DENT Instruments RoCoil TCA-5 Manual
DENT Instruments
ZƃŽŝůd-5™
ϱŵƉdƌĂŶƐĐŽŶĚƵĐƚĂŶĐĞŵƉůŝĨŝĞƌ
Operator’s Guide
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ZƃŽŝůd-5 dD
February 8, 2016 ŝŝ DENT Instruments
KƉĞƌĂƚŽƌƐ'ƵŝĚĞZƃŽŝůd-5™ © 2016 Ed/ŶƐƚƌƵŵĞŶƚƐ/ŶĐůůƌŝŐŚƚƐƌĞƐĞƌǀĞĚ
dŚŝƐŵĂŶƵĂůŵĂLJŶŽƚďĞƌĞƉƌŽĚƵĐĞĚŽƌĚŝƐƚƌŝďƵƚĞĚǁŝƚŚŽƵƚǁƌŝƚƚĞŶƉĞƌŵŝƐƐŝŽŶĨƌŽŵEd/ŶƐƚƌƵŵĞŶƚƐ
Trademarks
ZƃŽŝůΡĂŶĚZƃŽŝůdͲϱΡĂƌĞƚƌĂĚĞŵĂƌŬƐŽĨEd/ŶƐƚƌƵŵĞŶƚƐ/ŶĐ
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INTRODUCTION 4
Product Description ................................................................................................................................ 4
Specifications .......................................................................................................................................... 5
Safety Summary...................................................................................................................................... 6
FIELD INSTALLATION 8
Powering the TCA-5 ................................................................................................................................ 9
ŽŶŶĞĐƚŝŶŐZƃŽŝůƵƌƌĞŶƚ^ĞŶƐŽƌƐ ...................................................................................................... 11
Connecting Current Outputs ................................................................................................................ 12
Output Impedance/Burden............................................................................................................ 12
THEORY OF OPERATION 14
/ŶƉƵƚ^ŝŐŶĂů ........................................................................................................................................... 14
ZĂŶŐĞ^ĞůĞĐƚŝŽŶ .................................................................................................................................... 15
Integration ............................................................................................................................................ 16
&ƌĞƋƵĞŶĐLJ^ĞůĞĐƚŝŽŶ ............................................................................................................................. 16
Performance ......................................................................................................................................... 16
FREQUENTLY ASKED QUESTIONS 17
Table of Contents
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Chapter
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1
Product Description
dŚĞ ZƃŽŝů d-ϱΡ ŝƐ Ă ƚŚƌĞĞ ĐŚĂŶŶĞů ŝŶƚĞŐƌĂƚŝŶŐ ƚƌĂŶƐĐŽŶĚƵĐƚĂŶĐĞ ĂŵƉůŝĨŝĞƌ ƚŚĂƚ ƚƌĂŶƐůĂƚĞƐ ƚŚĞ
ĞůĞĐƚƌŝĐĂů ŽƵƚƉƵƚ ƐŝŐŶĂů ĨƌŽŵ Ă ĨůĞdžŝďůĞ ZƃŽŝůΡ ĐƵƌƌĞŶƚ ƐĞŶƐŽƌƚŽĂϱ-ĂŵƉ ĐƵƌƌĞŶƚ ĞŵƵůĂƚŝŶŐ Ă
ƚƌĂĚŝƚŝŽŶĂůϱƐĞĐŽŶĚĂƌLJĐƵƌƌĞŶƚƐĞŶƐŝŶŐƚƌĂŶƐĨŽƌŵĞƌdŚŝƐĐŽŵďŝŶĂƚŝŽŶĞŶĂďůĞƐƚŚĞĨůĞdžŝďŝůŝƚLJĂŶĚĞĂƐĞ
