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Current transformers

Current transformers
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Current transformers

Product catalog summary
General Characteristics
The document outlines the use of current transformers (C.T.) to reduce line current to secondary values of 5A or 1A. For electronic applications, C.T.s offer secondary values in A.C. current (50mA - 200mA), A.C. voltage (2V - 10V), and D.C. voltage (10V). These transformers, made with iron cores, can be toroidal or rectangular and are insulated with thermoplastic materials. They are tested with S.I.T. certified equipment. Two primary types exist: wound primary for low current values and primary passing for higher values.
Technical Characteristics
C.T.s feature an ABS self-extinguishing case, operate at 40-60Hz, and can handle a dynamic nominal current of short circuit of 2.5 times the rated current for 1 second. They withstand a thermal nominal current of short circuit of 40-80 times the rated current for 1 second. The voltage insulating reference is 0.72 KV (1.2 KV on request) with a testing voltage of 3KV (6KV on request) at 50 Hz for 1 minute. The safety factor is N ≤ 5. The working temperature range is -25 to +50°C, and storage temperature range is -40 to +80°C. The protection degree is IP30, adhering to standards CEI 38-1, IEC 185, VDE 0414, EN600044-1, EN60044-1A.
Examples of Use
Examples illustrate how primary cable passages affect primary current value without altering technical features or precision class. For example, a 300/5A transformer with two loops results in a 150/5A output.
Power Consumption Table
A table shows power consumption (VA) between the C.T. and reading instrument cables for different wire sections and lengths.
Passing Cable Current Transformers
Specifications for various models include primary current, performance/burden, and cable or bus bar dimensions. Different classes (cl. 0.5, cl. 1, cl. 5P10) and their VA values are listed.
Wound Primary Current Transformers
Details include primary current, performance/burden, and dimensions, specifying different classes and their VA values.
Linear Current Transformers
Linear current transformers with AC/DC output are mentioned, with examples of order types and primary current specifications.
Main Characteristics
1. Types: TABL, TAB LC1, TAB LC2, TAB LD
2. Power Supply: Self-powered, 24V AC/DC
3. Models: Various models with different primary current ranges (e.g., 40 ÷ 5000A)
4. Output: Various outputs including 10V AC/DC, 0 ÷ 20mA, 0 ÷ 10V DC, etc.
5. Load: Minimum and maximum load specifications provided
6. Accuracy: Ranges from 0.5% to 1% depending on the model
Openable Current Transformers
1. Types: TAPR11, TAPR12, TAPR13, TAPR14, TAPR15
2. Primary Current: Ranges from 100A to 5000A
3. Burden: Specified for different classes (cl. 0.5, cl. 1)
4. Dimensions: Provided for each type
Voltage Transformers for Measuring Instruments
1. Execution: Standard, dry on air
2. Frequency: 50-60 Hz
3. Nominal Voltage: 1.2 Vn
4. Standards: CEI 38.2, IEC 186
5. Temperature: Operating (-25 to +50°C), Storage (-40 to +80°C)
6. Testing Voltage: Specified for different voltage ranges
Single Phase Separating and Power Transformers
1. Compliance: EN 61558-2-1, CEI 14-8, IEC 726
2. Insulation: Class B, 3.5kV between primary and secondary
3. Frequency: 50/60Hz
4. Protection: IP00, Electrical protection class I
5. Features: Open type, low losses lamination, resin impregnated
Shunt for D.C.
1. Purpose: Reduce continuous current to measurable voltage
2. Voltage Drop: Standard values (60 mV, 100 mV, 150 mV, 300 mV)
3. Construction: Manganin with brass support, silver welding
4. Technical Features: Accuracy class 0.5, Surcharge current specifications
Accessories
1. Supports for C.T. for DIN rail
2. Adapter for TAF faston caps
3. Protection for secondary output contacts
Note: The company reserves the right to modify specifications without notice.
See more

Catalog excerpts

Current transformers-1

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Current transformers-2

table.main {} tr.row {} td.cell {} div.block {} div.paragraph {} .font0 { font:12.00pt "Arial", sans-serif; } .font1 { font:20.00pt "Arial", sans-serif; } .font2 { font:23.00pt "Arial", sans-serif; } .font3 { font:54.00pt "Arial", sans-serif; } Trasformatori di corrente Current transformers CARATTERISTICHE GENERAL! I Irasformatori dl corrente (TA.) vengono ulillzzati per ridurre la corrente di Ihea ad un valore secondario di 5A oppure a lA. Per applicazionl su schede elettroniche vengono costruiti TA con vatori di secondario : / in corrente c.a..50mA- 60mA - 100mA -200mA / in tensione c.a. 2V...

