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XL Series Active Zero Flux Leakage Current Sensor
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XL Series Active Zero Flux Leakage Current Sensor

TRXL series active zero flux leakage current sensor is a kind of micro-current sensor specially developed for on-line monitoring of the insulation of high-voltage electrical equipment. It selects the material with high starting permeability as the iron core, adopts the unique depth negative feedback technology and multi-layer metal shielding measures, which can compensate the iron core fully automatically and make the iron core work in the ideal zero magnetic flux state. The sensor is capable of accurately detecting industrial frequency currents from 100μA to 700mA. The phase conversion error is no more than 0.01°, with good temperature characteristics and electromagnetic field interference ability, fully meet the complex power plant site interference under the equipment sampling accuracy.
Availability:
  • TRXL

  • TR

Product Overview


It has become the first choice for sensors for online monitoring of high-voltage equipment insulation. For this kind of current sensor, it is required to have high accuracy, good anti-electromagnetic interference capability and long-term stability. The traditional passive sensor cannot guarantee the accuracy and stability of the phase transformation error, and it is difficult to meet the requirements. The micro-current sensor using active zero-flux technology has the above excellent performance, and can accurately measure the leakage current of high-voltage equipment such as transformers, current transformers, voltage transformers, coupling capacitors, and arresters.


Product Features


*   Accurate measurement of μA level current with high measurement accuracy and good linearityty.

*   Multiple shielding, strong anti-interference ability, can work in complex environments.

*   Optional terminal outputs or aerial plug outputs.

*   Special waterproof and anti-corrosion metal casing, epoxy resin sealing, can work outdoors for a long time.

Application                      

*   On-line monitoring of transformer equipment.

*   On-line monitoring of transformer core grounding.

*   On-line monitoring of high-voltage bushing insulation.

*   On-line monitoring of metal-oxide-zinc lightning arrester insulation.

*   On-line monitoring of current and voltage transformers and capacitors.

*   High-voltage charged display.


Electric Performance Parameters

Electrical Symbol

Performance Parameter

Small signal measurement (active)

IN

Rated Input

500mARMS

IP

Measurable Range

0.1mA-1A

VOUT

Rated Output

3.53VRMS

X

Accuracy@IPN

0.05%

εL

Linearity

≤0.05%

Uc

Supply Voltage

±12V

Voff

Offset Voltage

1mV

IC

Max Power Consumption

10mA

f

Operating Frequency

50-400 Hz

TA

Operating Temperature

-40oC… +85oC

TS

Storage Temperature

-40oC…+100oC

Mechanical

Structure Parameters

Shell

Metal Shell

Output Mode

Socket block/waterproof

aerial plug

Metal Core Material

Nanocrystalline/Permalloy

Seal

Flexible Silicone & Epoxy

Magnetic Screen Structure

Carbon Steel/Permalloy

Construction Plan

Base Installation Fixed


Main specification and Drawing

Product Images

Model NO.

Specification


XL-1A 80-42-110(φ26)

TRXLW-1T

10mA/10μA

TRXLW-1T

20mA/20μA

TRXL-1T

5mA/5V

TRXL-1T

10mA/1V

TRXL-1T

700mA/7V

TRXL-1T

1A/5V

TRXL-1T

200mA/5V-1A/5V


XL-1B 80-42-110(φ26)


TRXL-1TW

10mA/1V

TRXL-1TW

0.5(20A)/3.53V

TRXL-1TW

700mA/7V

TRXL-1TW

700mA/7V

TRXL-1TW

20A/20mA

TRXL-1TW

10mA/1V

TRXL-1TW

20A/20mA

TRXL-1TW

700mA/7V

TRXL-1TW

50A/50mA

Note: can be customized according to customer requirements (through hole diameter, external dimensions, parameter transformation ratio)


Outline Installation Drawing


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