ŽĨŝŶƐƚĂůůĂƚŝŽŶŽĨƚŚĞZƃŽŝůƚŽďĞĞdžƚĞŶĚĞĚƚŽĂƉƉůŝĐĂƚŝŽŶƐŚĂǀŝŶŐƉŽǁĞƌŵĞƚĞƌƐŽƌƉĂŶĞůƐƚŚĂƚĐĂŶŶŽƚ
ƉƌŽĐĞƐƐ Ă ZƃŽŝů ƐŝŐŶĂů ĚŝƌĞĐƚůLJ dŚĞ ZƃŽŝů d-ϱŝƐĂ/EƌĂŝů- Žƌ ƉĂŶĞů-ŵŽƵŶƚĞĚ ĚĞǀŝĐĞ ƌĞƋƵŝƌŝŶŐ ĂŶ
ĞdžƚĞƌŶĂů ϰϴ-ǀŽůƚƉŽǁĞƌƐƵƉƉůLJ;ĂǀĂŝůĂďůĞĂƐĂŶŽƉƚŝŽŶͿdŚĞZƃŽŝůd-ϱ ŚĂƐ ĨŽƵƌ ƐĞůĞĐƚĂďůĞ ĐƵƌƌĞŶƚ
ƌĂŶŐĞƐϱϬϬϭŬϮϱŬĂŶĚϱŬĂŵƉƐĂŶĚŝƐĂĐĐƵƌĂƚĞĨŽƌďŽƚŚϱϬĂŶĚϲϬ,njƐLJƐƚĞŵƐdŚĞZƃŽŝůd-5 has
ďĞĞŶĨĂĐƚŽƌLJĐĂůŝďƌĂƚĞĚĨŽƌEdZƃŽŝůĐƵƌƌĞŶƚƐĞŶƐŽƌƐǁŝƚŚĂŶŽƵƚƉƵƚŽĨϭϯϭϬŵsƉĞƌƚŚŽƵƐĂŶĚĂŵƉƐ
ĂƚϲϬ,nj
NOTE: The RƃŽŝůd-ϱŚĂƐďĞĞŶƚĞƐƚĞĚĨŽƌĞůĞĐƚƌŽŵĂŐŶĞƚŝĐĐŽŵƉĂƚŝďŝůŝƚLJ;DͿĂƐĂŶĂƐƐĞŵďůLJǁŚŝĐŚ
ŝŶĐůƵĚĞƐĂĚŝƐĐƌĞƚĞĨŝůƚĞƌďĞƚǁĞĞŶƚŚĞϰϴǀŽůƚƉŽǁĞƌƐƵƉƉůy ĂŶĚƚŚĞd-ϱZĞŵŽǀĂůŽĨƚŚŝƐĨŝůƚĞƌŵĂLJ
ƌĞƐƵůƚŝŶƐƉƵƌŝŽƵƐƌĞƐƵůƚƐŽƌƐĂƚƵƌĂƚŝŽŶŽĨƚŚĞŚŝŐŚŐĂŝŶŝŶƚĞƌŶĂůĂŵƉůŝĨŝĞƌ
Figure 1-1: Anatomy of the 5-Amp RƃCoil TCA
Introduction
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DENT Instruments 5 February 8, 2016
KEY SPECIFICATIONS
/ŶƉƵƚDĞĂƐƵƌĞŵĞŶƚsŽůƚĂŐĞ 0 – ϲϱϱŵs;ZD^Ϳ
ZƃŽŝůƵƌƌĞŶƚZĂŶŐĞ Ϭϱ– ϱϬϬϬĂŵƉƐ;ϴϬĚ^ŝŐŶĂůZĂŶŐĞͿ
KƵƚƉƵƚƵƌƌĞŶƚ 0 – ϱϬϬĂŵƉƐ;ZD^ͿΎ
ZƃŽŝů^ĞŶƐŝŶŐZĂŶŐĞƐ ϱϬϬϭ<Ϯϱ<ϱ<ŵƉƐ;hƐĞƌ-ƐĞůĞĐƚĂďůĞͿ
DĂdžŝŵƵŵƵƌĚĞŶ ϭ2ϱsƉĞƌĐŚĂŶŶĞů
DĂdžŝŵƵŵKƵƚƉƵƚ/ŵƉĞĚĂŶĐĞ 50 m-ŽŚŵƐ
DĞĂƐƵƌĞŵĞŶƚŚĂŶŶĞůƐ ϯ;ϯ-ƉŚĂƐĞŽƌƐŝŶŐůĞƉŚĂƐĞͿ
&ƌĞƋƵĞŶĐLJ ϱϬϲϬ,nj^ĞůĞĐƚ
ĐĐƵƌĂĐLJ ϭйΎΎ
ŚĂŶŶĞůƌŽƐƐdĂůŬ фϲϬĚ
Es/ZKEDEd>
>ŽĐĂƚŝŽŶ /ŶĚŽŽƌƵƐĞŽŶůLJ
ůƚŝƚƵĚĞ hƉƚŽϮϬϬϬŵ
KƉĞƌĂƚŝŶŐdĞŵƉĞƌĂƚƵƌĞ -20° ;-4° &ͿƚŽ40° ;ϭ04° &Ϳ
ZĞůĂƚŝǀĞŚƵŵŝĚŝƚLJ ϱйƚŽϵϱйŶŽŶ-ĐŽŶĚĞŶƐŝŶŐ
WKtZZYh/ZDEd^
d^ƵƉƉůLJsŽůƚĂŐĞ ϰϴsн- ϭϬйϯϬtĂƚƚƐ
d^ƵƉƉůLJƵƌƌĞŶƚ ϬϲĂŵƉƐΛϰϴs
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February 8, 2016 6 DENT Instruments
KEY SPECIFICATIONS
DIMENSIONS/MOUNTING
tŝĚƚŚĂƐĞhŶŝƚ/ƐƐĞŵďůĞĚ ϭϱϳĐŵ;ϲϮͿϮϱϬĐŵ;ϵϴͿ
,ĞŝŐŚƚĂƐĞhŶŝƚƐƐĞŵďůĞĚ ϵϬĐŵ;ϯϱͿϭϮϲĐŵ;ϱϬͿ
/ŶƉƵƚtŝƌĞŽŶŶĞĐƚŝŽŶ 18 – Ϯϴt'
KƵƚƉƵƚtŝƌĞŽŶŶĞĐƚŝŽŶ 12 – ϭϴt';ůĞŶŐƚŚĚĞƉĞŶĚĞŶƚͿ
ACCESSORIES
WŽǁĞƌ^ƵƉƉůLJ >ŽǁsŽůƚĂŐĞϭϮϬϮϰϬs 40W
,ŝŐŚsŽůƚĂŐĞ400/500 s 120W
DŽƵŶƚŝŶŐZĂŝů d^ϯϱϳ/EZĂŝů
Table 1-1: Specifications
Ύ dŚĞ ZƃŽŝů d-ϱ ŝƐ ůŝŵŝƚĞĚ ƚŽ ϭϵ ĂŵƉƐ ŽĨ ƉĞĂŬ ŝŶƐƚĂŶƚĂŶĞŽƵƐ ĐƵƌƌĞŶƚ dŚĞ ϭϵ ĂŵƉůŝŵŝƚŝƐƌĞĂĐŚĞĚĂƚϲϳĂŵƉƐ;ZD^ͿǁŚĞŶ
ŵĞĂƐƵƌŝŶŐϯƉŚĂƐĞůŽĂĚƐďƵƚŝƐƌĞĚƵĐĞĚƚŽϰϱĂŵƉƐ;ZD^ͿǁŚĞŶŵĞĂƐƵƌŝŶŐƚŚƌĞĞĐƵƌƌĞŶƚƐŽŶƚŚĞƐĂŵĞƉŚĂƐĞ NOTE: KƉĞƌĂƚŝŶŐ
ǁŝƚŚĂŶŽƵƚƉƵƚĐŚĂŶŶĞůŽǀĞƌϱĂŵƉƐZD^ĐĂŶĐĂƵƐĞƚŚĞZƃŽŝůd-ϱƚŽŽǀĞƌŚĞĂƚĂŶĚďĞĐŽŵĞĚĂŵĂŐĞĚ
ΎΎ ůůĂĐĐƵƌĂĐŝĞƐƐƉĞĐŝĨŝĞĚĂƚϮϬΣ;н- ϮΣͿǁŝƚŚZƃŽŝůĐĞŶƚĞƌĞĚŽŶĐŽŶĚƵĐƚŽƌdLJƉŝĐĂůĂĐĐƵƌĂĐLJǁŝƚŚZƃŽŝůdƐфϭй
TIP: hƐĞ Ă ƚƌƵĞ ZD^ sD ƚŽ ŵĞĂƐƵƌĞ ƚŚĞ ǀŽůƚĂŐĞ ĂĐƌŽƐƐ ƚŚĞ ŽƵƚƉƵƚ ƚĞƌŵŝŶĂůƐ ŽĨ ƚŚĞ
ZƃŽŝů d-ϱǀŽůƚĂŐĞĂďŽǀĞ250 ŵsZD^ŝŶĚŝĐĂƚĞƐƚŚĂƚƚŚĞƐŝŐŶĂůŵĂLJďĞĐůŝƉƉĞĚ
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DENT Instruments ϳ February 8, 2016
Safety Summary
dŚŝƐŐĞŶĞƌĂůƐĂĨĞƚLJŝŶĨŽƌŵĂƚŝŽŶŝƐƚŽďĞƵƐĞĚďLJďŽƚŚ
ŽƉĞƌĂƚŽƌĂŶĚƐĞƌǀŝĐŝŶŐƉĞƌƐŽŶŶĞůEd/ŶƐƚƌƵŵĞŶƚƐ/ŶĐ
ĂƐƐƵŵĞƐŶŽůŝĂďŝůŝƚLJĨŽƌƵƐĞƌƐĨĂŝůƵƌĞƚŽĐŽŵƉůLJǁŝƚŚƚŚĞƐĞ
ƐĂĨĞƚLJŐƵŝĚĞůŝŶĞƐ ϰZ,ϴ
ϭϴϲϴϮϳ
ŽŶĨŽƌŵƐƚŽh>^dϲϭϬϭϬ-1
ŽŶĨŽƌŵƐƚŽE^^dϮϮϮEŽϲϭϬϭϬ
CAUTION: Service panel voltages may contain life-threatening voltages. QUALIFIED PERSONNEL MUST install CTs or power leads using
methods consistent with NEC and local codes.
