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Closed Loop Residual Zero Sequence Current Transformer

Flexible in application. According to the cable specifications used in the main circuit, there are various core diameters corresponding to it. The main circuit current includes 63A~2000A.
Availability:

At the same time, it meets the requirements of balanced characteristics, and the unbalanced current output is better than 30mA, 10mA, and 5mA. The product adopts high-quality high-conductivity magnetic core and advanced process technology, which can meet the technical requirements of different precisions such as 0.2, 0.5, and 1.0, and has high reliability. This series of products meet the requirements of GB 14287.2-2014 and GB 13955-2005.


Product Features

*   Flexible output mode, socket or lead output;

*   A variety of core hole diameter options, the hole diameter is from φ12mm to φ260mm;

*   Casting with epoxy resin, good stability;

*   Adopt high magnetic permeability nickel steel or nanocrystalline magnetic core, with good linearity and high sensitivity .

*   Excellent balance characteristics, with strong anti-electromagnetic interference ability.


Scope of Application

Suitable for motor protection, electromagnetic relay protection device, microcomputer protection device; electrical

fire monitoring, fire leakage system, low current grounding system.


Electric Performance Parameters

Operating

Temperature

-40℃~+70℃

Relative Humidity

≤90%

Voltage Level

0.4/0.66/0.72kV

Linear Range

5%~120%

Rated Input Current

(AC)

10mA~5A

Working Frequency

45~1250Hz

Rated Output (AC)

0~1V or 0~5mA

Medium Strength:

3000Vac/min

Accuracy Class

0.5、1.0、2.0

Insulation Resistance

>500 M

Ohms/500Vdc

Mechanical

Structure Parameters

Shell Material

PBT/PC Flame Retardant Grade 94-

V0

Output Method

Socket or Shielded Sheathed Wire

Iron Core Material

Nickel Steel or Ultra

Microcrystalline

construction plan

Base installation bolts

are fixed

Sealing and Filling

Epoxy Resin

Environmental

Requirements

Meet RoHS



Typical Value of Main Products



Model NO.

Input current rated Value AC

Rated Continuous Thermal Current

AC


Common Transformation Ratio


Accuracy Class


Secondary Load(Ohms

)

Dimensionsmm

ApertureD

other size


TR21125B


10mA~5A


10A


1000:1

2000:1


0.2,0.5


≤200


25

L-W-H-J-A1-A2

80-22-69.5-68-

5.2-8


TR21126B


10mA~5A


10A


1000:1

2000:1


0.2,0.5


≤500


45

L-W-H-J-A1-A2

120-33-101.5-

98-5.2-8.5


TR21127B


10mA~5A


10A


1000:1

2000:1


0.2,0.5


≤500


55

L-W-H-J-A1-A2

150-35-126-

126-5.2-12


TR2174B


10mA~5A


10A


1000:1

2000:1


0.2,0.5


≤500


35

L-W-H-J-A1-A2

100-30-90-

83.5-5.2-9.5


TR21313B


10mA~5A


10A


1000:1

2000:1


0.2,0.5


≤500


32

L-W-H-J-A1-A2

91-28-70-80-

5.5-7.5


TR21314B


10mA~5A


10A


1000:1

2000:1


0.2,0.5

≤500

45

L-W-H-J-A1-A2

104-28-83-93-

5.5-7.5


TR21315B


10mA~5A


10A


1000:1

2000:1


0.2,0.5

≤500

65

L-W-H-J-A1-A2

126-28-105-

115-5.5-7.5


TR21316B


10mA~5A


10A


1000:1

2000:1


0.2,0.5

≤500

80

L-W-H-J-A1-A2

143-28-122-

132-5.5-7.5


TR21317B


10mA~5A


10A


1000:1

2000:1


0.2,0.5

≤500

105

L-W-H-J-A1-A2

172-28-151-

161-5.5-7.5


TR21117B


10mA~5A


10A


1000:1

2000:1


0.2,0.5

≤500

72

L-W-H-J-A1-A2

175-42-150-

150-6.2-13


Outline Structure Diagram (Unit :mm)                    


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