Indoor instrument transformers Current transformers Voltage transformers
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1 Medium Voltage Distribution Indoor instrument transformers Current transformers Voltage transformers Catalogue 2008
2 Selection guide Technical description DE52454 Current transformers (CT) meet standard IEC Their function is to supply the secondary circuit with a that is proportional to that of the MV circuit on which they are installed. The primary is series-mounted on the MV network and subject to the same over-s as the latter and withstands the MV voltage. The secondary generally has one of its terminals connected to earth. The secondary must never be in an open circuit (short circuit). Wound type primary transformer DE52455 Closed core type transformer Current transformers Current transformers have two basic functions: b adapting the MV value at the primary to the characteristics of the metering or protection devices by supplying a secondary with a reduced, but proportional value b isolating power circuits from the metering and/or protection circuit. Composition and types A transformer comprises a primary circuit and a secondary circuit connected via a magnetic core and an insulating coating system in epoxy-silica, in the case of Schneider Electric transformers. The device is of the following type: b wound: when the primary and the secondary have a coil wound on the magnetic circuit b slip-over: primary made up of a conductor that is not insulated from the installation b core: primary made up of an insulated cable. Characteristics These are defi ned in standard IEC Insulation Characterized by the rated voltage: b of the insulation, which is that of the installation (e.g.: 24 kv) b of the power frequency withstand 1 min (e.g.: 50 kv) b of the impulse withstand (e.g.: 125 kv). Rated frequency 50 or 60 Hz. Rated primary (Ipn) Rms value of the maximum continuous primary. Usual values are 25, 50, 75, 100, 200, 400, 600 A. Rated secondary (Isn) This is equal to 1 A or 5 A. Rated transformation Kn = I rated primary / I rated secondary (e.g.: 100 A / 5 A) Ith - 1 second This characterizes the withstand under short circuit conditions for 1 second. It is expressed in ka or in a multiple of the rated primary (e.g.: 80 x Ipn) for 1 second. The value for a dun that is different to 1 second is given by: I th = Ith/2 For example 16 ka - 1 s is equivalent for 2 s to I th = 16 x 2 = 22.6 ka. 5