SYMBOLS ON EQUIPMENT
ĞŶŽƚĞƐĐĂƵƚŝŽŶ^ĞĞŵĂŶƵĂůĨŽƌĂĚĞƐĐƌŝƉƚŝŽŶŽĨƚŚĞŵĞĂŶŝŶŐƐ
tŚĞŶĐŽŶŶĞĐƚŝŶŐƚŚĞZƃŽŝůd-ϱΡƚŽĂŶůŽĂĚĨŽůůŽǁƚŚĞƐĞƐƚĞƉƐƚŽƉƌĞǀĞŶƚĂƐŚŽĐŬŚĂnjĂƌĚ
ϭ /ĨƉŽƐƐŝďůĞĚĞ-ĞŶĞƌŐŝnjĞƚŚĞĐŝƌĐƵŝƚƚŽďĞŵŽŶŝƚŽƌĞĚ
Ϯ ŽŶŶĞĐƚƚŚĞdƐƚŽƚŚĞƉŚĂƐĞƐďĞŝŶŐŵŽŶŝƚŽƌĞĚ
ϯ hƐĞƉƌŽƉĞƌƐĂĨĞƚLJĞƋƵŝƉŵĞŶƚ;ŐůŽǀĞƐŵĂƐŬĂŶĚƉƌŽƚĞĐƚŝǀĞĐůŽƚŚŝŶŐͿĂƐƌĞƋƵŝƌĞĚ
DĞĂƐƵƌĞŵĞŶƚŝŶƉƵƚƚĞƌŵŝŶĂůƐŽĨƚŚĞĚĞǀŝĐĞƐŚĂůůďĞĐŽŶŶĞĐƚĞĚƚŽ>ŝƐƚĞĚŽƌĞƌƚŝĨŝĞĚRŽŐŽǁƐŬŝ ĐŽŝůƐǁŝƚŚϭϯϭŵsϭϬϬϬŽƵƚƉƵƚ
ƌĂƚĞĚĨŽƌƚŚĞǀŽůƚĂŐĞĂŶĚĐĂƚĞŐŽƌLJŽĨƚŚĞŝŶƐƚĂůůĂƚŝŽŶĂŶĚƚŚĞdŝƐĞǀĂůƵĂƚĞĚĨŽƌŽƵďůĞZĞŝŶĨŽƌĐĞĚ/ŶƐƵůĂƚŝŽŶ
ZŝƐŬŽĨĞůĞĐƚƌŝĐĂůƐŚŽĐŬ>ŝĨĞ-ƚŚƌĞĂƚĞŶŝŶŐǀŽůƚĂŐĞƐŵĂLJďĞƉƌĞƐĞŶƚůůǁŽƌŬƐŚŽƵůĚďĞƉĞƌĨŽƌŵĞĚďLJĂƋƵĂůŝĨŝĞĚĞůĞĐƚƌŝĐŝĂŶƵƐŝŶŐ
ƉƌŽƉĞƌƐĂĨĞƚLJĞƋƵŝƉŵĞŶƚ
ŝƐƉŽƐĞŽĨƉƌŽƉĞƌůLJ
FCC COMPLIANCE
dŚŝƐĚĞǀŝĐĞŚĂƐďĞĞŶƚĞƐƚĞĚĂŶĚĨŽƵŶĚƚŽĐŽŵƉůLJǁŝƚŚƚŚĞůŝŵŝƚƐĨŽƌĂůĂƐƐĚŝŐŝƚĂůĚĞǀŝĐĞƉƵƌƐƵĂŶƚƚŽƉĂƌƚϭϱŽĨƚŚĞ&ZƵůĞƐ
dŚĞƐĞ ůŝŵŝƚƐ ĂƌĞĚĞƐŝŐŶĞĚƚŽ ƉƌŽǀŝĚĞƌĞĂƐŽŶĂďůĞƉƌŽƚĞĐƚŝŽŶĂŐĂŝŶƐƚ ŚĂƌŵĨƵů ŝŶƚĞƌĨĞƌĞŶĐĞ ǁŚĞŶ ƚŚĞ ĞƋƵŝƉŵĞŶƚ ŝƐ ŽƉĞƌĂƚĞĚ ŝŶ Ă
ĐŽŵŵĞƌĐŝĂůĞŶǀŝƌŽŶŵĞŶƚdŚŝƐĞƋƵŝƉŵĞŶƚŐĞŶĞƌĂƚĞƐƵƐĞƐĂŶĚĐĂŶƌĂĚŝĂƚĞƌĂĚŝŽĨƌĞƋƵĞŶĐLJĞŶĞƌŐLJĂŶĚŝĨŶŽƚŝŶƐƚĂůůĞĚĂŶĚƵƐĞĚ
ŝŶ ĂĐĐŽƌĚĂŶĐĞ ǁŝƚŚ ƚŚĞ ŝŶƐƚƌƵĐƚŝŽŶ ŵĂŶƵĂů ŵĂLJ ĐĂƵƐĞ ŚĂƌŵĨƵů ŝŶƚĞƌĨĞƌĞŶĐĞ ƚŽ ƌĂĚŝŽ ĐŽŵŵƵŶŝĐĂƚŝŽŶƐ KƉĞƌĂƚŝŽŶ ŽĨ ƚŚŝƐ
ĞƋƵŝƉŵĞŶƚŝŶĂƌĞƐŝĚĞŶƚŝĂůĂƌĞĂŝƐůŝŬĞůLJƚŽĐĂƵƐĞŚĂƌŵĨƵůŝŶƚĞƌĨĞƌĞŶĐĞ ŝŶ ǁŚŝĐŚ ĐĂƐĞ ƚŚĞ ƵƐĞƌ ǁŝůů ďĞ ƌĞƋƵŝƌĞĚ ƚŽ ĐŽƌƌĞĐƚ ƚŚe
ŝŶƚĞƌĨĞƌĞŶĐĞĂƚƵƐĞƌƐŽǁŶĞdžƉĞŶƐĞ
KƉĞƌĂƚŝŽŶŝƐƐƵďũĞĐƚƚŽƚŚĞĨŽůůŽǁŝŶŐƚǁŽĐŽŶĚŝƚŝŽŶƐ;ϭͿdŚŝƐĚĞǀŝĐĞŵĂLJŶŽƚĐĂƵƐĞŚĂƌŵĨƵůŝŶƚĞƌĨĞƌĞŶĐĞĂŶĚ;ϮͿƚŚŝƐĚĞǀŝĐĞŵƵƐƚ
ĂĐĐĞƉƚĂŶLJŝŶƚĞƌĨĞƌĞŶĐĞƌĞĐĞŝǀĞĚŝŶĐůƵĚŝŶŐŝŶƚĞƌĨĞƌĞŶĐĞƚŚĂƚŵĂLJĐĂƵƐĞƵŶĚĞƐŝƌĞĚŽƉĞƌĂƚŝŽŶ
MAINTENANCE
dŚĞƌĞŝƐŶŽƌĞƋƵŝƌĞĚŵĂŝŶƚĞŶĂŶĐĞǁŝƚŚƚŚĞd-ϱďŝĚĞďLJƚŚĞĨŽůůŽǁŝŶŐŝƚĞŵƐ
ůĞĂŶŝŶŐEŽĐůĞĂŶŝŶŐĂŐĞŶƚƐŝŶĐůƵĚŝŶŐǁĂƚĞƌƐŚĂůůďĞƵƐĞĚŽŶƚŚĞd-ϱ
WARNING! hƐĞŽĨƚŚŝƐĚĞǀŝĐĞŝŶĂŵĂŶŶĞƌĨŽƌǁŚŝĐŚŝƚŝƐŶŽƚŝŶƚĞŶĚĞĚŵĂLJŝŵƉĂŝƌŝƚƐŵĞĂŶƐŽĨƉƌŽƚĞĐƚŝŽŶ
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Chapter
February 8, 2016 8 DENT Instruments
2
Figure 2-1: Recommended Installation
dŚĞ ZƃŽŝů d-ϱ ŝƐ ŝŶƚĞŶĚĞĚ ƚŽ ďĞ ŵŽƵŶƚĞĚ ǁŝƚŚ ƚŚĞ ŽƵƚƉƵƚ ƚĞƌŵŝŶĂů ĨĂĐŝŶŐ ƵƉdŚĞZƃŽŝůd-5
ŐĞŶĞƌĂƚĞƐƵƉƚŽϮϬǁĂƚƚƐŽĨŝŶƚĞƌŶĂůŚĞĂƚĂŶĚƌĞůŝĞƐŽŶŶĂƚƵƌĂůĐŽŶǀĞĐƚŝŽŶƚŽĐŽŽůŝƚƐĞůĨdŚĞƵŶŝƚŵƵƐƚďĞ
ŵŽƵŶƚĞĚ ŝŶƐŝĚĞ ĂŶ ĞůĞĐƚƌŝĐĂů ĞŶĐůŽƐƵƌĞ ŝŶ ŽƌĚĞƌ ƚŽ ŵĞĞƚ h> ƌĞƋƵŝƌĞŵĞŶƚƐ dŚĞ ƵŶŝƚ ŵƵƐƚ ŶŽƚ ďĞ
ŵŽƵŶƚĞĚŝŶĂƉŽƐŝƚŝŽŶƚŚĂƚǁŝůůŝŶƚĞƌĨĞƌĞǁŝƚŚƚŚĞŽƉĞƌĂƚŝŶŐŽĨƚŚĞĚŝƐĐŽŶŶĞĐƚ
dŚƌĞĞZƃŽŝů ĐƵƌƌĞŶƚƐĞŶƐŽƌƐǁŝůůƚLJƉŝĐĂůůLJďĞŝŶƐƚĂůůĞĚŝŶƐŝĚĞƚŚĞƐĞƌǀŝĐĞƉĂŶĞůĂƚƚŚĞĨĞĞĚĞƌŽƌĂƌŽƵŶĚ
ƚŚĞďƌĂŶĐŚĐŝƌĐƵŝƚŽĨŝŶƚĞƌĞƐƚĞƐƚƉƌĂĐƚŝĐĞŝƐƚŽƐĞƉĂƌĂƚĞƚŚĞǀŽůƚĂŐĞ;ƵƐĞĚƚŽƉŽǁĞƌƚŚĞd-ϱĂŶĚ
ƉŽǁĞƌ ŵĞƚĞƌͿ ĨƌŽŵ ƚŚĞ ZƃŽŝů ƐŝŐŶĂů ĐŽŶĚƵĐƚŽƌƐ ďLJ ƌƵŶŶŝŶŐ ƚŚĞŵ ŝŶ ƐĞƉĂƌĂƚĞ ĐŽŶĚƵŝƚƐ ;ĂƐ ƐŚŽǁŶ ŝŶ
&ŝŐƵƌĞϮ-ϭͿdŚĞZƃŽŝůƐŝŐŶĂůƐŚŝĞůĚǁŝƌĞƐƐŚŽƵůĚďĞƚĞƌŵŝŶĂƚĞĚĂƚƚŚĞZƃŽŝůd-ϱĞŶĚŽŶůLJ
Field Installation
Some power meters have 5A inputs which may
have the option of a shorting bar that connects
the negative inputs together. The inputs MUST
NOT connect to each other.
