We perform routine protective relay calibrations, replacements, and upgrades. Numerous times during routine testing, it becomes apparent that the settings aren't correct. IET has the ability to provide engineering service to determine the proper set points and then update the relays for the new data. All wiring is done in a craftsman like manner with high quality terminations and terminal blocks. It is our policy to only use switchboard wire during these installations and use self-laminating wire labels on all terminations. At one location, 30 -351A SEL's were installed in switchgear. Below is a 587 SEL installation at a city utility which then followed with 2 more at other subs. The 587 is a transformer differential relay.
We also have a supply of surplus electro-mechanical relays that are in good condition that can be sup-plied quickly to support your needs.