3 Selection guide Technical description (cont.) Characteristics (cont.) peak value This value is standardized from Ith - 1 s at: b IEC: 2.5 Ith at 50 Hz and 2.6 Ith at 60 Hz b ANSI: 2.7 Ith 60 Hz. Accuracy load The value of the load on which is based the metered accuracy conditions. Accuracy power Pn Apparent power (VA) that the CT can supply on the secondary for the rated secondary for which the accuracy is guaranteed (accuracy load). Usual values VA (IEC). Accuracy class Defi nes the limits of error guaranteed on the transformation and on the phase shift under the specifi ed conditions of power and. Classes 0.5 and 1 are used for metering class P for protection. Current error ε (%) Error that the transformer introduces in the measurement of a when the transformation is different from the rated value. Phase shift or phase error ψ (minute) Difference in phase between the primary and secondary s, in angle minutes. Table of transformer characteristics Characteristics Rated values Rated voltage (kv) Insulation level: b power frequency withstand (kv) 1 min b lightning impulse withstand (kv - peak) Frequency (Hz) Primary Ipn (A) Ith (1 s) ka or x In Secondary Isn (A) 1-5 Accuracy power Pn (VA)
4 Selection guide Using the order forms The tables on the following pages allow you to defi ne the transformer reference that corresponds to the necessary and required characteristics, and to place your order. The selection factors enabling you to fi nd the reference you require are explained in the example given below for a DIN type metering CT, in reference to the previous defi nitions. Network insulation 12 kv Rated primary 75 A and secondary output 5 A MV side 31.5 A - 1 s Power supplied to the secondary 15 VA. Accuracy class 0.5 defi nes the metering error limits. The safety factor is < 10 Mark the quantity to be ordered DE58001 Ur 12 kv Ud 28 kv - 1 min Up 75 kv peak Power, accuracy class, safety factor FS Type Reference Quantity 50 / VA cl. 0.5 Fs < 10 AD N0 16 AD N0 75 / 5 25 AD N AD N0 100 / 5 25 AD N AD N0 200 / 5 25 AD N AD N0 40 AD N0 400 / 5 40 AD N0 600 / VA cl. 0.5 Fs < 10 AD N0 750 / 5 50 AD N0 AD12N1 AD13N / VA cl. 0.5 Fs < 10 AD N0 Dimensions page / 5 50 AD N0 DE58002 Calculating the power (VA) Indicative metering consumptions Device Ammeter Electromagnetic 3 Electronic 1 Transducer Self-powered 3 External powered 1 Meter Induction 2 Electronic 1 Wattmeter, varmeter 1 Indicative protection consumption Device Static over- relay 0.2 to 1 Electromagnetic over- relay 1 to 8 Indicative secondary cabling consumption Cables (mm 2 ) Max. consumption in VA (per circuit) Max. consumption in VA (per circuit) Consumption (VA/m) 1 A 5 A