The 3 outputs of the TCA-5 must be separated
from each other and the negative output wires
must not be tied to each other, otherwise
spurious results or saturation of the high gain
internal amplifier may occur.
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DENT Instruments 9 February 8, 2016
Powering the TCA-5
dŚĞ d-ϱ ŽƉĞƌĂƚĞƐ ĨƌŽŵ ϰϴ ǀŽůƚƐ н- ϭϬй ĂŶĚ ŚĂƐ Ă ĨƵůů
ƉŽǁĞƌĐŽŶƐƵŵƉƚŝŽŶŽĨϯϬǁĂƚƚƐdŚĞ ĐŽŶŶĞĐƚŝŽŶƐĂƌĞŵĂĚĞ
ŝŶƚŚĞůŽǁĞƌƌŝŐŚƚŚĂŶĚĐŽƌŶĞƌŽĨƚŚĞƵŶŝƚ;ŝŶƐĞƚŝŵĂŐĞͿdŚĞ
ĐŽŶŶĞĐƚŝŽŶŝƐƉŽůĂƌŝƚLJƐĞŶƐŝƚŝǀĞĂŶĚǁŝůůŽŶůLJƉŽǁĞƌƵƉŝĨĂƉƉůŝĞĚ
ǁŝƚŚ ƚŚĞ ĐŽƌƌĞĐƚ ƉŽůĂƌŝƚLJ ĂĐŬǁĂƌĚƐ ƉŽůĂƌŝƚLJ ǁŝůů ŶŽƚ ĚĂŵĂŐĞ
ƚŚĞƵŶŝƚďƵƚŝƚǁŝůůŶŽƚƚƵƌŶŽŶ
Ed /ŶƐƚƌƵŵĞŶƚƐ ŽĨĨĞƌƐ ƚǁŽ /E ƌĂŝů-ŵŽƵŶƚĞĚƉŽǁĞƌ
ƐƵƉƉůŝĞƐ ĨŽƌ ůŝŶĞ ƉŽǁĞƌŝŶŐ ,ŝŐŚ ǀŽůƚĂŐĞ ;ϰ00 – ϱϬϬ sͿ ĂŶĚ
>Žǁ ǀŽůƚĂŐĞ ;ϭ20 – ϮϰϬ sͿ dŚĞ,ŝŐŚsŽůƚĂŐĞŵŽĚĞůŝƐ
ƐƵŐŐĞƐƚĞĚ ĨŽƌ ϰϴϬs ƚŚƌĞĞƉŚĂƐĞ ƉŽǁĞƌƐLJƐƚĞŵƐ ĂĐƌŽƐƐůŝŶĞ-ƚŽ-
ůŝŶĞ ĂŶĚ ƚŚĞ >Žǁ sŽůƚĂŐĞ ŵŽĚĞů ŝƐ ƐƵŐŐĞƐƚĞĚ ĨŽƌ ƐŝŶŐůĞ ƉŚĂƐĞ
ƌĞƐŝĚĞŶƚŝĂůĂŶĚ 208V ϯ-ƉŚĂƐĞ systems /ŶďŽƚŚĐĂƐĞƐƚŚĞ
ƉŽǁĞƌ ƐƵƉƉůLJ ŝŶƉƵƚ ŝƐ ĐŽŶŶĞĐƚĞĚ ďĞƚǁĞĞŶ ƚǁŽ ƉŚĂƐĞƐ ŽĨ
ŝŶĐŽŵŝŶŐǀŽůƚĂŐĞEd /ŶƐƚƌƵŵĞŶƚƐƌĞĐŽŵŵĞŶĚƐƉŽǁĞƌŝŶŐƚŚĞ
ƉŽǁĞƌƐƵƉƉůLJƚŚƌŽƵŐŚĂĚĞĚŝĐĂƚĞĚďƌĞĂŬĞƌƚŽĂǀŽŝĚƚŚĞ
ƵƐĞŽĨƚĂƉƌƵůĞƐǁŚĞŶĞǀĞƌƐƉĂĐĞĂůůŽǁƐ;ĂƐƐŚŽǁŶŝŶ&ŝŐƵƌĞϮ-
ϭͿ /Ĩ ƚŚĞ d-ϱ ŝƐ ƉŽǁĞƌĞĚ ĨƌŽŵ ĂŶ ĂƵdžŝůŝĂƌLJ ĐŽŶƚƌŽů
ƚƌĂŶƐĨŽƌŵĞƌ ƌĂƚŚĞƌ ƚŚĂŶ ĚŝƌĞĐƚůLJ ĨƌŽŵ ůŝŶĞ ƉŽǁĞƌ ĞŶƐƵƌĞ ƚŚĂƚ
ƚŚĞƚƌĂŶƐĨŽƌŵĞƌŚĂƐϯϬsŽĨĂǀĂŝůĂďůĞĐĂƉĂĐŝƚLJ
NOTE: dŚĞh>ůŝƐƚŝŶŐŝƐǀĂůŝĚŽŶůLJŝĨƉŽǁĞƌƐƵƉƉůŝĞƐĂƉƉƌŽǀĞĚĨŽƌ
Ed/ŶƐƚƌƵŵĞŶƚƐƉƌŽĚƵĐƚƐ are ƵƐĞĚ
Figure 2-2: DC Connections
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tŚĞƌĞĞŶĐůŽƐƵƌĞƐĂƌĞƌĞƋƵŝƌĞĚƚŽƉƌŽƚĞĐƚƚŚĞZƃŽŝůd-5
ĨƌŽŵ ĞdžƉŽƐƵƌĞ ƚŽ ƚŚĞ ůŽĐĂů ĞŶǀŝƌŽŶŵĞŶƚ ƚŚĞ ĨŽůůŽǁŝŶŐ ŐƌĂƉŚ
;ĐŽƵƌƚĞƐLJŽĨ,ŽĨĨŵĂŶŶĐůŽƐƵƌĞƐͿƉƌŽǀŝĚĞƐĂŶŝŶĚŝĐĂƚŝŽŶŽĨ
ƚŚĞƐŵĂůůĞƐƚ ĂůůŽǁĂďůĞĞŶĐůŽƐƵƌĞƐŝnjĞ dŚĞŝŶƚĞƌŶĂůĞŶĐůŽƐƵƌĞ
ƚĞŵƉĞƌĂƚƵƌĞ ĐĂŶŶŽƚďĞĂůůŽǁĞĚƚŽĞdžĐĞĞĚϰ0° ;ϭϬϰ° &ͿŝĨĨƵůů
ĐƵƌƌĞŶƚ ŝƐ ĚĞŵĂŶĚĞĚ ĨƌŽŵ ƚŚĞ ZƃŽŝů d-5 Ŷ ĞŶĐůŽƐƵƌĞ
ŚĂǀŝŶŐĂƐƵƌĨĂĐĞĂƌĞĂŽĨϯƐƋƵĂƌĞĨĞĞƚŽƌůĂƌŐĞƌŝƐ
ƌĞĐŽŵŵĞŶĚĞĚ ĨŽƌ Ă ƚLJƉŝĐĂů ĚĞƐŝŐŶ ĐĂƐĞ ϮϬ° ƚĞŵƉĞƌĂƚƵƌĞ
ƌŝƐĞϮϬ-ǁĂƚƚŝŶƚĞƌŶĂůůŽĂĚϲϳ-ǁĂƚƚƐƋƵĂƌĞĨŽŽƚ
dŚĞ ZƃŽŝů d-ϱ ĐĂŶ ďĞ ŵŽƵŶƚĞĚ ĂƐ Ă ƉĂŶĞů ƵŶŝƚ ƵƐŝŶŐ ƚŚĞ
ƐůŝĚĞ-ŽƵƚƚĂďƐŽŶƚŚĞďĂĐŬŽƌŵŽƵŶƚĞĚŽŶĂϯϱŵŵ-ǁŝĚƚŚ/E
ƌĂŝů
Figure 2-4: Sealed Enclosure Temperature Graph
Figure 2-3: Top hat EN 50022 Rail
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DENT Instruments 11 February 8, 2016
Connecting ZƃŽŝůCurrent Sensors
