TEC Nuclear Division - TEC Model 159 Digital Signal Isolator

TEC Model 159

Digital Signal Isolator

TEC Model 159

1000V input/output isolation

EMI/RFI tested

Common mode rejection

High input impedance

Low power requirements

Small size, easily mounted

The TEC Model 159 Digital Signal Isolator is a qualified digital signal isolation device, providing better than 120 dB (at 60 Hz) isolation between input and output. The input and output ranges of available models are tabulated below. Effective isolation is provided while powering the isolator from the non-1E side.

The TEC Model 159 Isolator is designed for field mounting. For multiple isolators and train separation, qualified NEMA enclosures and wall mountings are available. Type testing of the TEC Model 159 is in accordance with IEEE Standards 323-1974, 344-1975, and 381-1977.

Input Signal Ranges
Model	High Input Range*	Low Input Range**
159A (-1 or -2)***	15kW - 3kW	10 kW - 33 kW
159B (-1 or -2)	65 - 106 V dc	56 - 34 V dc
159C (-1 or -2)	65 - 106 V ac	56 - 34 V ac
159D (-1 or -2)	129 - 208 V dc	109 - 66 V dc
159E (-1 or -2)	129 - 208 V ac	109 - 66 V ac
159F (-1 or -2)	3.3 - 4.1 V dc	2.9 - 2.0 V dc
159 G (-1 or -2)	10.1 - 15.0 V dc	8.6 - 5.4 V dc

* -1 Output transition is from low to high in this range
** -1 Output transition is from high to low in this range
** -2 Output is inverse of -1 output
*** Resistor sense model

Output Signal Ranges
Output High (Logic "1")	Open Circuit, 5 V dc ą0.5 V dc in series with 4.7 kW ą5%
Output Low (Logic "0")	0.4 V dc max at 16.0 mA sink current

TEC's QA/QC program meets the requirements of 10CFR Part 50, Appendix B, and 10CFR Part 21. For qualification specific to this product, go to the Model 159 Qualification page. Full details may be reviewed by accessing the Product Description (Adobe Reader Required).

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