5 DIN standard 12 kv CT - single and double secondary DE58001 DE58001 DE58001 Ur 12 kv Ud 28 kv - 1 min Up 75 kv peak DE58002 Single secondary metering CT Power, accuracy class, safety factor FS 50 / VA cl. 0.5 Fs < 10 AD12/N N0 16 AD12/N N0 75 / 5 25 AD12/N N AD12/N N0 100 / 5 25 AD12/N N AD12/N N0 200 / 5 25 AD12/N N AD12/N N0 40 AD12/N N0 400 / 5 40 AD12/N N0 600 / VA cl. 0.5 Fs < 10 AD12/N N0 750 / 5 50 AD12/N N0 AD12 AD / VA cl. 0.5 Fs < 10 AD13/N N0 Dimensions page / 5 50 AD13/N N0 Ur 12 kv Ud 28 kv - 1 min Up 75 kv peak DE58002 Single secondary protection CT Power and accuracy class (possible double use) 50 / VA 5P VA 5P20 AD12/N N0 16 AD12/N N VA 5P10 AD12/N N0 75 / VA 5P VA 5P20 AD12/N N VA 5P10 AD12/N N0 40 AD12/N N0 100 / VA 5P VA 5P20 AD12/N N AD12/N N VA 5P10 AD12/N N0 200 / VA 5P VA 5P20 AD12/N N AD12/N N0 40 AD12/N N0 400 / 5 40 AD12/N N0 600 / 5 50 AD12/N N0 750 / 5 50 AD12/N N0 AD12 AD / VA 5P20 AD13/N N0 Dimensions page / 5 50 AD13/N N0 Insulation level and frequency Ur 12 kv Ud 28 kv - 1 min Up 75 kv peak Double secondary metering and protection CT Metering secondary: Metering secondary: power, accuracy power and accuracy class, safety factor class (possible FS double use) 50 / VA cl. 0.5 Fs < VA 5P10 AD12/N N0 16 AD12/N N0 75 / AD12/N N0 25 AD12/N N0 100 / AD12/N N AD12/N N0 200 / VA cl. 0.5 Fs < VA 5P VA AD12/N N0 5P AD12/N N VA cl. 0.5 Fs < VA 5P10 AD12/N N0 400 / VA cl. 0.5 Fs < VA 5P VA AD12/N N0 5P / VA cl. 0.5 Fs < 10 AD12/N N0 AD / AD12/N N0 Dimensions page / VA cl. 0.5 Fs < VA 5P20 AD13/N N / AD13/N N0 12
6 DIN standard 24 kv CT - single secondary DE58003 DE58005 DE58003 DE58005 Ur 24 kv Ud 50 kv - 1 min Up 125 kv peak DE58004 Single secondary metering CT Power, accuracy class, safety factor FS 25 / VA cl. 0.5 Fs < 10 AD22/N N0 20 AD22/N N0 50 / 5 20 AD21/N N0 20 AD22/N N0 20 AD22/N N0 75 / 5 16 AD21/N N0 25 AD21/N N AD21/N N0 40 AD22/N N0 100 / 5 25 AD21/N N AD21/N N0 40 AD22/N N0 200 / 5 25 AD21/N N0 AD21 AD AD21/N N0 40 AD21/N N0 400 / 5 40 AD21/N N0 600 / VA cl. 0.5 Fs < 10 AD21/N N0 750 / 5 50 AD21/N N / VA cl. 0.5 Fs < 10 AD23/N N / 5 50 AD23/N N / 5 50 AD23/N N0 AD / 5 50 AD23/N N0 Dimensions page / 5 50 AD23/N N0 Ur 24 kv Ud 50 kv - 1 min Up 125 kv peak DE58004 Single secondary protection CT Power and accuracy class (possible double use) 25 / VA 5P10 AD22/N N VA 5P VA 5P20 ARJD/N N VA 5P10 AD22/N N VA 5P VA 5P20 ARJD/N N0 50 / VA 5P10 AD21/N N VA 5P VA 5P20 AD22/N N0 20 AD22/N N0 20 ARJD/N N VA 5P10 ARJD/N N0 75 / 5 16 AD21/N N VA 5P VA 5P20 AD22/N N VA 5P10 AD21/N N VA 5P VA 5P20 AD22/N N VA 5P10 AD21/N N VA 5P VA 5P20 AD22/N N VA 5P10 AD22/N N VA 5P VA 5P20 ARJD/N N0 100 / VA 5P10 AD21/N N VA 5P VA 5P20 AD22/N N VA 5P10 AD21/N N VA 5P VA 5P20 AD22/N N0 200 / 5 25 AD21/N N0 AD21 AD AD21/N N VA 5P10 AD21/N N VA 5P VA 5P20 AD22/N N0 400 / 5 40 AD21/N N0 600 / 5 50 AD21/N N0 750 / 5 50 AD21/N N / VA 5P20 AD23/N N / 5 50 AD23/N N / VA 5P20 AD23/N N0 AD23 ARJD 2000 / 5 50 AD23/N N0 Dimensions page / 5 50 AD23/N N0 DE
