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<html><head><title>Delta Electronics, Inc. Models TCT-N, -HV and -XHV</title></head>
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<center><img src=../delta1.jpg alt="Delta Electronics, Inc.">
<h2>Model TCT-N, Model TCT-N-HV and Model TCT-N-XHV<br>
Toroidal Current Transformers</h2>
<br>
<table cellpadding=6>
<tr><td><center><img src="tct-hv.jpg" alt="TCT-N-HV"></center></td>
<td><center><img src="tct-std.jpg" alt="TCT-N"></center></td>
<td><center><img src="tct-xhv.jpg" alt="TCT-N-XHV"></center></td>
</tr>
<tr><td><center><b>Model TCT-N-HV<b></center></td>
<td><center><b>Model TCT-N<b></center></td>
<td><center><b>Model TCT-N-XHV<b></center></td>
</tr>
</table></center>
<p>
<hr>
<h3>Introduction</h3>
The TCT series of precision toroidal current transformers provides sample voltages for RF current phase and
magnitude measurement on broadcast antenna arrays. The transformers are available with center conductor voltage
ratings of 10 kV<font size=-2><sub>RMS</sub></font>, 20 kV<font size=-2><sub>RMS</sub></font> or 42.4 kV<font size=-2><sub>RMS</sub></font> for use with low to high power antenna arrays and standard to high
impedance antennas. The transformer may be combined with any of Delta's standard <a href="tcadata.htm">TCA-N-EX or TCA-N-EXR single scale or TCA-N/N-EXR dual scale RF ammeters</a> for precision RF current measurements.
<p>
<h3>Description</h3>
The TCT-N transformer is assembled in a rectangular aluminum enclosure with a 1.25" diameter insulated clearance hole for the antenna conductor. This clearance enables operation with conductor voltages as high as 14 kV peak (10 kV<font size=-2><sub>RMS</sub></font>). Although conductor type, size and placement are generally not critical for the TCT-N transformer, a 0.38 to 0.5" diameter tubular conductor centered in the clearance hole provides optimum voltage capability. The TCA-LS-8 and TCA-LS-11 line sections which increase the TCT-N voltage rating by approximately 50% are available as a factory installed option.<p>
The TCT-N-HV transformer is assembled in an aluminum enclosure with a 3.38" diameter clearance hole for the antenna conductor. This large clearance enables operation with conductor voltages as high as 28 kV peak (20 kV<font size=-2><sub>RMS</sub></font>). A 0.75 to 1.0" diameter tubular conductor centered in the clearance hole provides maximum voltage capability. Corona rings which increase the TCT-N-HV voltage rating by approximately 5% are available as a factory installed option.<p>
The TCT-N-XHV transformer is assembled in a rectangular aluminum enclosure with a 6.0" diameter clearance hole for the antenna conductor. This large clearance enables operation with conductor voltages as high as 60 kV peak (42.4 kV<font size=-2><sub>RMS</sub></font>). A 2.0 to 2.25" diameter tubular conductor centered in the clearance hole provides maximum voltage capability.<p>
Several versions of the TCT transformer are available for different RF current sampling requirements. The TCT-1, TCT-1-HV and TCT-1-XHV transformers provide 0.5 V<font size=-2><sub>RMS</sub></font> across a 50 ohm external load for each Ampere of current flowing in the antenna conductor. These models are rated for currents up to 40 A<font size=-2><sub>RMS</sub></font>. The TCT-2, TCT-2-HV and TCT-2-XHV transformers provide a 0.25 V<font size=-2><sub>RMS</sub></font>/Ampere sample across a 50 ohm external load and are rated for currents up to 80 A<font size=-2><sub>RMS</sub></font>. The TCT-3 and TCT-3-HV transformers provide a 1.0 V<font size=-2><sub>RMS</sub></font>/Ampere sample across a 50 ohm external load and are rated for currents up to 20 A<font size=-2><sub>RMS</sub></font>. The TCT-4, TCT-4-HV and TCT-4-XHV transformers and the TCT-5, TCT-5-HV and TCT-5-XHV transformers are high output, unterminated units which are used only with the 5, 10, 5/10 and 10/20 Ampere <a href="tcadata.htm">TCA RF Ammeters</a>. The TCT-6-HV and TCT-6-XHV transformers provide a 0.125 V<font size=-2><sub>RMS</sub></font>/Ampere sample across a 50 ohm external load and are rated for currents up to 160 A<font size=-2><sub>RMS</sub></font>.
