*mydirectindustry

Catalogs
IME Spa
Low voltage transformers

Low voltage transformers

Product catalog summary

Low Voltage Transformers
Specifications for low voltage transformers include classes with specific ratio and angle error limits. The permissible errors are outlined for different percentages of nominal current (In) for classes 0.5, 1, and 3. Specifications for voltage transformers cover primary and secondary voltage ranges, frequency, insulation levels, and terminal protection degrees, referencing standard EN60044-2.

Voltage Transformers
IME provides instrument transformers with accuracy classes 0.5/1 and protection transformers class 3P. Primary voltages can reach up to 1000V, with secondary voltages at 100V, designed for frequencies between 47 and 63Hz, with specified insulation levels and terminal protection degrees.

Current Transformers
IME offers a range of current transformers, including instrument, accuracy, and protection transformers. Primary currents can reach up to 8000A, with secondary currents of 1A and 5A. Specifications include rated short-time thermal current, dynamic current, insulation levels, and terminal protection degrees, referencing standard EN60044-1.

Safety Recommendations
Current transformers should not operate with an open secondary winding due to risks of dangerous overvoltages and overheating. IME provides an accessory, ATAP015, to prevent such issues by automatically closing the circuit if voltage exceeds a threshold.

Technical Tables
Detailed tables list various transformer models, dimensions, primary current ratings, and burden values (VA) for different accuracy classes. Ordering codes and stock availability for specific models are also provided.

Overview
This document provides detailed specifications and ordering information for various current transformers used in electrical measurement applications, categorized by primary current ratings, burden VA, and secondary current ratings.

Specifications
Transformers are listed with primary current ratings from 50A to 4000A, specified with burden VA, secondary current ratings (5A and 1A), and accuracy classes (cl.0.5, cl.1, cl.3). Unique codes identify transformers for ordering and stock purposes.

Ordering Information
Each transformer model is associated with specific ordering codes for different accuracy classes, facilitating easy identification and procurement.

Accessories
Sealable terminal covers are available as accessories for transformers, with models like ATACOP01, ATACOP02, ATACOP03, and ATACOP04 mentioned for different transformer series.

Key Data
Tables detail burden VA and secondary current ratings for each transformer model, along with ordering codes, crucial for selecting appropriate transformers based on application requirements.

Conclusion
This technical document serves as a comprehensive guide for selecting and ordering current transformers, providing necessary specifications and accessory options to ensure compatibility and performance in electrical measurement systems.

Catalog excerpts

Current transformers - IME offer includes instrument transformers (class 0,5/1/3) pages 04÷11, accuracy transformers (class 0,2/0,2s/0,5s) pages 36÷39, protection transformers (class 5P5/10/15/20) pages 50÷53 and summation transformers (class 05/1) page 77 - Reference standard EN60044-1 - Passing cable/bar executions, wound primary, open-core type for passing cable/bar - Primary currents (Ipn) up to 8000A - Secondary currents (Isn) 1A and 5A - Frequency 47...63Hz (other values upon request) - Rated short-time thermal current (Ith): passing cable/bar models 60In (max. 60kA / 1 second) wound primary...

Open the catalog to page 2

Low voltage transformers Angle and ratio error limits for current transformers - Protection (EN60044-1) Angle error (±) Ratio error % (±) Class at primary limit current 5 * According to the models, the primary limit current corresponds to 5 - 10 - 15 - 20 times the primary rated current (In). Current transformers should not work with the secondary winding open because of overvoltages potentially dangerous as well as overheating which may occur and consequently damage both the transformer and the connected devices. To obviate this problem, IME propose a new accessory ATAP015 to be directly connected...