7 DIN standard 24 kv CT - double secondary DE58003 DE58005 DE58004 Insulation level and frequency Ur 24 kv Ud 50 kv - 1 min Up 125 kv peak Double secondary metering and protection CT Metering secondary: Metering secondary: power, accuracy power and accuracy class, safety factor class (possible double FS use) 25 / VA cl. 0.5 Fs < VA 5P10 AD22/N N0 20 ARJD/N N0 50 / AD21/N N VA 5P VA 5P20 ARJD/N N VA 5P10 AD22/N N VA cl. 0.5 Fs < VA 5P VA 5P20 ARJD/N N VA cl. 0.5 Fs < VA 5P10 ARJD/N N0 75 / VA cl. 0.5 Fs < VA 5P VA 5P20 AD21/N N0 25 AD21/N N VA cl. 0.5 Fs < VA 5P10 AD22/N N VA cl. 0.5 Fs < VA 5P VA 5P20 ARJD/N N VA cl. 0.5 Fs < VA 5P10 ARJD/N N0 100 / VA cl. 0.5 Fs < VA 5P VA 5P20 AD21/N N0 AD VA cl. 0.5 Fs < VA 5P10 AD21/N N VA cl. 0.5 Fs < VA 5P VA 5P20 AD22/N N VA cl. 0.5 Fs < VA 5P10 AD22/N N VA cl. 0.5 Fs < VA 5P VA 5P20 ARJD/N N0 200 / AD21/N N0 40 AD21/N N VA cl. 0.5 Fs < VA 5P10 AD21/N N VA cl. 0.5 Fs < VA 5P VA 5P20 AD22/N N0 AD / AD21/N N0 600 / VA cl. 0.5 Fs < 10 AD21/N N0 750 / AD21/N N / VA cl. 0.5 Fs < 10 AD23/N N / AD23/N N / AD23/N N / AD23/N N / AD23/N N0 ARJD Dimensions page 21 14
8 24 kv primary conductor support CT - single secondary DE58006 DE58008 DE58006 DE58007 DE58008 Ur 24 kv Ud 50 kv - 1 min Up 125 kv peak DE58007 Single secondary metering CT Power, accuracy class, safety factor FS 25 / VA cl. 0.5 Fs < 10 ARJM2/N1J N0 25 ARJM2/N1J N0 50 / 5 16 ARJP1/N1J N0 25 ARJM2/N1J N ARJM2/N1J N0 75 / 5 25 ARJP1/N1J N ARJP1/N1J N0 40 ARJM2/N1J N0 100 / 5 25 ARJP1/N1J N ARJP1/N1J N0 40 ARJM2/N1J N0 200 / 5 25 ARJP1/N1J N ARJP1/N1J N0 ARJM2 ARJP1 40 ARJP1/N1J N0 400 / 5 40 ARJP1/N1J N0 600 / VA cl. 0.5 Fs < 10 ARJP1/N1J N0 750 / 5 50 ARJP1/N1J N / VA cl. 0.5 Fs < 10 ARJP3/N1J N / 5 50 ARJP3/N1J N / 5 50 ARJA1/N1J N / 5 50 ARJA1/N1J N0 ARJP3 ARJA / 5 50 ARJA1/N1J N0 Dimensions page 22 Ur 24 kv Ud 50 kv - 1 min Up 125 kv peak DE58009 DE58006 Single secondary protection CT Power and accuracy class (possible double use) 25 / VA 5P10 ARJM2/N1J N VA 5P VA 5P20 ARJH/N1J N VA 5P10 ARJM2/N1J N VA 5P VA 5P20 ARJH/N1J N0 50 / VA 5P10 ARJP1/N1J N VA 5P VA 5P20 ARJP2/N1J N VA 5P10 ARJP2/N1J N VA 5P VA 5P20 ARJM2/N1J N ARJH/N1J N VA 5P10 ARJH/N1J N0 75 / 5 25 ARJP1/N1J N VA 5P VA 5P20 ARJP2/N1J N VA 5P10 ARJP2/N1J N VA 5P VA 5P20 ARJM2/N1J N VA 5P10 ARJP2/N1J N0 ARJM2 ARJH VA 5P VA 5P20 ARJH/N1J N0 100 / VA 5P10 ARJP1/N1J N VA 5P VA 5P20 ARJP2/N1J N VA 5P10 ARJP1/N1J N VA 5P VA 5P20 ARJP2/N1J N VA 5P10 ARJP2/N1J N VA 5P VA 5P20 ARJH/N1J N0 200 / ARJP1/N1J N0 40 ARJP1/N1J N0 ARJP1 ARJP VA 5P10 ARJP1/N1J N VA 5P VA 5P20 ARJP2/N1J N0 400 / 5 40 ARJP1/N1J N0 600 / 5 50 ARJP1/N1J N0 750 / 5 50 ARJP1/N1J N / VA 5P20 ARJP3/N1J N / 5 50 ARJP3/N1J N / VA 5P20 ARJA1/N1J N0 ARJP3 ARJA / 5 50 ARJA1/N1J N0 Dimensions page / 5 50 ARJA1/N1J N0 DE58010 DE
