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MR current transformers are used in feeder protection and energy metering application. There are two materials for customers to choose: resin casting and black tape. The resin color can be red or black. High grade annealed silicon steel core is used to provide high accuracy. Available in a wide variety of dimensions and current ratio rating. Customized model can be manufactured to customer specification.
| Series | low voltage current transformer |
| Item Number | MR |
| Rated Primary Current | 5A to 6300A |
| Rated Secondary Current | 5A, 1A |
| Rated Load | 2.5/5/10/20/40VA |
| Accuracy Class | 0.2S/ 0.5S/ 0.2/ 0.5/1.0 |
| Rated voltage | AC 0.66kV |
| Rated Frequency | 50/60Hz |
| Casing Material | black tape |
| Installation | busbar or floor mounting |
| Operating Temperature | -40℃ to +50℃ |
| Altitude | ≤ 3000m |
| Power Frequency Voltage Endurance | 3000V/1min |
| Operating humidity | ≤ 80% |
| Function | measurement of current and power; relay protection |
| Model | Ratio | Hole Dimensions | Rated Burden | Accuracy Class |
|---|---|---|---|---|
| MR-35 | 100/5A～200/5A | φ=35mm | 2.5～5VA | 1.0, 0.5, 0.2, 0.5S, 0.2S |
| MR-45 | 250/5A～400/5A | φ=45mm | 2.5～5VA | 1.0, 0.5, 0.2, 0.5S, 0.2S |
| MR-65 | 500/5A～800/5A | φ=65mm | 10～15VA | 1.0, 0.5, 0.2, 0.5S, 0.2S |
| MR-90 | 1000/5A～1600/5A | φ=90mm | 15～20VA | 1.0, 0.5, 0.2, 0.5S, 0.2S |
| MR-130 | 2000/5A～3200/5A | φ=130mm | 15～20VA | 1.0, 0.5, 0.2, 0.5S, 0.2S |
| MR-175 | 3000/5A～5000/5A | φ=175mm | 15～40VA | 1.0, 0.5, 0.2, 0.5S, 0.2S |
| MR-190 | 4000/5A～6300/5A | φ=190mm | 15～40VA | 1.0, 0.5, 0.2, 0.5S, 0.2S |
| MR-230 | 5000/5A～6300/5A | φ=230mm | 15～40VA | 1.0, 0.5, 0.2, 0.5S, 0.2S |
| MR-35 | 100/1A～200/1A | φ=35mm | 2.5～5VA | 1.0, 0.5, 0.2, 0.5S, 0.2S |
| MR-45 | 250/1A～400/1A | φ=45mm | 2.5～5VA | 1.0, 0.5, 0.2, 0.5S, 0.2S |
| MR-65 | 500/1A～800/1A | φ=65mm | 10～15VA | 1.0, 0.5, 0.2, 0.5S, 0.2S |
| MR-90 | 1000/1A～1600/1A | φ=90mm | 15～20VA | 1.0, 0.5, 0.2, 0.5S, 0.2S |
| MR-130 | 2000/1A～3200/1A | φ=130mm | 15～20VA | 1.0, 0.5, 0.2, 0.5S, 0.2S |
| MR-175 | 3000/1A～5000/1A | φ=175mm | 15～40VA | 1.0, 0.5, 0.2, 0.5S, 0.2S |
| MR-190 | 4000/1A～6300/1A | φ=190mm | 15～40VA | 1.0, 0.5, 0.2, 0.5S, 0.2S |
| MR-230 | 5000/1A～6300/1A | φ=230mm | 15～40VA | 1.0, 0.5, 0.2, 0.5S, 0.2S |
| Customized model can be manufactured to customer specification. | ||||
Window Size: according to the specification and number of busbars.
Rated Current Ratio: 1/3 larger than the measured primary current.
Rated Secondary Current: 5A or 1A. When the installation location of the instrument is far away from the current transformer or the loop load is large, please choose the secondary current of 1A.
Rated Burden: the measuring instrument is connected to terminals S1 and S2, and the total load of the connected circuit should not exceed the transformer’s rated load/burden.
Accuracy Class: for measurement—class 1.0, 0.5, 0.2, 0.5S, 0.2S; for protection—class 5P10, 5P20, 10P10, 10P20.
We will contact you within 1 working day, please pay attention to the email with the suffix “@jegoelec.com”.
We will contact you within 1 working day, please pay attention to the email with the suffix “@jegoelec.com”.