<p>
The TCT-1 and TCT-2 may be used in the same directional antenna system since they have identical phase and magnitude tracking characteristics. The TCT-3 transformer has different characteristics and should not be mixed with the other two models. The TCT-1-HV, TCT-2-HV and TCT-6-HV may be used in the same directional antenna system since they have identical phase and magnitude tracking characteristics. The TCT-3-HV transformer has different characteristics and should not be mixed with the other three models. All TCT-N-XHV transformers may be used in the same directional antenna system since they have identical phase and magnitude tracking characteristics. The TCT-N series of transformers should not be mixed with the TCT-N-HV or TCT-N-XHV transformers due to the differences in the toroid inductors used in each design. Similarly, the TCT-N-HV series of transformers and the TCT-N-XHV series of transformers should not be mixed with the other series of transformers due to the difference in the toroid inductors used in each design.
<h3>Installation Drawings</h3>
<a name="list"></a>For case outline, conductor location, mounting and associated installation dimensions, select one of the following:
<ul>
<li><a href="tctn.htm"> Model TCT-N Installation Drawing</a>
<li><a href="tctn-hv.htm"> Model TCT-N-HV Installation Drawing</a>
<li><a href="tctn-xhv.htm">Model TCT-N-XHV Installation Drawing</a>
</ul>
<hr>
<center>
<table border cellpadding=12 bgcolor=White>
<caption><strong>SPECIFICATIONS</strong></caption>
<tr><td>
<table cellpadding=4>
<tr><td width=100><nbsp></td>
<td width=200><strong>TCT-N</strong></td>
<td width=220><strong>TCT-N-HV</strong></td>
<td width=200><strong>TCT-N-XHV</strong></td>
</tr>
<tr valign="bottom"><td width=100><strong>Frequency Range:</strong></td>
<td width=200>0.5 to 2 MHz</td>
<td width=220>0.5 to 2 MHz</td>
<td width=200>0.5 to 2 MHz</td>
</tr>
<tr valign="top">
<td width=100><strong>Sensitivity*:<br>(Volts/Ampere)</strong></td>
<td width=200>TCT-1: 0.5<br>TCT-2: 0.25<br>TCT-3: 1.0<br>TCT-4: 1.0<br>TCT-5: 2.0</td>
<td width=220>TCT-1-HV: 0.5<br>TCT-2-HV: 0.25<br>TCT-3-HV: 1.0<br>TCT-4-HV: 1.0<br>TCT-5-HV: 2.0<br>TCT-6-HV: 0.125</td>
<td width=200>TCT-1-XHV: 0.5<br>TCT-2-XHV: 0.25<br><br>TCT-4-XHV: 1.0<br>TCT-5-XHV: 2.0<br>TCT-6-XHV: 0.125</td>
</tr>
<tr><td width=100><strong>Source Impedance:</strong></td>
<td width=200> 50 Ohms</td>
<td width=220> 50 Ohms</td>
<td width=200> 50 Ohms</td>
</tr>
<tr valign="top">
<td width=100><strong>Current Range:<br>(Amps)</strong></td>
<td width=200>TCT-1: 0 - 40<br>TCT-2: 0 - 80<br>TCT-3: 0 - 20<br>TCT-4: 0 - 20<br>TCT-5: 0 - 10<br></td>
<td width=220>TCT-1-HV: 0 - 40<br>TCT-2-HV: 0 - 80<br>TCT-3-HV: 0 - 20<br>TCT-4-HV: 0 - 20<br>TCT-5-HV: 0 - 10<br>TCT-6-HV: 0 - 160</td>
<td width=200>TCT-1-XHV: 0 - 40 <br>TCT-2-XHV: 0 - 80<br><br>TCT-4-XHV: 0 - 20<br>TCT-5-XHV: 0 - 10<br>TCT-6-XHV: 0 - 160</td>
</tr>
<tr valign="bottom">
<td width=100><strong>Absolute Magnitude Accuracy:</strong></td>
<td width=200>±2%</td>
<td width=220>±2%</td>
<td width=200>±2%</td>
</tr>
<tr valign="top">
<td width=100><strong>Absolute Phase Accuracy†:</strong></td>