9 24 kv primary conductor support CT - double secondary DE58006 DE58010 DE58006 Insulation level and frequency Ur 24 kv Ud 50 kv - 1 min Up 125 kv peak Double secondary metering and protection CT Metering secondary: Metering secondary: power, accuracy power and accuracy class, safety factor class (possible double FS use) 25 / VA cl. 0.5 Fs < VA 5P10 ARJH/N2J N0 20 ARJH/N2J N0 50 / ARJP2/N2J N VA cl. 0.5 Fs < VA 5P VA 5P20 ARJM2/N2J N VA cl. 0.5 Fs < VA 5P10 ARJP2/N2J N VA cl. 0.5 Fs < VA 5P VA 5P20 ARJH/N2J N ARJH/N2J N0 75 / VA cl. 0.5 Fs < VA 5P10 ARJP2/N2J N VA cl. 0.5 Fs < VA 5P VA 5P20 ARJM2/N2J N VA cl. 0.5 Fs < VA 5P10 ARJP2/N2J N VA cl. 0.5 Fs < VA 5P VA 5P20 ARJM2/N2J N VA cl. 0.5 Fs < VA 5P10 ARJP2/N2J N VA cl. 0.5 Fs < VA 5P VA 5P20 ARJH/N2J N VA cl. 0.5 Fs < VA 5P10 ARJH/N2J N0 ARJH 100 / ARJP2/N2J N VA cl. 0.5 Fs < VA 5P VA 5P20 ARJM2/N2J N VA cl. 0.5 Fs < VA 5P10 ARJP2/N2J N VA cl. 0.5 Fs < VA 5P VA 5P20 ARJH/N2J N VA cl. 0.5 Fs < VA 5P10 ARJP2/N2J N VA cl. 0.5 Fs < VA 5P VA 5P20 ARJH/N2J N0 200 / ARJP2/N2J N ARJP2/N2J N0 ARJP VA cl. 0.5 Fs < VA 5P10 ARJP2/N2J N VA cl. 0.5 Fs < VA 5P VA 5P20 ARJH/N2J N0 400 / ARJP2/N2J N0 600 / VA cl. 0.5 Fs < 10 ARJP2/N2J F0 750 / ARJP2/N2J F / VA cl. 0.5 Fs < VA 5P20 ARJP3/N2J F / ARJP3/N2J F / VA 5P20 ARJA1/N2J F / ARJA1/N2J F0 ARJM / ARJA1/N2J F0 DE58008 ARJP3 DE58009 ARJA1 Dimensions page 22 16
10 36 kv primary conductor support CT - single secondary DE58011 DE58011 Ur 36 kv Ud 70 kv - 1 min Up 170 kv peak DE58012 Single secondary metering CT Power, accuracy class, safety factor FS 25 / VA cl. 0.5 Fs < 10 ARM6T/N N0 20 ARM6T/N N0 50 / 5 16 ARM6T/N N0 25 ARM6T/N N ARM6T/N N0 75 / 5 25 ARM6T/N N ARM6T/N N0 40 ARM6T/N N0 100 / 5 25 ARM6T/N N ARM6T/N N0 40 ARM6T/N N0 200 / 5 25 ARM6T/N N ARM6T/N N0 40 ARM6T/N N0 400 / 5 40 ARM6T/N N0 600 / VA cl. 0.5 Fs < 10 ARM6T/N N0 750 / 5 40 ARM6T/N N / VA cl. 0.5 Fs < 10 ARM9T/N N / 5 40 ARM9T/N N / 5 40 ARM9T/N N0 ARM6T ARM9T 2000 / 5 40 ARM9T/N N0 Dimensions page / 5 40 ARM9T/N N0 Ur 36 kv Ud 70 kv - 1 min Up 170 kv peak DE58012 Single secondary protection CT Power and accuracy class (possible double use) 25 / VA 5P10 ARM6T/N N VA 5P VA 5P20 ARM9T/N N VA 5P10 ARM6T/N N VA 5P VA 5P20 ARM9T/N N0 50 / 5 16 ARM6T/N N0 25 ARM6T/N N VA 5P10 ARM6T/N N VA 5P VA 5P20 ARM9T/N N VA 5P10 ARM9T/N N0 75 / VA 5P VA 5P20 ARM6T/N N ARM6T/N N VA 5P10 ARM6T/N N VA 5P VA 5P20 ARM9T/N N0 100 / 5 25 ARM6T/N N ARM6T/N N VA 5P10 ARM6T/N N VA 5P VA 5P20 ARM9T/N N0 200 / 5 25 ARM6T/N N ARM6T/N N0 40 ARM6T/N N0 400 / 5 40 ARM6T/N N0 600 / 5 40 ARM6T/N N0 750 / 5 40 ARM6T/N N / VA 5P20 ARM9T/N N / 5 40 ARM9T/N N / VA 5P20 ARM9T/N N0 ARM6T ARM9T 2000 / 5 40 ARM9T/N N0 Dimensions page / 5 40 ARM9T/N N0 17
