FIELD: electricity.
SUBSTANCE: electronic current transformer comprises an input measuring current transformer 2 with primary 3, measuring 4 and feedback 5 windings, a pre-amplifier 6, a phase changer 7, a controlled amplifier 8, a power amplifier 9, a current-limiting resistor 10, an output matching transformer 11 with primary 12 and secondary 13 windings. At that in the device there are also a current-setting resistor 14, an operational amplifier 15, a reference amplifier 16, a measuring resistance 17 and a comparison circuit 18.
EFFECT: reduced current and angular error, reduced weight, dimensions and costs of used basic specifications, expanding the range of measured currents, invariability of an electronic current transformer to change in the load resistance, increased temperature and timing stability.
1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| ELECTRONIC CURRENT TRANSFORMER | 2015 |
|
RU2617858C1 |
| METER OF METROLOGICAL CHARACTERISTICS OF CURRENT TRANSFORMER | 2002 |
|
RU2224266C1 |
| INSTRUMENT CURRENT TRANSFORMER | 2002 |
|
RU2224262C1 |
| MEASURING CONVERTER | 2006 |
|
RU2300774C1 |
| INSTRUMENT CONVERTER | 2001 |
|
RU2176088C1 |
| TRANSFORMER BRIDGE FOR REMOTE MEASURING OF COMPLEX IMPEDANCE PARAMETERS | 0 |
|
SU1022061A1 |
| ELECTRONIC ELECTRICITY METER | 2000 |
|
RU2167427C1 |
| METHOD AND DEVICE FOR MEASURING MAGNETIC FIELD (ITS VERSIONS) | 0 |
|
SU958991A1 |
| DIGITAL INSTRUMENT CONVERTER OF FLUID ELECTRIC CONDUCTIVITY | 0 |
|
SU1531027A1 |
| DEVICE FOR MEASURING TEMPERATURE AND TEMPERATURE DIFFERENCE | 0 |
|
SU1029018A1 |
