CTs: Current Transformers Order form - studiecd.dk

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CTs: Current TransformersSelection guideUsing the order formsThe tables on the following pages allow you to defi ne the current transformerreference 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 explainedin the example given below for a DIN type metering CT, in reference to the previousdefi nitions.Networkinsulation 12 kVRated primarycurrent 75 Aand secondaryoutput 5 AShort-timethermal currentMV side31.5 A - 1 sPower supplied to thesecondary 15 VA.Accuracy class0.5 defi nes the meteringerror limits.The safety factor is < 10Mark thequantity tobe orderedDE58001Insulation level and frequencyUr 12 kVUd 28 kV - 1 minUp 75 kV peakTransformationratioA / AShort-time Power, accuracy class,thermal current safety factor FSkA x 1 sType Reference Quantity50 / 5 12.5 15 VA cl. 0.5 Fs < 10 AD12 03811366N016 AD12 03811368N075 / 5 25 AD12 03811371N031.5 AD12 03811373N0fr 50/60 Hz 100 / 5 25 AD12 03811376N031.5 AD12 03811378N0200 / 5 25 AD12 03811380N031.5 AD12 03811382N040 AD12 03811384N0400 / 5 40 AD12 03811386N0600 / 5 50 20 VA cl. 0.5 Fs < 10 AD12 03811388N0750 / 5 50 AD12 03811390N0AD12N1 AD13N1 1000 / 5 50 30 VA cl. 0.5 Fs < 10 AD13 03811392N0Dimensions page 21 1250 / 5 50 AD13 03811394N0DE58002Calculating the power (VA)Indicative metering consumptionsDeviceAmmeter Electromagnetic 3Electronic 1Transducer Self-powered 3External powered 1Meter Induction 2Electronic 1Wattmeter, varmeter 1Indicative protection consumptionDeviceStatic over-current relay 0.2 to 1Electromagnetic over-current relay 1 to 8Indicative secondary cabling consumptionCables (mm 2 )Max. consumptionin VA (per circuit)Max. consumptionin VA (per circuit)Consumption (VA/m)1 A 5 A2.5 0.008 0.24 0.005 0.136 0.003 0.0910 0.002 0.0511
CTs: Current TransformersOrder formDIN standard 12 kV CT -single and double secondaryDE58001DE58001DE58001Insulation level and frequencyUr 12 kVUd 28 kV - 1 minUp 75 kV peakfr 50/60 HzDE58002TransformationratioA / ASingle secondary metering CTShort-timethermalcurrentkA x 1 sPower, accuracy class,safety factor FSType Reference Qty50 / 5 12.5 15 VA cl. 0.5 Fs < 10 AD12/N1 03811366N016 AD12/N1 03811368N075 / 5 25 AD12/N1 03811371N031.5 AD12/N1 03811373N0100 / 5 25 AD12/N1 03811376N031.5 AD12/N1 03811378N0200 / 5 25 AD12/N1 03811380N031.5 AD12/N1 03811382N040 AD12/N1 03811384N0400 / 5 40 AD12/N1 03811386N0600 / 5 50 20 VA cl. 0.5 Fs < 10 AD12/N1 03811388N0750 / 5 50 AD12/N1 03811390N0AD12 AD13 1000 / 5 50 30 VA cl. 0.5 Fs < 10 AD13/N1 03811392N0Dimensions page 21 1250 / 5 50 AD13/N1 03811394N0Insulation level and frequencyUr 12 kVUd 28 kV - 1 minUp 75 kV peakfr 50/60 HzDE58002TransformationratioA / ASingle secondary protection CTShort-timethermalcurrentkA x 1 sPower and accuracy class(possible double use)Type Reference Qty50 / 5 12.5 15 VA 5P10 - 7.5 VA 5P20 AD12/N1 03811367N016 AD12/N1 03811369N025 7.5 VA 5P10 AD12/N1 03811370N075 / 5 25 15 VA 5P10 - 7.5 VA 5P20 AD12/N1 03811372N031.5 7.5 VA 5P10 AD12/N1 03811374N040 AD12/N1 03811375N0100 / 5 25 15 VA 5P10 - 7.5 VA 5P20 AD12/N1 03811377N031.5 AD12/N1 03811379N040 7.5 VA 5P10 AD12/N1 03811839N0200 / 5 25 15 VA 5P10 - 7.5 VA 5P20 AD12/N1 03811381N031.5 AD12/N1 03811383N040 AD12/N1 03811385N0400 / 5 40 AD12/N1 03811387N0600 / 5 50 AD12/N1 03811389N0750 / 5 50 AD12/N1 03811391N0AD12 AD13 1000 / 5 50 10 VA 5P20 AD13/N1 03811393N0Dimensions page 21 1250 / 5 50 AD13/N1 03811395N0Insulation leveland frequencyUr 12 kVUd 28 kV - 1 minUp 75 kV peakfr 50/60 HzTransformationratioA / ADouble secondary metering and protection CTShort-time Metering secondary: Metering secondary: Type Reference Qtythermal current power, accuracy power and accuracykA x 1 s class, safety factor class (possibleFSdouble use)50 / 5-5 12.5 7.5 VA cl. 0.5 Fs < 10 7.5 VA 5P10 AD12/N2 03811396N016 AD12/N2 03811397N075 / 5-5 16 AD12/N2 03811398N025 AD12/N2 03811399N0100 / 5-5 25 AD12/N2 03811400N031.5 AD12/N2 03811401N0200 / 5-5 25 15 VA cl. 0.5 Fs < 10 15 VA 5P10 - 7.5 VA AD12/N2 03811402N05P2031.5 AD12/N2 03811403N040 7.5 VA cl. 0.5 Fs < 10 7.5 VA 5P10 AD12/N2 03811404N0400 / 5-5 40 15 VA cl. 0.5 Fs < 10 15 VA 5P10 - 7.5 VA AD12/N2 03811405N05P20600 / 5-5 50 20 VA cl. 0.5 Fs < 10 AD12/N2 03811406N0AD12 750 / 5-5 50 AD12/N2 03811407N0Dimensions page 21 1000 / 5-5 50 30 VA cl. 0.5 Fs < 10 10 VA 5P20 AD13/N2 03811408N01250 / 5-5 50 AD13/N2 03811409N012
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Page 3: CTs: Current TransformersSelection
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Page 17 and 18: LPCT: Electronic currenttransformer
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CTs: Current Transformers Order form - studiecd.dk

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