11 36 kv primary conductor support CT - double secondary DE58011 DE58012 Insulation level and frequency Ur 36 kv Ud 70 kv - 1 min Up 170 kv peak Double secondary metering and protection CT Metering secondary: Metering secondary: power, accuracy power and accuracy class, safety factor class (possible double FS use) 25 / VA cl. 0.5 Fs < VA 5P10 ARM6T/N N0 20 ARM9T/N N0 50 / ARM6T/N N VA cl. 0.5 Fs < VA 5P VA 5P20 ARM9T/N N VA cl. 0.5 Fs < VA 5P10 ARM6T/N N VA cl. 0.5 Fs < VA 5P VA 5P20 ARM9T/N N VA cl. 0.5 Fs < VA 5P10 ARM9T/N N0 75 / ARM6T/N N VA cl. 0.5 Fs < VA 5P VA 5P20 ARM9T/N N VA cl. 0.5 Fs < VA 5P10 ARM6T/N N VA cl. 0.5 Fs < VA 5P VA 5P20 ARM9T/N N VA cl. 0.5 Fs < VA 5P10 ARM9T/N N0 100 / ARM6T/N N VA cl. 0.5 Fs < VA 5P VA 5P20 ARM9T/N N VA cl. 0.5 Fs < VA 5P10 ARM6T/N N VA cl. 0.5 Fs < VA 5P VA 5P20 ARM9T/N N VA cl. 0.5 Fs < VA 5P10 ARM6T/N N0 200 / ARM6T/N N VA cl. 0.5 Fs < VA 5P VA 5P20 ARM9T/N N VA cl. 0.5 Fs < VA 5P10 ARM6T/N N VA cl. 0.5 Fs < VA 5P VA 5P20 ARM9T/N N VA cl. 0.5 Fs < VA 5P10 ARM6T/N N0 ARM6T VA cl. 0.5 Fs < VA 5P VA 5P20 ARM9T/N N0 400 / VA cl. 0.5 Fs < VA 5P10 ARM6T/N N VA cl. 0.5 Fs < VA 5P VA 5P20 ARM9T/N N0 600 / VA cl. 0.5 Fs < VA 5P10 ARM6T/N N VA cl. 0.5 Fs < VA 5P VA 5P20 ARM9T/N N0 750 / VA cl. 0.5 Fs < VA 5P10 ARM6T/N N VA cl. 0.5 Fs < VA 5P VA 5P20 ARM9T/N N / VA cl. 0.5 Fs < VA 5P20 ARM9T/N N / ARM9T/N N0 ARM9T 1500 / VA 5P20 ARM9T/N N0 Dimensions page / ARM9T/N N / ARM9T/N N0 18
12 kv - slip-over CT single and double secondary Ur 17.5 kv Ud 38 kv - 1 min Up 95 kv peak Ur 24 kv Ud 50 kv - 1 min Up 125 kv peak Ur 36 kv Ud 70 kv - 1 min Up 170 kv peak Ur 17.5 kv Ud 38 kv - 1 min Up 95 kv peak Ur 24 kv Ud 50 kv - 1 min Up 125 kv peak Ur 36 kv Ud 70 kv - 1 min Up 170 kv peak Single secondary metering CT Power, accuracy class, safety factor FS 2500 / VA cl. 0.5 Fs < 10 ARO1b/N N / 5 50 ARO1b/N N / VA cl. 0.5 Fs < 10 ARO2/N N / 5 50 ARO2/N N / VA cl. 0.5 Fs < 10 ARO2/N N / 5 50 ARO2/N N0 Single secondary protection CT Power and accuracy class (possible double use) 2500 / VA 5P20 ARO1b/N N / 5 50 ARO1b/N N / VA 5P20 ARO2/N N / 5 50 ARO2/N N / VA 5P20 ARO2/N N / 5 50 ARO2/N N0 Insulation level and frequency Ur 17.5 kv Ud 38 kv - 1 min Up 95 kv peak Ur 24 kv Ud 50 kv - 1 min Up 125 kv peak Ur 36 kv Ud 70 kv - 1 min Up 170 kv peak Double secondary metering and protection CT Metering secondary: Metering secondary: power, accuracy power and accuracy class, safety factor class (possible FS double use) 2500 / VA cl. 0.5 Fs < VA 5P20 ARO1b/N N / ARO1b/N N / VA cl. 0.5 Fs < VA 5P20 ARO2/N N / ARO2/N N / VA cl. 0.5 Fs < VA 5P20 ARO2/N N / ARO2/N N0 DE58013 DE58014 ARO1b Dimensions page 23 ARO2 19
