Wound-Type Current Transformer
MR SERIES
Introduction
The MR series current transformer brings an updated design to electrical systems, catering to diverse applications such as current measurement, monitoring, and protection for electrical wiring and equipment. This indispensable device serves a crucial purpose in transforming high AC currents into smaller, more manageable values. With their primary winding, secondary winding, magnetic core, and insulated body, MR current transformers provide a comprehensive solution for accurate and efficient current management.
One notable advantage of the MR series current transformer lies in its versatility. Designed to adapt to various electrical setups, it offers the flexibility of connecting with both cables and bus bars. This adaptability ensures seamless integration within different power distribution systems.
These features make the MR series highly efficient across various industrial installations. They play a vital role in maintaining safety, preventing overloads, and ensuring the overall stability of the power network.
Specially designed for the ILEC brand (Vietnam), MR iLEC wound-type current transformers are premium low-voltage measurement devices. They are engineered to safely convert high primary currents into a standard secondary current of 5A (or 1A) for metering and protection equipment.
Applications
- Current measurement, monitoring and piotection for electrical wiring and equipment.
- Current and power measurement for electric motors, lighting, air compressor, heating and ventilation system,air-condition equipment and automation-control system.
- Current, power and energy monitoring device.
- Relay protection device.
Features of iLEC MR Wound-Type CT
- Premium Low-Voltage Solution: Specifically engineered for the iLEC brand (Vietnam) as an accurate low-voltage electrical measurement device.
- Efficient Current Conversion: Safely transforms high primary AC currents into a standard, manageable secondary current of 5A or 1A.
- Wound-Type Technology: Feature a robust design with a high-quality primary winding, secondary winding, magnetic core, and an insulated body.
- Flexible Connection: Offers high versatility with the ability to connect seamlessly with both cables and bus bars.
- Multi-Purpose Applications: Highly efficient for current measurement, continuous monitoring, and overload/safety protection in electrical systems.
- System Stability: Plays a vital role in maintaining the safety, preventing overloads, and ensuring the overall stability of industrial and commercial power networks.
Ordering Code
General Specifications
Parameter
Value
System voltage
Max. 720V
Test voltage
3kV for 1 minute
System frequency
50/60Hz
Overload withstand
1.2 x rated current continuously
Short circuit thermal: 60 x rated primary current
for 1 second current (Ith)
50/60Hz
Dynamic current (Idyn):
2.55 x Ith
Serivce temperature:
-20º ~ 70ºC
Secondary current:
5A or 1A
MR Series Selection Guide
Model
Product Code
Ratio
Accuracy Class
Rated Burden
Inside Diameter
(Unit: mm)
MR-28
MR-28-0050
50/5A
CL.3
3VA
Ø28
MR-28-0075
75/5A
CL.3
3VA
Ø28
MR-35
MR-35-0100
100/5A
CL.1
5VA
Ø35
MR-35-0150
150/5A
CL.1
5VA
Ø35
MR-35-0200
200/5A
CL.1
5VA
Ø35
MR-35-0250
250/5A
CL.1
5VA
Ø35
MR-35-0300
300/5A
CL.1
5VA
Ø35
MR-45
MR-45-0400
400/5A
CL.1
10VA
Ø45
MR-45-0500
500/5A (*)
CL.1
10VA
Ø45
MR-65
MR-65-0500
500/5A
CL.1
5VA
Ø65
MR-65-0600
600/5A
CL.1
5VA
Ø65
MR-90
MR-90-0800
800/5A
CL.1
15VA
Ø90
MR-90-1000
1000/5A
CL.1
15VA
Ø90
MR-90-1200
1200/5A
CL.1
15VA
Ø90
MR-110
MR-110-1600
1600/5A
CL.1
20VA
Ø110
MR-110-2000
2000/5A
CL.1
20VA
Ø110
MR-130
MR-130-2500
1600/5A
CL.1
20VA
Ø130
MR-130-3000
3000/5A
CL.1
20VA
Ø130
MR-130-4000
4000/5A
CL.1
20VA
Ø130
MR-200
MR-200-5000
5000/5A
CL.1
20VA
Ø200
MR-200-6000
6000/5A
CL.1
20VA
Ø200
- Premium Low-Voltage Solution: Specifically engineered for the iLEC brand (Vietnam) as an accurate low-voltage electrical measurement device.
- Efficient Current Conversion: Safely transforms high primary AC currents into a standard, manageable secondary current of 5A or 1A.
- Wound-Type Technology: Feature a robust design with a high-quality primary winding, secondary winding, magnetic core, and an insulated body.
- Flexible Connection: Offers high versatility with the ability to connect seamlessly with both cables and bus bars.
- Multi-Purpose Applications: Highly efficient for current measurement, continuous monitoring, and overload/safety protection in electrical systems.
- System Stability: Plays a vital role in maintaining the safety, preventing overloads, and ensuring the overall stability of industrial and commercial power networks.
Ordering Code
General Specifications
| Parameter | Value |
| System voltage | Max. 720V |
| Test voltage | 3kV for 1 minute |
| System frequency | 50/60Hz |
| Overload withstand | 1.2 x rated current continuously |
| Short circuit thermal: 60 x rated primary current for 1 second current (Ith) |
50/60Hz |
| Dynamic current (Idyn): | 2.55 x Ith |
| Serivce temperature: | -20º ~ 70ºC |
| Secondary current: | 5A or 1A |
MR Series Selection Guide
| Model | Product Code | Ratio | Accuracy Class | Rated Burden | Inside Diameter (Unit: mm) |
| MR-28 | MR-28-0050 | 50/5A | CL.3 | 3VA | Ø28 |
| MR-28-0075 | 75/5A | CL.3 | 3VA | Ø28 | |
| MR-35 | MR-35-0100 | 100/5A | CL.1 | 5VA | Ø35 |
| MR-35-0150 | 150/5A | CL.1 | 5VA | Ø35 | |
| MR-35-0200 | 200/5A | CL.1 | 5VA | Ø35 | |
| MR-35-0250 | 250/5A | CL.1 | 5VA | Ø35 | |
| MR-35-0300 | 300/5A | CL.1 | 5VA | Ø35 | |
| MR-45 | MR-45-0400 | 400/5A | CL.1 | 10VA | Ø45 |
| MR-45-0500 | 500/5A (*) | CL.1 | 10VA | Ø45 | |
| MR-65 | MR-65-0500 | 500/5A | CL.1 | 5VA | Ø65 |
| MR-65-0600 | 600/5A | CL.1 | 5VA | Ø65 | |
| MR-90 | MR-90-0800 | 800/5A | CL.1 | 15VA | Ø90 |
| MR-90-1000 | 1000/5A | CL.1 | 15VA | Ø90 | |
| MR-90-1200 | 1200/5A | CL.1 | 15VA | Ø90 | |
| MR-110 | MR-110-1600 | 1600/5A | CL.1 | 20VA | Ø110 |
| MR-110-2000 | 2000/5A | CL.1 | 20VA | Ø110 | |
| MR-130 | MR-130-2500 | 1600/5A | CL.1 | 20VA | Ø130 |
| MR-130-3000 | 3000/5A | CL.1 | 20VA | Ø130 | |
| MR-130-4000 | 4000/5A | CL.1 | 20VA | Ø130 | |
| MR-200 | MR-200-5000 | 5000/5A | CL.1 | 20VA | Ø200 |
| MR-200-6000 | 6000/5A | CL.1 | 20VA | Ø200 |