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Current transformers-3

table.main {} tr.row {} td.cell {} div.block {} div.paragraph {} .font0 { font:12.00pt "Arial", sans-serif; } .font1 { font:16.00pt "Arial", sans-serif; } .font2 { font:20.00pt "Arial", sans-serif; } .font3 { font:23.00pt "Arial", sans-serif; } Trasformatori di corrente Current transformers CARATTERISTICHE TECNICHE Con ton i tore: in ABS autoestinguonto Օ Corrente:alsecondaho5A(1A)' » Frequonza di runaonamento: 40*60Hz CorrentenominalerJnaxntodiOTtoa^ 2.5 Mer per 1sec. Massimo valore di picco che il TA. puմ sopportare con il secon-darioin corto clrcuilo » Corrente nominale termce dl corto clrcuilo...

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Current transformers-7

7860_0439_cat_sezD.indd table.main {} tr.row {} td.cell {} div.block {} div.paragraph {} .font0 { font:6.00pt "Arial", sans-serif; } .font1 { font:7.00pt "Arial", sans-serif; } .font2 { font:10.00pt "Arial", sans-serif; } .font3 { font:13.00pt "Arial", sans-serif; } .font4 { font:15.00pt "Arial", sans-serif; } .font5 { font:6.00pt "Comic Sans MS", fantasy; } .font6 { font:15.00pt "Sylfaen", serif; } .font7 { font:11.00pt "Times New Roman", serif; } Trasformatori di corrente a barra passante Passing cable current transformers TAB 13 Corrente primaria Prestazione/burden primary current cl. 0,5...

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Current transformers-9

7860_0439_cat_sezD.indd table.main {} tr.row {} td.cell {} div.block {} div.paragraph {} .font0 { font:7.00pt "Arial", sans-serif; } .font1 { font:13.00pt "Arial", sans-serif; } .font2 { font:15.00pt "Arial", sans-serif; } Trasformatori di corrente a primario avvolto Wound primary current transformers TAP 3 barra □ bar □ mm Corrente primaria primary current A/5 Prestazione/burcfen cl. 0,5 VA cl. 1 VA 20 x 3 5 20 40 10 20 40 15 20 40 20 20 40 30 20 40 40 20 40 50 20 40 60 20 40 80 20 40 100 20 40 150 20 40 20 x 8 200 20 40 250 20 40 300 20 40 40 x 5 400 20 40 500 20 40 600 20 40 Trasformatori...

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Current transformers-11

7860_0439_cat_sezD.indd table.main {} tr.row {} td.cell {} div.block {} div.paragraph {} .font0 { font:6.00pt "Arial", sans-serif; } .font1 { font:7.00pt "Arial", sans-serif; } .font2 { font:9.00pt "Arial", sans-serif; } .font3 { font:11.00pt "Arial", sans-serif; } .font4 { font:13.00pt "Arial", sans-serif; } .font5 { font:15.00pt "Arial", sans-serif; } .font6 { font:30.00pt "Arial", sans-serif; } Trasformatori di corrente linearizzati - uscita in ca/cc Linear current transformers - output in AC/DC Esempio d'ordine example of order / exemple de commande TAB Tipo/ Type 1-2-3-4-5-55 Corrente primaria...

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Current transformers-13

table.main {} tr.row {} td.cell {} div.block {} div.paragraph {} .font0 { font:9.00pt "Arial", sans-serif; } .font1 { font:12.00pt "Arial", sans-serif; } .font2 { font:14.00pt "Arial", sans-serif; } .font3 { font:15.00pt "Arial", sans-serif; } .font4 { font:17.00pt "Arial", sans-serif; } .font5 { font:23.00pt "Arial", sans-serif; } .font6 { font:54.00pt "Arial", sans-serif; } .font7 { font:24.00pt "Courier New", monospace; } Trasformatori di tensione TV per strumenti di misura VTvoltagetransformers for measuringinstruments type| TV CARATTERISTTCHE GENERALITV Riducono ta tensione di inea ad un...

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Current transformers-15

table.main {} tr.row {} td.cell {} div.block {} div.paragraph {} .font0 { font:12.00pt "Arial", sans-serif; } .font1 { font:15.00pt "Arial", sans-serif; } .font2 { font:16.00pt "Arial", sans-serif; } .font3 { font:20.00pt "Arial", sans-serif; } .font4 { font:23.00pt "Arial", sans-serif; } Derivatori per corrente continua Shunt for D.C. CARATTERISTICHE GENERALI I derivatori (shunt) wngono uliizzatl per riourre la correrte continua in tensione che puo essore letta da strumenti di misura. I valori standard dlia caduta di tensione sono: 50 mV 镕 100 mV 150 mV Օ 300 mV A distanze elovate. dallo strumento....

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