ϭͿ KƉĞŶƚŚĞdďLJƐƋƵĞĞnjŝŶŐƚŚĞĐŽŶŶĞĐƚŽƌůĂƚĐŚĂŶĚƉƵůůŝŶŐŝƚĂƉĂƌƚ
ϮͿ ŽŶŶĞĐƚƚŚĞdĂƌŽƵŶĚƚŚĞĐŽŶĚƵĐƚŽƌƚŽďĞŵĞĂƐƵƌĞĚDĂŬĞƐƵƌĞŶŽŽƚŚĞƌĐŽŶĚƵĐƚŽƌƐĂƌĞǁŝƚŚŝŶ
ƚŚĞůŽŽƉĨŽƌŵĞĚďLJƚŚĞdKƌŝĞŶƚƚŚĞdƐŽƚŚĂƚƚŚĞĂƌƌŽǁŽŶƚŚĞdĐŽŶŶĞĐƚŽƌƉŽŝŶƚƐŝŶƚŚĞ
ĚŝƌĞĐƚŝŽŶŽĨĐŽŶǀĞŶƚŝŽŶĂůĐƵƌƌĞŶƚĨůŽǁ;ƚŽǁĂƌĚƚŚĞůŽĂĚͿ
ϯͿ WƵƐŚƚŚĞĐŽŶŶĞĐƚŽƌďĂĐŬƚŽŐĞƚŚĞƌǁŝƚŚƚŚĞĐŽŶĚƵĐƚŽƌǁŝƚŚŝŶƚŚĞůŽŽƉŽĨƚŚĞd
ϰͿ DĂƌŬĂŶĚƌŽƵƚĞƚŚĞZƃŽŝůƐŝŐŶĂůǁŝƌĞƐƚŽƚŚĞZƃŽŝůd-ϱ
Figure 2-6: Signal Wire
ϱͿ /ĚĞŶƚŝĨLJĂŶĚƚĞƌŵŝŶĂƚĞƚŚĞƐŝŐŶĂůǁŝƌĞƐĨŽƌĐŽŶŶĞĐƚŝŽŶƚŽƚŚĞZƃŽŝůd-ϱ
CT + LEAD CT - LEAD SHIELD
tŚŝƚĞ ƌŽǁŶ ĂƌĞ
Table 2-1: Connection Color Code
Figure 2-5ZƃŽŝůŽŶŶĞĐƚŽƌƐ
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Connecting Current Outputs
dŚĞ ŽƵƚƉƵƚ ĐŽŶŶĞĐƚŽƌ ƉŽůĂƌŝƚLJ ŝƐ ŵĂƌŬĞĚ ŽŶ ƚŽƉ ŽĨ ƚŚĞ ĞŶĐůŽƐƵƌĞ KƵƚƉƵƚ ĐŽŶŶĞĐƚŝŽŶƐ ƐŚŽƵůĚ ďĞ
ƚŝŐŚƚĞŶĞĚƚŽϬϴEŵ;ϳŝŶ-ůďƐͿƚŽĞŶƐƵƌĞĂůŽǁƚĞƌŵŝŶĂƚŝŽŶŝŵƉĞĚĂŶĐĞǀŽŝĚƌŽƵƚŝŶŐƚŚĞŽƵƚƉƵƚǁŝƌĞƐŝŶ
ĐůŽƐĞ ƉƌŽdžŝŵŝƚLJ ǁŝƚŚ ƚŚĞ ƐŝŐŶĂů ŝŶƉƵƚ ǁŝƌĞƐ ƚŽ ĂǀŽŝĚ ŝŶƚƌŽĚƵĐŝŶŐ ĨĞĞĚďĂĐŬ ŽƚŚ ƚŚĞ ŝŶƉƵƚ ĂŶĚ ŽƵƚƉƵƚ
ĐŝƌĐƵŝƚƌLJĂƌĞƚŽůĞƌĂŶƚŽĨƉůƵŐŐŝŶŐĂŶĚƵŶƉůƵŐŐŝŶŐƵŶĚĞƌůŽĂĚǁŝƚŚŽƵƚĚĂŵĂŐŝŶŐƚŚĞd
^ŽŵĞƉŽǁĞƌŵĞƚĞƌƐŚĂǀĞϱŝŶƉƵƚƐǁŚŝĐŚŵĂLJŚĂǀĞƚŚĞŽƉƚŝŽŶŽĨĂƐŚŽƌƚŝŶŐďĂƌƚŚĂƚĐŽŶŶĞĐƚƐƚŚĞ
ŶĞŐĂƚŝǀĞŝŶƉƵƚƐƚŽŐĞƚŚĞƌdŚĞŝŶƉƵƚƐDh^dEKdĐŽŶŶĞĐƚ ƚŽĞĂĐŚŽƚŚĞƌ
dŚĞϯŽƵƚƉƵƚƐŽĨƚŚĞd-ϱŵƵƐƚďĞƐĞƉĂƌĂƚĞĚĨƌŽŵĞĂĐŚŽƚŚĞƌĂŶĚƚŚĞŶĞŐĂƚŝǀĞŽƵƚƉƵƚǁŝƌĞƐŵƵƐƚŶŽƚ
ďĞƚŝĞĚƚŽĞĂĐŚŽƚŚĞƌŽƚŚĞƌǁŝƐĞƐƉƵƌŝŽƵƐƌĞƐƵůƚƐŽƌƐĂƚƵƌĂƚŝŽŶŽĨƚŚĞŚŝŐŚŐĂŝŶŝŶƚĞƌŶĂůĂŵƉůŝĨŝĞƌŵĂLJ
ŽĐĐƵƌ
OUTPUT IMPEDANCE/BURDEN
dŚĞ ZƃŽŝů d-ϱ ŝƐ Ă ďŝƉŽůĂƌ ƉƵƐŚƉƵůů ĐƵƌƌĞŶƚ ƐŽƵƌĐĞ ƚŚĂƚ ŽƉĞƌĂƚĞƐ ŝŶƚĞƌŶĂůůLJĨƌŽŵĂн- ϭϬǀŽůƚ
ƉŽǁĞƌ ƐƵƉƉůLJ dŚĞ ĚĞƐŝŐŶ ƐĞŶƐĞƐ ƚŚĞ ŽƵƚƉƵƚ ĐƵƌƌĞŶƚ ƵƐŝŶŐ Ă ƉƌĞĐŝƐŝŽŶ ƌĞƐŝƐƚŽƌ ĂŶĚ ĚƌŝǀĞƐ Ă ƉĂŝƌ ŽĨ
DK^&d^ƚŚƌŽƵŐŚĂĨĞĞĚďĂĐŬůŽŽƉƚŽĐŽŶƚƌŽůƚŚĞĐƵƌƌĞŶƚ>ŝŶĞĂƌŝƚLJĂŶĚƉƌĞĐŝƐŝŽŶŝƐŵĂŝŶƚĂŝŶĞĚĂƐůŽŶŐ
ĂƐƚŚĞƌĞƋƵĞƐƚĞĚĐƵƌƌĞŶƚĐĂŶďĞĚĞůŝǀĞƌĞĚǁŝƚŚŝŶƚŚĞǀŽůƚĂŐĞĐŽŵƉůŝĂŶĐĞŽĨƚŚĞƐƵƉƉůLJdŚĞĨƌĂĐƚŝŽŶ
ŽĨǀŽůƚĂŐĞĚƌŽƉĂůůŽǁĞĚďLJƚŚĞŽƵƚƉƵƚĐŝƌĐƵŝƚLJ;ŝĞƚŚĞǀŽůƚĂŐĞůŽƐƐĚƵĞƚŽĐƵƌƌĞŶƚĨůŽǁŝŶŐƚŚƌŽƵŐŚƚŚĞ
ƐƵŵ ŽĨ ƚŚĞ ǁŝƌĞ ƌĞƐŝƐƚĂŶĐĞ ĂŶĚ ŵĞƚĞƌ ďƵƌĚĞŶͿ ŝƐ 2ϱϬŵsdŚŝƐĐŽŶĚŝƚŝŽŶŝƐƐĂƚŝƐĨŝĞĚĂƚϱϬĂŵƉƐZD^
ǁŝƚŚĂĐƌĞƐƚĨĂĐƚŽƌŽĨϭϰϭϰĨŽƌĂŶŽƵƚƉƵƚŝŵƉĞĚĂŶĐĞŽĨ50 m-ŽŚŵƐŶŽƚŚĞƌǁĂLJƚŽĞdžƉƌĞƐƐƚŚŝƐůŝŵŝƚŝƐ
ĂďƵƌĚĞŶŽĨϭ2ϱs
The 50 m-ŽŚŵŽƵƚƉƵƚŝŵƉĞĚĂŶĐĞƉůĂLJƐĂĐƌŝƚŝĐĂůƌŽůĞŝŶƚŚĞƐĞůĞĐƚŝŽŶŽĨŽƵƚƉƵƚ ǁŝƌĞ ƐŝnjĞ ĂŶĚ ƚŚĞ
ĂůůŽǁĂďůĞ ĚŝƐƚĂŶĐĞ ďĞƚǁĞĞŶ ƚŚĞ ƉŽǁĞƌ ŵĞƚĞƌ ĂŶĚ ƚŚĞ ZƃŽŝů d-ϱdŚĞƚĂďůĞďĞůŽǁŚĂƐďĞĞŶ
ŐĞŶĞƌĂƚĞĚĂƐƐƵŵŝŶŐƚŚĂƚƚŚĞŵĞƚĞƌďƵƌĚĞŶŝƐϱŵ-ŽŚŵƐůĞĂǀŝŶŐϰ5 m-ŽŚŵƐĨŽƌƚŚĞǁŝƌĞEŽƚĞƚŚĂƚƚŚĞ
ŵĞƚĞƌĚŝƐƚĂŶĐĞŝƐŚĂůĨƚŚĞǁŝƌĞůĞŶŐƚŚ