<td width=200>TCT-1, TCT-2: ±2º<br>TCT-3: ±3º</td>
<td width=220>TCT-1, -2 & -6-HV: ±2º<br>TCT-3-HV: ±3º</td>
<td width=200>TCT-1, -2 & -6-XHV: ±2º</td>
</tr>
<tr valign="bottom">
<td width=100><strong>Magnitude Tracking Accuracy:</strong></td>
<td width=200>±1%</td>
<td width=220>±1%</td>
<td width=200>±1%</td>
</tr>
<tr valign="top">
<td width=100><strong>Phase Tracking Accuracy†:</strong></td>
<td width=200> TCT-1, TCT-2: ±0.5º<br> TCT-3: ±1º</td>
<td width=220> TCT-1, -2 & -6-HV: ±0.5º<br> TCT-3-HV: ±1º</td>
<td width=200> TCT-1, -2 & -6-XHV: ±1º</td>
</tr>
<tr valign="top">
<td width=100><strong>Insulation:</strong></td>
<td width=200>14 kV peak (10 kV<font size=-2><sub>RMS</sub></font>)<br>Optional TCA-LS-8 or TCA-LS-11 line section increases voltage rating to 21 kV peak (15 kV<font size=-2><sub>RMS</sub></font>)</td>
<td width=220>28 kV peak (20 kV<font size=-2><sub>RMS</sub></font>)<br>Optional corona rings increase voltage rating 5%</td>
<td width=200>60 kV peak (42.4 kV<font size=-2><sub>RMS</sub></font>)</td>
</tr>
<tr valign="bottom">
<td width=100><strong>Electric Field Rejection:</strong></td>
<td width=200>>100 dB</td>
<td width=220>>100 dB</td>
<td width=200>>100 dB</td>
</tr>
<tr>
<td width=100><strong>Dimensions:</strong><br>(W x H x D)<br>Inches<br>cm</td>
<td width=200><br><br>5.25 x 5.75 x 2.25<br>13.3 x 14.6 x 5.7</td>
<td width=220><br><br>6.25 x 7.25 x 2.25<br>15.9 x 18.4 x 4.7</td>
<td width=200><br><br>12.75 x 12.00 x 3.00<br>32.4 x 30.5 x 7.6</td>
</tr>
<tr>
<td width=100><strong>Weight:</strong><br>Pounds<br>kg</td>
<td width=200><br>3.5<br>1.6</td>
<td width=220><br>5.5<br>2.5</td>
<td width=200><br>17<br>7.7</td>
</tr>
<tr valign="top">
<td width=100><strong>Order Numbers:</strong></td>
<td width=200>923-0001-00N<br>where N = 1,2,3,4 or 5</td>
<td width=220>923-0003-00N<br>where N = 1,2,3,4, 5 or 6</td>
<td width=200>923-0004-00N<br>where N = 1,2,4,5 or 6</td>
</tr>
</table>
<table cellpadding=4>
<tr valign="top">
<td><strong>*</strong></td><td>When terminated in external 50 ohm load. Other sensitivities and corresponding RF Ammeter current ranges available on special order.</td></tr><tr valign="top"><td><strong>†</strong></td><td>The Model TCT-4, TCT-5, TCT-4-HV, TCT-5-HV, TCT-4-XHV and TCT-5-XHV toroidal current transformers are supplied only with the Model TCA-5, -10, -5/10 and -10/20 RF Ammeters and are not characterized for absolute phase accuracy and for phase tracking accuracy.</td><td><nbsp>
</td></tr>
</table>
</tr></td>
</table>
<hr>
For additional information on any of our products, please contact <a href="mailto:[email protected]">Sales</a> to discuss your particular requirements:
<center><table cellpadding=20>
<tr>
<td><strong>Delta Electronics, Inc.<br>
5730 General Washington Drive<br>
P. O. Box 11268<br>Alexandria, VA 22312<br><br></strong></td>
<td><strong>Phone: (703) 354-3350<br>
U.S. Toll Free: 1-800-8-DELTA-8 (1-800-833-5828)<br>
Fax: (703) 354-0216<br>
<address>www.deltaelectronics.com</address>
Email: <a href="mailto:[email protected]">[email protected]</a></strong></td>
</tr>
</table></center><hr>
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