13 0.72 kv closed core CT - single and double secondary DE58015 Ur 0.72 kv Ud 3 kv - 1 min DE58016 Single secondary metering CT Power, accuracy class, safety factor FS 150 / VA cl. 0.5 Fs < 10 ARC2/N N0 200 / 5 50 ARC2/N N0 250 / VA cl. 0.5 Fs < 10 ARC2/N N0 300 / 5 50 ARC2/N N0 400 / 5 50 ARC2/N N0 600 / VA cl. 0.5 Fs < 10 ARC2/N N0 750 / 5 50 ARC3/N N / VA cl. 0.5 Fs < 10 ARC3/N N / 5 50 ARC3/N N0 ARC2 ARC3 Dimensions page 23 DE58015 Ur 0.72 kv Ud 3 kv - 1 min DE58016 Single secondary protection CT Power and accuracy class (possible double use) 75 / VA 5P20 ARC2/N N0 100 / 5 50 ARC2/N N0 150 / VA 5P20 ARC2/N N0 200 / 5 50 ARC2/N N0 250 / 5 50 ARC2/N N0 300 / 5 50 ARC2/N N0 400 / 5 50 ARC2/N N0 600 / VA 5P20 ARC2/N N0 750 / 5 50 ARC3/N N / VA 5P20 ARC3/N N0 ARC2 ARC / 5 50 ARC3/N N0 Dimensions page 23 DE58015 Insulation level and frequency Ur 0.72 kv Ud 3 kv - 1 min Double secondary metering and protection CT Metering secondary: Metering secondary: power, accuracy power and accuracy class, safety factor class (possible FS double use) 250 / VA cl. 0.5 Fs < 10 5 VA 5P20 ARC2/N N0 300 / ARC2/N N0 400 / VA cl. 0.5 Fs < 10 ARC2/N N0 600 / VA cl. 0.5 Fs < VA 5P20 ARC2/N N0 750 / ARC3/N N / VA cl. 0.5 Fs < VA 5P20 ARC3/N N / ARC3/N N0 ARC2 DE58016 ARC3 Dimensions page 23 20
14 Dimensions AD12 DE52378 DE52459 AD13 DE52379 DE58052EN 102 K P1 L P2 4 holes Ø 11 Secondary terminal and M5 screw type earthing connector AD21 DE52380 DE52461 AD22 DE52420 DE52462 ARJD DE52420 DE52464 AD23 DE52381 DE
15 Dimensions (cont.) ARJP1 DE52387 DE52468 ARJP2 DE52388 DE52470 ARJM2 DE52386 DE52465 ARJH DE52385 DE52469 ARJP3 DE52389 DE58045EN Optional plastic cover on secondary Secondary terminal and M6 screw type earthing connector 4 locations Ø 11 ARJA1 DE52384 DE58046EN Optional plastic cover on secondary Secondary terminal and M6 screw type 333 earthing connector locations Ø 11 22
16 Dimensions (cont.) ARM6T DE52390 DE52474 ARM9T DE52391 DE52472 ARO1b DE52392 DE58049EN 248 Optional plastic cover on secondary Link between primary and the shield (length 300 mm) Secondary terminal and M6 screw type earthing connector Tightening torque 10 Nm holes Ø 11 ARO2 DE52393 DE52471 ARC2 DE52444 DE52473 ARC3 DE52445 DE
17 LPCT: Electronic transformers Selection guide Technical description DE58034 LPCT s (Low Power Current Transformers) meet IEC standard IEC These are CT s with a direct voltage output which has the advantage of having a very wide range of applications, simplifying selection. LPCT low power transformers LPCT s are specifi c sensors with a direct voltage output of the Low Power Current Transformers type, in conformity with standard IEC LPCT s provide metering and protection functions. They are defi ned by: b b the rated primary the extended primary the accuracy limit primary or the accuracy limit factor. b These have a linear response over a large range and do not start to saturate until beyond the s to be broken. Examples of LPCT characteristics according to IEC standard These characteristics are summarized in the curves