TR2145CB current transformer 5A/2.5mA 0~5A 0~5mA 1000:1 2000:1 2500:1 small current sensor for instrument and meter high voltage
Product Description
Instrument Current Transformer
Product description
This product is used as an electric energy metering device that requires high precision and small phase error. The input AC current through the core hole of the transformer induces a Ma-level current signal on the secondary side ,which is converted into the required voltage signal by the back-end sampling resistor and accurately transmitted to the electronic circuit based on micro-processing .
Product characteristics
Low price ,easy cost control
High precision ,wide linear range ,excellent consistency
Small size and light weight ,easy for high –density PCB mounting
Various shape structures are available
Application
Apply to monitoring of multi-function instruments, intelligent detection instruments ,electronic watt-hour meters and building control systems .
Product parameters
| Product parameters | ||||
| Electrical performance parameters | Operation temperature | -25℃～+55℃/-40℃~～+85℃ optional | Relative humidity | ≤90%hPa |
| Internal insulation | Epoxy resin | Insulation resistance | ＞500 M Ohms/500Vdc | |
| Medium strength | 3000Vac/min | Withstand impulse voltage | 5000V（1.2/50μsStandard Lightning Wave） | |
| Operation frequency | 50～400Hz | Accuracy class | According to（IEC 61869-2）class 0.1，0.2 and（JBT/10665-2016）0.1，0.2 | |
| Environmental friendly | According to the requirement of RoHS; | |||
| Typical value of products | |||||||
| Type | Rated input current (AC) | Rated output current (AC) | Ratio | Maximum overload times | Secondary load(Ohms) | Accuracy class | Dimensions（mm） |
| TR2145CB | 0～5A | 0～5mA | 1000:1 2000:1 2500:1 | 20 | ≤20 | 0.1，0.2 | L-W-H 15.8-17.3-19 |