2DU1 datasheet(13/19 Pages) ALTECH

13 / 19 page

AltechCorp.®•35RoyalRoad•Flemington,NJ08822-6000•Phone(908)806-9400•FAX(908)806-9490•www.altechcorp.com

Rated

Current BC

(Amp) (Ohms) (Ohms) (Ohms) (Ohms) (Ohms) (Ohms)

0.3

— 16.8620 16.8620 14.52000 16.8620 31.5060

0.5

—

6.8540 6.0009 5.92000 6.8540 10.2460

0.75/0.8 —

3.0540 3.0540 2.70000 3.0540 5.3920

1.0

—

1.7000 1.7560 1.48000 1.7560 2.6910

1.6

—

0.5870 0.5870 0.57400 0.5870 0.9440

2.0

—

0.4190 0.4190 0.40500 0.4190 0.8900

2.5

—

0.2950 0.2950 0.26900 0.2950 0.4290

3.0

—

0.2020 0.2020 0.18600 0.2020 0.3460

3.5

—

0.1390 0.1390 0.13900 0.1390 0.1790

4.0

—

0.1090 0.1090 0.10600 0.1090 0.1620

5.0

—

0.0654 0.0654 0.05900 0.0654 0.1050

6.0

0.0528 0.0528 0.0491 0.04600 0.0491 0.0823

8.0

—

0.0278 0.0240 0.03040 0.0333 0.0371

0.0216 0.0216 0.0187 0.02020 0.0211 0.0278

12/12.5 ——

—

0.00724 0.0084 0.0151

0.0113 0.0084 0.0085 0.00724 0.0084 0.0151

15/16 0.0085 0.0085 0.0076 0.00731 0.0076 0.0114

0.0067 0.0067 0.0064 0.00582 0.0064 0.0075

0.0050 0.0050 0.0041 0.00411 0.0046 0.0050

30/32 0.0032 0.0032 0.0027 0.00272 0.0030 0.0032

0.0025 0.0025 0.0022 0.00212 0.0022 0.0022

0.0019 0.0019 0.0018 0.00184 0.0019 0.00195

60/63 0.0018 0.0018 0.0017 0.00172 0.00179 —

TripCharacteristic

V-EAINTERNALRESISTANCE

Resistanceslistedare“hot”values,as

opposedtocoldstartvalues.Operating

voltagedropacrosstheV-EAandpower

lossperpolecanbeapproximatedwith

basicformulas:

VDROP =IOPERATING xRTABLE

PLOSSP/P=I2OPERATING xRTABLE

Voltagedropsshouldbereviewedwhen

V-EAswithhighinternalresistanceare

used(e.g.,loadvoltageminimums).

Powerlossshouldbereviewedwhen

V-EAswithhighratedcurrentsareused

(e.g.,enclosureheating).

ThelistedV-EAinternalresistance

valuesshouldnotbeusedin

calculationsofavailableshort-circuit

currentdownstreamoftheV-EA.The

dynamicimpedanceoftheV-EAunder

short-circuitconditionscanvary

significantlyfrominternalresistance

valuesinnormaloperation.

FrequencyEffectsonMagneticTripCurves

Trip TripZone TripZone TripZone TripZone TripZone

Curve At

162/3-60Hz 100Hz 200Hz 400Hz

(xRC) (xRC) (xRC)

(xRC)

2-3

2.2-3.3 2.4-3.6 2.8-4.2 3.0- 4.5

3-5

3.3-5.5 3.6-6.0 4.2-7.0 4.5- 7.5

C 5-10 5.5-11.0 6.0-12 7.0-14.0 7.5-15.0

G 8-10 8.8-11.0 9.6-12.0 11.2-14.0 12.0-15.0

D 10-16 11.0-17.6 12.0-19.2 14.0-22.4 15.0-24.0

E 14-18 15.4-19.8 16.8-21.6 19.6-25.2 21.0-27.0

LINE CURRENT FREQUENCY EFFECTS ON TRIP CURVES

Thethermaltripisnotaffectedbythefrequencyoftheline

current.Themagnetictripiswithinthetripzoneofthe

characteristiccurveforfrequenciesfrom162/3to60Hz. At

lowerandhigherfrequencies,themagnetictripwillbe

delayedlongerthanindicatedbythecharacteristiccurve,

roughlyasfollows:

At100Hz: Mag.TripCurrent=1.1xcurvecurrent

At200Hz: Mag.TripCurrent=1.2xcurvecurrent

At400Hz: Mag.TripCurrent=1.4xcurvecurrent

AtDC: Mag.TripCurrent=1.5xcurvecurrent

Forexample,at162/3-60Hzthemagnetictripzonefor

the“G”characteristicis8to10timestheratedcurrentof

thespecificV-EA(i.e.,holdforatleast100msat8xRC,

tripinlessthan100msat10xRC). Witha400Hzcurrent,

amagnetictripat10xRCwouldbegreatlydelayed

(thermalwouldlikelytripfirst),asthemagnetictripzoneis

now11.2to14xRC. Ifaquickermagnetictripisrequired

with400Hz,the“B”or“C”characteristicshouldbe

considered.

MECHANICAL ENDURANCE RATINGS (ON/OFF OPERATIONS)

Application

2x(1.15xRC) 2xRC

RC NoLoad Total

ACGeneralUse

—

6000

—

4000

10000

ACMotorStartingAcrosstheLine

1000

—

5000

4000

10000

ACIncandescentLamps(Tungsten)

——

6000

4000

10000

ACElectricalDischargeLamps(Ballast)

—

6000

—

4000

10000

ACResistance

—

6000

—

4000

10000

Manufacturersselfcertification

20000ON/OFFoperationswithnoload

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