WIRE AWG M0HMS PER FOOT MAX METER DISTANCE (FT)
12 ϭϱϴϴ ϭϰϯϱ
ϭϰ ϮϱϮϱ ϴϵ
16 ϰϬϭϲ ϱϲ
ϭϳ ϱϬϲϰ ϰϰ
18 ϲϯϴϱ ϯϱ
20 ϭϬϭϱ Ϯϰ
Table 2-2: Allowable Distance
TIP: dǁŝƐƚŝŶŐ ƚŚĞ ŽƵƚƉƵƚ ĐĂďůĞƐ ƚŽŐĞƚŚĞƌ ƚŽ ƌĞĚƵĐĞ ƚŚĞ ĞĨĨĞĐƚƐ ŽĨ ĞůĞĐƚƌŽŵĂŐŶĞƚŝĐ
ŝŶƚĞƌĨĞƌĞŶĐĞƐŚŽƌƚĞŶƐƚŚĞƉŚLJƐŝĐĂůůĞŶŐƚŚŽĨƚŚĞĐĂďůĞďLJĂƉƉƌŽdžŝŵĂƚĞůLJϮϬй
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ZƃŽŝůd-5 TM
DENT Instruments ϭϯ February 8, 2016
dĂďůĞϮ-ϮƐĞƚƐƚŚĞƉƌĂĐƚŝĐĂůmaximum ůĞŶŐƚŚďĞƚǁĞĞŶƚŚĞŵĞƚĞƌĂŶĚƚŚĞZƃŽŝů d-ϱdžƚƌĞŵĞůLJƐŚŽƌƚ
ĐĂďůĞĐŽŶŶĞĐƚŝŽŶƐǁŝƚŚůĂƌŐĞǁŝƌĞƐŚŽƵůĚĂůƐŽďĞĂǀŽŝĚĞĚĞĐĂƵƐĞƚŚĞĂŵƉůŝĨŝĞƌŽƉĞƌĂƚĞƐĨƌŽŵĂĨŝdžĞĚ
ƐƵƉƉůLJǀŽůƚĂŐĞƚŚĞƉŽǁĞƌĚĞůŝǀĞƌĞĚďLJƚŚĞĂŵƉůŝĨŝĞƌŝƐƚŚĞƐĂŵĞĨŽƌĂŐŝǀĞŶĐƵƌƌĞŶƚƌĞŐĂƌĚůĞƐƐŽĨƚŚĞ
ŽƵƚƉƵƚŝŵƉĞĚĂŶĐĞdŚĞŽƵƚƉƵƚŝŵƉĞĚĂŶĐĞŝŵƉĂĐƚƐwhere ƚŚĞŚĞĂƚŝƐŐĞŶĞƌĂƚĞĚ/ĨƚŚĞZƃŽŝůd-ϱŝƐ
ĚĞůŝǀĞƌŝŶŐϱĂŵƉƐĂŶĚƚŚĞŽƵƚƉƵƚŝŵƉĞĚĂŶĐĞŝƐŶĞĂƌnjĞƌŽƚŚĞŶƚŚĞĨƵůůϭϴϳϱǁĂƚƚďƵƌĚĞŶŝƐƉůĂĐĞĚŽŶ
ƚŚĞŝŶƚĞƌŶĂůDK^&d^dŚĞĚĞƐŝŐŶĐĂŶƚŽůĞƌĂƚĞƚŚŝƐĐŽŶĚŝƚŝŽŶďƵƚƚŚĞƚĞŵƉĞƌĂƚƵƌĞ ŽĨƚŚĞĂŵƉůŝĨŝĞƌǁŝůů
ŝŶĐƌĞĂƐĞĐŽŶƐŝĚĞƌĂďůLJƌĞĚƵĐŝŶŐƚŚĞĂĐĐƵƌĂĐLJŽĨƚŚĞƐLJƐƚĞŵ
TIP: hƐĞ Ă ƚƌƵĞ ZD^ sD ƚŽ ŵĞĂƐƵƌĞ ƚŚĞ ǀŽůƚĂŐĞ ĂĐƌŽƐƐ ƚŚĞ ŽƵƚƉƵƚ ƚĞƌŵŝŶĂůƐ ŽĨ ƚŚĞ
ZƃŽŝů d-ϱǀŽůƚĂŐĞĂďŽǀĞ250 ŵsZD^ŝŶĚŝĐĂƚĞƐƚŚĂƚƚŚĞƐŝŐŶĂůŵĂLJďĞĐůŝƉƉĞĚ
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Chapter
February 8, 2016 14 DENT Instruments
3
Input Signal
EdZƃŽŝůĐƵƌƌĞŶƚƐĞŶƐŽƌƐƉƌŽĚƵĐĞĂƐŝŐŶĂůǀŽůƚĂŐĞŝŶĂĐĐŽƌĚĂŶĐĞǁŝƚŚ
ܸ=
െANɊodl
dt
L
tŚĞƌĞ/ŝƐƚŚĞĐƵƌƌĞŶƚĨůŽǁŝŶŐŝŶƚŚĞŵĞĂƐƵƌĞŵĞŶƚĐŽŶĚƵĐƚŽƌ ĂŶĚ EʅŽĂŶĚ>ĂƌĞĚĞƚĞƌŵŝŶĞĚďLJƚŚĞ
ƉŚLJƐŝĐĂůĐŽŶƐƚƌƵĐƚŝŽŶŽĨƚŚĞZƃŽŝů
EdZƃŽŝůƐĂƌĞŵĂŶƵĨĂĐƚƵƌĞĚƚŽƉƌŽĚƵĐĞϮϭϴϯ୳כୌ
୫୮ ǁŚŝĐŚŝƐŵŽƌĞĐŽŵŵŽŶůLJĞdžƉƌĞƐƐĞĚĂƐ
ϭϯϭϬ ŵsŬΛϲϬ,njĂŶĚϭϬϵϮŵsŬΛϱϬ,nj
dŚĞZƃŽŝůd-ϱŝƐĨĂĐƚŽƌLJĐĂůŝďƌĂƚĞĚ ĨŽƌƵƐĞǁŝƚŚEdZƃŽŝůƐdŚĞƵƐĞŽĨŽƚŚĞƌZŽŐŽǁƐŬŝďƌĂŶĚƐǁŝůů
ŝŶƚƌŽĚƵĐĞĂƐĐĂůŝŶŐĞƌƌŽƌdŚĞZƃŽŝůd-ϱŝƐĞdžƚƌĞŵĞůLJƐĞŶƐŝƚŝǀĞĂŶĚĂĐĐƵƌĂƚĞůLJƚƌĂŶƐůĂƚĞƐĐŽŶĚƵĐƚŽƌ
ĐƵƌƌĞŶƚƐďĞƚǁĞĞŶϱϬϬŵĂŶĚϱϬϬϬĂŵƉƐŝŶƚŽŵĞƚĞƌĐƵƌƌĞŶƚƐďĞƚǁĞĞŶϱϬϬƵĂŶĚϱϬĂŵƉƐ
dŚĞŽƉĞƌĂƚŝŽŶŽĨƚŚĞZƃŽŝůd-ϱŝƐďĞƐƚĞdžƉƌĞƐƐĞĚƵƐŝŶŐǀĞĐƚŽƌŶŽƚĂƚŝŽŶĂŶĚŝƐŝůůƵƐƚƌĂƚĞĚĂƐĂǀĞĐƚŽƌ
ĚŝĂŐƌĂŵŝŶ&ŝŐƵƌĞϯ-ϭŶĞdžƚƉĂŐĞdŚĞǀŽůƚĂŐĞŐĞŶĞƌĂƚĞĚďLJƚŚĞZƃŽŝůƐĞŶƐŽƌůĞĂĚƐƚŚĞĐƵƌƌĞŶƚĨůŽǁŝŶŐ
ŝŶƚŚĞŵĞĂƐƵƌĞŵĞŶƚĐŽŶĚƵĐƚŽƌďLJĂůŵŽƐƚϵϬĚĞŐƌĞĞƐ;ĂŶŐůĞĞdžĂŐŐĞƌĂƚĞĚĨŽƌĐůĂƌŝƚLJͿůĂďĞůĞĚ;ϭͿdŚĞ
ƉŽƐŝƚŝǀĞyĂdžŝƐ;ϬĚĞŐƌĞĞƐͿŝƐƚŚĞĐƵƌƌĞŶƚǀĞĐƚŽƌŽĨƚŚĞĐŽŶĚƵĐƚŽƌďĞŝŶŐŵĞĂƐƵƌĞĚ
Theory of Operation
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Figure 3-ϭZƃŽŝůdΡsĞĐƚŽƌŝĂŐƌĂŵ
Range Selection
dŚĞZƃŽŝůd-ϱ ƌĂŶŐĞƐĞůĞĐƚŝŽŶƐůŝĚĞƌƐǁŝƚĐŚƐĞůĞĐƚƐƚŚĞƉƌŝŵĂƌLJŐĂŝŶŽĨƚŚĞĂŵƉůŝĨŝĞƌ/ŶƚĞƌŶĂů