below. They show the maximum error limits (as an absolute value) on the and the phase corresponding to the accuracy class for the given examples. They give the same error limits shown for these classes in page 9, but with much wider ranges, which gives an advantage to this type of sensor. Example for metering class 0.5 b rated primary Ipn = 100 A b extended primary Ipe = 1250 A b secondary voltage Vsn = 22.5 mv (for 100 A on the secondary) b class 0.5: v accuracy (see defi nitions page 13) on: - the primary module 0.5% (error y ± 0.5%) - the primary phase 60 min (error y 30 minutes) over a range of 100 A to 1250 A v accuracy 0.75% and 45 min at 20 A v accuracy 1.5% and 90 min at 5 A. which are two metering points specifi ed by the standard. Example for class 5P protection b primary Ipn = 100 A b secondary voltage Vsn = 22.5 mv b class 5P: v accuracy (see defi nitions page 9) on: - the primary module 5% (error y ± 5%) - the primary phase 60 min (error y 60 minutes) on a range of 1.25 ka to 40 ka. The LPCT and Sepam guarantees a very high coverage range and fl exibility of usage. Example: protection system with CLP1 or CLP2 and Sepam guaranteeing a usage range of 5 A to 1250 A. DE52476 Accuracy characteristics of a LPCT (example of Schneider Electric s CLP1): the accuracy classes are given for extended ranges (here class 0.5 for metering from 100 to 1250 A and protection class 5P from 1.25 to 40 ka). 24
18 LPCT: Electronic transformers Primary rated extended (A) (A) Secondary voltage (mv) Accuracy class Accuracy limit factor FLP (ka - 1 s) Rated insulation (kv) Secondary connector Internal diameter (mm) Type Reference Qty P RJ45-8 pts CLP P RJ45-8 pts CLP F P RJ45-8 pts CLP3 AAA P RJ45-8 pts 160 TLP160 AAA P RJ45-8 pts 190 TLP190 AAA10095 Frequency and insulation Frequency (Hz) Ur (kv) Ud (kv - 1 min) 50 / Up (kv peak) 25
19 LPCT: Electronic transformers Dimensions CLP1 DE52394 DE52373EN M8 x Shielded cable L = 6,5 m 8-pin RJ45 connector CLP2 DE52395 DE52374EN 88.5 Shielded plug RJ45 8 pts 96.5 Shielded cable L = 6.5 m M8 x 12 Tightening torque 20 Nm CLP3 DE52396 DE52375EN Shielded plug RJ45 8 pts 96.5 Shielded cable L = 6.5 m M8 x 12 Tightening torque 20 Nm TLP160 PE56703 DE52376EN Shielded cable L = 6.5 m Shielded plug RJ45 8 pts TLP190 DE52397 DE52377EN Shielded cable L = 6.5 m Shielded plug RJ45 8 pts 26
Medium Voltage. KOFD Indoor Type Current Transformers Cast Resin Insulated. Catalogue. 12, 13.8, 17.5, 24 and 36 kv KOFD 1 GB
Catalogue Indoor Current Transformers Cast Resin Insulated 1, 13.8, 17.5, 4 and 36 kv 97-1 96-1054 Medium Voltage 1 Indoor Current Transformers Cast Resin Insulated 1, 13.8, 17.5, 4 and 36 kv Index Description...
Technical information
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