Why are Electronic Contactor Coils Important?
Electronic Coils on CRC 100 – CRC 800
The electronic coil provides dramatic improvement in operation over standard coils, offering an extremely wide operating voltage range and a very low consumption for the size of the contactor. For example, a typical 400 Amp contactor with a 120 volt coil will draw over 1 amp on inrush and holding current of 30 to 40 milliamps. With our electronic coil in a comparable size the inrush is only 393 milliamps and holding current is less than 15 milliamps. This will save significantly in sizing power transformers for the coil. Additionally the electronic coil has an extremely wide range of operation- for the 120Volt example above the coil is actually a100 – 200 Volt coil with a AC or DC operation!
In addition to these performance improvements over standard coils, the electronic coils offer one other operational improvement: Jam Protection. This feature shuts off the coil current in the event of a mechanical jam within the contactor. This prevents the coil from overheating and potentially catching fire- a real possibility with larger contactor coils,particularly on standard coils that draw over 1 amp! In normal operation most users will not ever see this feature in operation. However, when the electronic coils are used with mechanical interlocks, the jam feature may prevent smooth operation if there is not sufficient overlap between the opening and closing of the two contactors. If you plan to use our 100 amp or larger contactors with a mechanical interlock, contact your Cerus representative for application recommendations.
Cerus electronic coils for CRC-100 -800:
- Wide range and easy to apply.
- Low current consumption for energy and cost savings.
- Jam protection for safety.
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Tags: CRC-800 contactor coils motor controls industrial hvac CRC-100 jam protection coil current electronic coils
It looks like I might need further assistance in installing electronic coils, not on the electric part but on the mechanical part. Thanks for providing informational support!
There are many different styles of contactors and coils so it might be a good idea for you to give us a call at your convenience if you are having any difficulty with the mechanical aspect of installing or replacing a coil in a contactor. We can actually grab the same contactor that you may be working with and describe everything for you in real time over the phone. That being said, the electronic coils for the CRC-100 - 800 line of contactors are usually fairly easy to replace. The coil is removed from the contactor by lifting up on the small orange releasing tab located between and below the A1 and A2 terminals of the coil and then gently sliding the coil out and away from the contactor. The tricky part is removing the solid metal core from the old coil and swapping it over to the new coil you’re installing. This can sometimes be difficult and it does require a good deal of force to release the metal core from the tabs that hold it to the coil. Please feel free to give us a call if you’re having trouble with this part and we’ll be happy to help walk you through the best positions to apply the force needed to separate the core from the coil. Once the core has been transferred to the new coil, the completed coil can simply be slid back into the contactor housing until the orange release tab locks back into place. If you have any questions or if there is anything else we can help you with please let us know. We’re available Monday - Friday 7:30A.M. - 4:00P.M. Pacific Standard Time.
Sincerely,
Ethan N. Broten
Technical Support Representative
Direct: 503.906.1214
Toll Free: 1.800.962.3787 ext.214
Fax: 503.643.4925Блог отличный. Надо бы Вам награду вручить за него или просто почетный орден. ;)