ĨĞĞĚďĂĐŬǁŝƚŚŐĂŝŶƐŽĨϭϮϱĂŶĚϭϬĂƌĞƐĞůĞĐƚĞĚƵƐŝŶŐůĂƐĞƌƚƌŝŵŵĞĚƉƌĞĐŝƐŝŽŶƌĞƐŝƐƚŽƌƐǁŝƚŚŝŶĂŶ
ŝŶǀĞƌƚŝŶŐƉƌĞĐŝƐŝŽŶŽƉĞƌĂƚŝŽŶĂůĂŵƉĐŝƌĐƵŝƚ;ƐŚŽǁŶĂƐǀĞĐƚŽƌƐϮĂŶĚϯŝŶ&ŝŐƵƌĞϯ-ϭͿdŚĞƵƌƌĞŶƚZĂŶŐĞ
^ĞůĞĐƚŽƌŝƐŶŽƌŵĂůůLJƐĞƚƚŽƚŚĞŶĞĂƌĞƐƚǀĂůƵĞŽǀĞƌƚŚĞƐŝnjĞŽĨƚŚĞďƌĞĂŬĞƌĨĞĞĚŝŶŐƚŚĞůŽĂĚďĞŝŶŐ
ŵĞĂƐƵƌĞĚ&ŽƌĞdžĂŵƉůĞƚŚĞϭϬϬϬĂŵƉƐĞƚƚŝŶŐǁŽƵůĚďĞƵƐĞĚǁŝƚŚĂŶϴϬϬĂŵƉƐĞƌǀŝĐĞďƌĞĂŬĞƌ/ĨƚŚĞ
ƐŝnjĞŽĨƚŚĞůŽĂĚŝƐŬŶŽǁŶƚŽďĞŵƵĐŚƐŵĂůůĞƌƚŚĂŶƚŚĞƐĞƌǀŝĐĞĐĂƉĂĐŝƚLJďĞƚƚĞƌĂĐĐƵƌĂĐLJĐĂŶďĞŽďƚĂŝŶĞĚ
ďLJƐĞůĞĐƚŝŶŐƚŚĞƌĂŶŐĞĐůŽƐĞƐƚƚŽƚŚĞĂĐƚƵĂůƵƐĂŐĞ
/ĨƚŚĞĂĐƚƵĂůĐƵƌƌĞŶƚŝƐŚŝŐŚĞƌƚŚĂŶƚŚĞƐĞůĞĐƚĞĚƌĂŶŐĞƚŚĞZƃŽŝůd-ϱǁĂǀĞĨŽƌŵǁŝůůďĞĐůŝƉƉĞĚĂŶĚǁŝůů
ŶŽƚŐŝǀĞĂŶĂĐĐƵƌĂƚĞƌĞĂĚŝŶŐdŚĞĞĨĨĞĐƚŽĨĐůŝƉƉŝŶŐƚŚĞǁĂǀĞĨŽƌŵŝƐŝůůƵƐƚƌĂƚĞĚŝŶ&ŝŐƵƌĞϯ-Ϯ
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ZƃŽŝůd-ϱTM
DENT Instruments 16 February 8, 2016
Figure 3-ϮZƃŽŝůůŝƉƉĞĚtĂǀĞĨŽƌŵ
^ĞǀĞƌĞůLJĐůŝƉƉĞĚ
ǁĂǀĞĨŽƌŵƐƌĞƐĞŵďůĞĂ
ƐƋƵĂƌĞǁĂǀĞŶƐƵƌĞƚŚĂƚ
ƚŚĞƐĞůĞĐƚĞĚĐƵƌƌĞŶƚ
ƌĂŶŐĞŽĨƚŚĞŵĞƚĞƌŝƐ
ĂďŽǀĞƚŚĞĐƵƌƌĞŶƚĨůŽǁŝŶŐ
ŝŶƚŚĞmeasurement
ĐŝƌĐƵŝƚƚŽĂǀŽŝĚƚŚŝƐ
ĐŽŶĚŝƚŝŽŶ
NOTE: dŚĞ ZƃŽŝů d-ϱ
ǁŝůůŶŽƚďĞĚĂŵĂŐĞĚŝĨƚŚĞ
ŽƵƚƉƵƚŝƐŽǀĞƌ-ƌĂŶŐĞĚĂŶĚ
ŝƐĐůŝƉƉŝŶŐ
Integration
dŚĞZƃŽŝůd-ϱ ĞŵƉůŽLJƐĂŶŝŶƚĞƌŶĂůƉƌĞĐŝƐŝŽŶĂŶĂůŽŐŝŶƚĞŐƌĂƚŽƌƚŽĐŽŵƉĞŶƐĂƚĞĨŽƌƚŚĞƉŚĂƐĞĂŶŐůĞ
ƉƌŽĚƵĐĞĚďLJƚŚĞZƃŽŝůĐƵƌƌĞŶƚƐĞŶƐŽƌ;ǀĞĐƚŽƌϰͿ&ŽƌƚŚŝƐƌĞĂƐŽŶƚŚĞdĐĂŶŶŽƚďĞƵƐĞĚǁŝƚŚĂϯϯϯŵs
ƐƉůŝƚĐŽƌĞĐƵƌƌĞŶƚƚƌĂŶƐĚƵĐĞƌƵŶůĞƐƐƚŚĞƉŚĂƐĞŝŶĨŽƌŵĂƚŝŽŶŝƐŶŽƚŶĞĞĚĞĚ
Frequency Selection
dŚĞZƃŽŝůd-ϱ ŚĂƐďĞĞŶƐƉĞĐŝĨŝĐĂůůLJĚĞƐŝŐŶĞĚĂŶĚĐĂůŝďƌĂƚĞĚƚŽǁŽƌŬǁŝƚŚϱϬĂŶĚϲϬ,njĐŝƌĐƵŝƚƐdŚĞ
ϱϬϲϬ,njƐůŝĚĞƌƐĞůĞĐƚƐŽŶĞŽĨƚǁŽƐŵĂůůĂŶŐůĞĐŽƌƌĞĐƚŝŽŶǀĞĐƚŽƌƐĂŶĚŝŶǀĞƌƚŝŶŐǀĞĐƚŽƌƐ;ϱĂŶĚϲͿďƌŝŶŐŝŶŐ
ƚŚĞĂŵƉůŝĨŝĞƌƉŚĂƐĞǁŝƚŚŝŶϬϭĚĞŐƌĞĞŽĨƚŚĞƌĞĨĞƌĞŶĐĞĐŽŶĚƵĐƚŽƌƉŚĂƐĞ/ĨƚŚĞŝŶĐŽƌƌĞĐƚĨƌĞƋƵĞŶĐLJŝƐ
ƐĞůĞĐƚĞĚĂƉŚĂƐĞĞƌƌŽƌŽĨϬϲĚĞŐƌĞĞƐǁŝůůƌĞƐƵůƚdŚĞƐĞŶƐŝƚŝǀŝƚLJŽĨƚŚĞƉŚĂƐĞƚŽĨƌĞƋƵĞŶĐLJŝƐ
ĂƉƉƌŽdžŝŵĂƚĞůLJϬϲĚĞŐƌĞĞƐƉĞƌ,njdŚĞZƃŽŝůdĐĂŶďĞƵƐĞĚŽŶƉŽƌƚĂďůĞŐĞŶĞƌĂƚŽƌƐǁŚĞƌĞĨƌĞƋƵĞŶĐLJ
ŝƐŶŽƚǁĞůůƌĞŐƵůĂƚĞĚ
Performance
dŚĞZƃŽŝůd-ϱĐĂŶďĞƐƵƉƉůŝĞĚǁŝƚŚZƃŽŝůĨůĞdžŝďůĞĐƵƌƌĞŶƚƚƌĂŶƐĨŽƌŵĞƌƐ;ƉƵƌĐŚĂƐĞĚƐĞƉĂƌĂƚĞůLJͿdŚĞ
ĐŽŵďŝŶĞĚĞƌƌŽƌƐŽĨƚŚĞdƵƐĞĚŝŶĐŽŶũƵŶĐƚŝŽŶǁŝƚŚƐƵƉƉůŝĞĚdƐŝƐƚLJƉŝĐĂůůLJďĞƚƚĞƌƚŚĂŶϭй
hZZEdZE'^dd/E' D/EhZZEdΛϭйZZOR DyhZZEd
ϱϬϬ ϱ ϱϬϬ
ϭϬϬϬ ϭϬ ϭϬϬϬ
ϮϱϬϬ Ϯϱ ϮϱϬϬ
ϱϬϬϬ ϱϬ ϱϬϬϬ
dĂďůĞϯ-1: Min/Max Current Range
d/W hƐĞĂƚƌƵĞZD^sDƚŽŵĞĂƐƵƌĞƚŚĞǀŽůƚĂŐĞĂĐƌŽƐƐƚŚĞŽƵƚƉƵƚƚĞƌŵŝŶĂůƐŽĨƚŚĞ
ZƃŽŝů d-ϱǀŽůƚĂŐĞĂďŽǀĞϮϱϬ ŵsZD^ŝŶĚŝĐĂƚĞƐƚŚĂƚƚŚĞƐŝŐŶĂůŵĂLJďĞĐůŝƉƉĞĚ
ůŝƉƉĞĚƐŝŶĞǁĂǀĞ
VV p > V cc
hŶĐůŝƉƉĞĚƐŝŶĞǁĂǀĞ
VV p < VV c
V pp
+V cc
0
- V cc
