High Isolation Voltage Ethernet Transformer

Poe operates in the lower voltage telecom range generally in the 36 57 v range but up to 73 v typically over category 5 cat 5 ethernet cables.

High isolation voltage ethernet transformer.

You will find this question why are ethernet rj45 sockets magnetically coupled answered on the electrical engineering se the utp cabling specifications call for a four pair cable. 10base t and 100base tx use two of the pairs one transmit and one receive pair while 1000base t requires all four pairs both transmitting. View ethernet transformer and transformer choke components from pulse electronics networking bu. High isolation ethernet transformers for pulse electronics networking introduces a new series of high isolation ethernet transformers specifically designed to meet the stringent requirements of medical and industrial applications where equipment functionality and safety are key.

We offer a full standard line of epoxy cast isolation transformers with standard primary voltages ranging from 120 v to 240 v isolation voltages of 30 kvdc or 50 vkdc standard va ratings from 100 va to 1000 va and capacitance from 70 pf to 140 pf. No conductive path is present between source and load this isolation is used to protect against electric. In reality many commercially available transformers will actually standoff transient voltages in the 4 8kv range before the isolation is breached. Pulse s switch mode high isolation transformers are rohs compliant and meet standard eia481 requirements.

They have been certified by ul to comply with ul60950 1 2 edition by can csa c22 2 no. Available in multiple package speed and poe rating options. 60950 1 07 2 edition and by tuv to comply with en61558 1 and en61558 2 16 with reinforced insulation. An isolation transformer is a transformer used to transfer electrical power from a source of alternating current ac power to some equipment or device while isolating the powered device from the power source usually for safety reasons.

The transformer isolation and the termination network provide protection against common mode surges. 4000vrms isolation voltage is guaranteed to. I ve got lots of options for voltage isolation ranging from using potential transformers step down transformers for sampling the input voltage or using linear opto couplers or even placing the a d converters at the line side and using digital isolators to get the signals to the micro that does the ethernet stuff. As we noted transformers in ethernet applications have a minimum isolation voltage of 2 1kv.