Open the catalog to page 3

Reasuming table Technical note passing primary winding passing primary winding passing primary winding passing primary winding passing primary winding Primary current

Open the catalog to page 4

Current transformers - Measuring passing primary winding passing primary winding passing primary winding passing primary winding passing primary winding passing primary winding

Open the catalog to page 5

Reasuming table Technical note passing primary winding passing primary winding passing primary winding passing primary winding passing primary winding

Open the catalog to page 6

Current transformers - Measuring passing primary winding passing primary winding passing primary winding passing primary winding passing primary winding passing primary winding

Open the catalog to page 7

Reasuming table Technical note passing primary winding passing primary winding passing primary winding passing primary winding passing primary winding Primary current

Open the catalog to page 8

Current transformers - Measuring passing primary winding passing primary winding passing primary winding passing primary winding passing primary winding passing primary winding 125

Open the catalog to page 9

Reasuming table Technical note wound primary winding wound primary winding wound primary winding wound primary winding wound primary winding passing primary winding

Open the catalog to page 10

Current transformers - Measuring passing primary winding open core open core open core open core open core

Open the catalog to page 11

TAIBB Primary current Ordering code sealable terminal cover Secondary 1A Ordering code

Open the catalog to page 12

Current transformers - Measuring Ordering code Secondary 1A Ordering code *sealable terminal cover Ordering code Ordering code *sealable terminal cover

Open the catalog to page 13

Ordering code Ordering code Ordering code *sealable terminal cover Secondary 1A Ordering code

Open the catalog to page 14

Current transformers - Measuring Ordering code Ordering code *sealable terminal cover Primary current Ordering code Ordering code *sealable terminal cover

Open the catalog to page 15

Ordering code Secondary 1A Ordering code *sealable terminal cover Ordering code *sealable terminal cover Secondary 1A Ordering code

Open the catalog to page 16

Current transformers - Measuring 60,5* 70 Ordering code Ordering code *sealable terminal cover Primary current Ordering code Ordering code *sealable terminal cover

Open the catalog to page 17

Primary current Ordering code Secondary 1A Ordering code *sealable terminal cover Ordering code *sealable terminal cover 48 Secondary 1A Ordering code

Open the catalog to page 18

Current transformers - Measuring 66 Ordering code Secondary 1A Ordering code *sealable terminal cover terminals on long side Primary current Ordering code *sealable terminal cover Secondary 1A Ordering code

Open the catalog to page 19

terminals on long side Primary current Ordering code Ordering code *sealable terminal cover Ordering code *sealable terminal cover Secondary 1A Ordering code

Open the catalog to page 20

Current transformers - Measuring 68,4 25* 33,5* terminals on long side Primary current Ordering code Ordering code *sealable terminal cover terminals on long side Primary current Ordering code *sealable terminal cover Secondary 1A Ordering code

Open the catalog to page 21

terminals on long side Primary current Ordering code Secondary 1A Ordering code *sealable terminal cover Primary current Ordering code *sealable terminal cover Ordering code

Open the catalog to page 22

Current transformers - Measuring 87 terminals on long side Primary current Ordering code *sealable terminal cover Secondary 1A Ordering code

Open the catalog to page 23

Ordering code Primary current Secondary 1A Ordering code *sealable terminal cover Ordering code *sealable terminal cover 58 Secondary 1A Ordering code

Open the catalog to page 24

Current transformers - Measuring 68,4 Primary current Ordering code Ordering code *sealable terminal cover Primary current Ordering code *sealable terminal cover Secondary 1A Ordering code

Open the catalog to page 25

Ordering code *sealable terminal cover Secondary 1A Ordering code

Open the catalog to page 26

Current transformers - Measuring Primary current Ordering code *sealable terminal cover Secondary 1A Ordering code

Open the catalog to page 27

Primary current Ordering code Ordering code *sealable terminal cover Ordering code Primary current Ordering code *sealable terminal cover Secondary 1A Ordering code *sealable terminal cover Primary current 110 Secondary 1A Ordering code

Open the catalog to page 28

Current transformers - Measuring Primary current Ordering code Ordering code Ordering code Primary current *sealable terminal cover Secondary 1A Ordering code

Open the catalog to page 29

Primary current Secondary 5A Ordering code Primary current Ordering code

Open the catalog to page 30

Current transformers - Measuring Primary current Ordering code *sealable terminal cover fixing on Rail Din Primary current Ordering code *sealable terminal cover fixing on Rail Din Ordering code Secondary 1A Ordering code

Open the catalog to page 31

Primary current Ordering code Secondary 1A Ordering code *sealable terminal cover fixing on Rail Din Primary current Ordering code *sealable terminal cover 85 131 Secondary 1A Ordering code

Open the catalog to page 32