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Chapter
February 8, 2016 17 DENT Instruments
4
Frequently Asked Questions
How can I tell if the amplifier is clipping?
The voltage across the output terminals is above 250mV RMS. Correct this by using a larger wire
gauge or moving the TCA-5 closer to the meter.
Does output clipping damage the unit?
Clipping the output signal does not harm the TCA-5 as long as the output current remains less than
5 amps, as in the case when the output impedance is greater than 50m-ohms or the output wires
are disconnected.
Why does the TCA-5 run so hot?
Each channel dissipates approximately 5 watts of heat at full power.
Why is the TCA-5 limited to 4.5 Amps RMS on 3 single-phase loads?
The TCA-5 has a peak internal current of 19 amps.
Is there any configuration that can cause the TCA-5 to fail?
The TCA-5 will attempt to deliver more than 5 amps if the current being measured is larger than the
selected range. For example: placing the ZƃŽŝů current sensor around a conductor with 900 amps
flowing through it. The TCA-5 will deliver 9 amps of current into the output even though the 500
amp range is selected on the front panel. If the output burden is low enough, the TCA will deliver
the requested current and burn out the channel if this condition persists. Note that this scenario is
limited to single phase measurements. A balanced three phase system will share the current
between channels preventing any one channel from overheating.
Is there a 24-volt version?
Not at this time.
Is there a single phase version?
The TCA-5 can be used on single-phase circuits, however there is currently no "1 channel model."
FAQs
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ZƃŽŝůd-5 TM
DENT Instruments 18 February 8, 2016
Can the TCA-5 be used with 333mV current sensors?
The TCA-5 includes a 90 degree phase shifter. It can only be used with 333mV sensors to report
current, NOT POWER.
I had the 50Hz selector on by mistake. Is my collected data any good?
Yes, the phase angle will be reported 0.6 degrees higher than actual, which is also about 0.6% low
for a PF of 0.866.
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2
Table of contents
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