 2S2 1S1 1S2 2S1 2S2 S1 S2 1S1 1S2 1S 2S1 2S2 2S Electrical characteristics Highest voltage Rated insulation level Power frequency Lightning impulse (BIL) (kvp) primary current (A) Short-circuit current I th I th (ka/1s) I din (ka) number of cores ABD xI th ABD xI th ABD xI th ABD xI th ABD xI th ABE xI th 4 ABE xI th 4 ABF xI th ABG xI th Subject to technical change. DIMENSIONS B1 A C2 A2 B2 A1 C Dimensions and weights Dimensions (mm) Base (mm) Mounting (mm) (A1) (A2) (A) Inner diameter (A4) (B1) (B2) (C1) (C2) Hole diameter (C) Weight (kg) ABD / ABD / ABD / ABD ABD ABE ABE ABF / M16 55 ABG / M16 55 Brass M5/M6 secondary terminals. Zinc-plated, bichromated steel M8/M12 earth terminals. Polycarbonate secondary terminal cover. Zinc-plated, bichromated steel covers available on request. Approximate dimensions and weights. 1

11 1. VOLTAGE TRANSFORMERS > Touch-proof type TOUCH-PROOF TYPE Resin-cast transformers with metallic coating for installation in medium voltage switchgears insulated in gas. RANGE Insulation voltage up to 52 kv. Rated primary currents up to 2000 A. Secondary currents: 1 and 5 A.. Frequencies: 50 Hz, 60 Hz. APPLICATIONS Medium voltage primary distribution gas insulated switchgears (GIS). ARTECHE instrument transformers are installed in over 150 countries. ADVANTAGES Possibility of secondary currents different from the standardized ones (1 and 5 A). Possibility of frequencies different from the standardized ones (50 and 60 Hz). Stainless steel screws, bolts and nuts available. 1. VOLTAGE TRANSFORMERS > Wall bushing with primary bar type WALL BUSHING WITH PRIMARY BAR TYPE Current transformers for indoor service, encapsulated in resin. Toroidal type with primary conductor to be installed as wall bushings. RANGE Insulation voltage up to 72.5 kv. Higher voltages also available. Rated primary currents up to 000 A. Secondary currents: 1 and 5 A.. Frequencies: 50 Hz, 60 Hz. APPLICATIONS Distribution substations. APL ADVANTAGES Wall bushings for indoor-indoor or indooroutdoor installations. Stainless steel screws, bolts and nuts available. 14

12 1. VOLTAGE TRANSFORMERS > Touch-proof type MARKING RATIO AND ONE SECONDARY DOUBLE PRIMARY RATIO BY SECONDARY TAPPING AND ONE SECONDARY RATIO AND TWO RATIO AND THREE RATIO AND TWO WITH TAPS S1 S2 S1 S2 S 1S1 1S2 2S1 2S2 1S1 1S2 2S1 2S2 S1 S2 1S1 1S2 1S 2S1 2S2 2S Electrical characteristics Highest voltage Rated insulation level Power frequency Lightning impulse (BIL) (kvp) primary current (A) Short-circuit current I th I th (ka/1s) I din (ka) number of cores APL xI th APL xI th APL xI th Subject to technical change. DIMENSIONS B1 C1 A A1, A2 B2 C2 C Dimensions and weights Dimensions (mm) Base (mm) Mounting (mm) (A1) (A2) (A) Inner diameter (A4) (B1) (B2) (C1) (C2) Hole diameter (C) Weight (kg) APL / / / APL APL Brass M5/M6 secondary terminals. Zinc-plated, bichromated steel M8/M12 earth terminals. Polycarbonate secondary terminal cover. Zinc-plated, bichromated steel covers available on request. Approximate dimensions and weights. Indoor/outdoor wall-bushing in a distribution substation. 15