www.yuanxing.netsales@yuanxing.net

2 -24

PART NUMBER

ECT3341

ECT

Model

1 20A,30A,40A/3.53VECT3341

5 100A,150A,200A/3.53V

ECT3341-200A/3.53V TRANSIENT CHARACTERISTICS

Name

68.612 62.833 57.904 53.994 50.708 47.762 45.235 44.136 41.530 35.864

67.819 62.209 57.450 53.484 50.425 47.479 45.722 43.853 41.416 35.807

Figure1: Test wave record figure for aperiodic components decay time constant

• For electric power system protection device and fault recording device• Used for regular inspections fault recording device special transformer

Single turn

primary

Wound

primary

Measurem

ent W

ith DC

Im

munity

Without D

C

Imm

unity

Electronic Watthour M

eter For P

rotection Relay

Motor

Protection

MIN

IATUR

E C

T,s S

teady P

rotection Transient P

rotection Passive for Fault Recording

Active for Fault Recording

ECT3341 series miniature current transformer is a kind of transient transformer specially designed for fault recorder devices.It needs an external power supplier in use. It is used for changing transient fault current signal to signal in weak current circuit.Print wiring board mounted & asy-mmetric pins make quick and exact installation possible.Epoxy resin encapsulation structure can be used in severe surrounding.

Current Transformers for Protection RelayCurrent Transformers For Active Fault Recording

FEATURES• Low cost• Need +/-12V power supply• Good transient charateristic

• Exterior Material: PBT Resin UL flame retardant rating 94-V0• Interior Insulation: Epoxy Encapsulated• Isolation Voltage: 2500 Vrms for 1 minute• Dielectric Resistance: 1000M Ohms @ 500 Vdc• Surge Withstand: 5000V（1.2/50μs standard shock wave）• Rated burden：100KOhms• Operating Temperature: -25 to +55ºC,-40 to +85ºC Optional• Frequency: 50 to 2000 Hz• Accuracy Class: as defined in IEC60044-1 Part 1 Current Transformers Class 0.1, 0.2• RoHS compliant

APPLICATIONS

SPECIFICATIONS

PERFORMANCES

Rated Inputcurrent(A)

Rated primary shortcircuitcurrent/Secondary output

Steady characteristics

Transient characteristics

0.1, 0.2 Class for 5-200%Rated Primary Current,0.5 Class for 2-40 TimesRated Primary Current.

Tp=100ms，Excursionfactor cosθ=1.0Ts error≤5%Error peak≤5%

Output Current/VoltageRated Primary Short-Circuit Current

Serial numberProduct sort，4 mean fault recorder

Casing NumberPower Supply Current transformers

+V -VGNDOUT

NC NC

Top view

Phone: +86-533-381-8450Fax: +86-533-381-8724

<1>The aperiodic components decay time constant test Technical requirements：Short-circuit faults simulation. Fundamental component of short circuit current is 5 times of rated current value (5A), aperiodic component is 100% shift. aperiodic components decay time constant is 100ms.Actual measured current transformer decay time constant error shouldbe less than 5%.Short circuit fault record waveform, please see figure1.Below is the first ten period peak value of current transformer secondary output waveform, decay time constant calculated is 95.98ms,standard value is 99.84ms, error by calculation is -3.86%, fulfill requirement of less than 5%.

Standard

MeasuredValue

Value(A)

peak valueFirst

peak valueSecond

peak valueThird

peak valueFourth

peak value Fifth

peak valueSixth

peak valueSeventh

peak valueEighth

peak valueTenth

steady statepeak value

in

Memoir transient wave

SHANDONG YUANXING Electronics Co.,Ltd.NO.39, QIXIN AVENUE, ZHANGDIAN, ZIBO, SHANDONG, CHINA 255095

www.yuanxing.netsales@yuanxing.net

2 -25

OUTLINE DIMENTION

1.000

0.800

0.600

0.400

0.200

0.000

-0.200

-0.400

-0.600

-0.800

-1.00028 48 68 88 108 128 148 168 188 208 228ms

270.028 247.479 270.708 246.742269.065 246.516 269.688 245.722-3.405 -3.405 -3.606 -3.606

Figure2 Test wave record figure for 20 times as large short-circuit current

Unit:mm (inch)

A B C D E F G H I

ECT334128.5

(1.122)20.0

(0.787)29.0

(1.142)4.5

(0.177)10.5

(0.413)5.0

(0.197)17.5

(0.689)4.5

(0.177)0.6x0.6

(0.024x0.024)

Model

YUANXING元星电子

Single turn

primary

Wound

primary

Measurem

ent

With D

C

Imm

unity W

ithout DC

Im

munity

Electronic Watthour M

eter For P

rotection Relay

Motor

Protection

MIN

IATUR

E C

T,s S

teady P

rotection Transient P

rotection Passive for Fault Recording

Active for Fault Recording

Phone: +86-533-381-8450Fax: +86-533-381-8724

Current Transformers For Active Fault Recording

<2>Large short-circuit current recording capability test Technical requirements：Fundamental component of short circuit current is 20times of rated current value (100A), aperiodic component is 100% shift. aperiodic components decay time constant is 100ms. It is applied twice to the same direction. Error tested between first peak value and second peak value of current transformer transient waveform should be less then 5%.Below is actual tested peak value of current transformer output waveform, tested error of instantaneous value by calculation fulfills requirement of less than 5%.

First short troubleName

peak value1Standard value(A)

measured value(A)Error (%)

Second short troublepeak value2 peak value1 peak value2

Memoir transient wave

SHANDONG YUANXING Electronics Co.,Ltd.NO.39, QIXIN AVENUE, ZHANGDIAN, ZIBO, SHANDONG, CHINA 255095