Go Split Core for Easy Monitoring Maintenance

Solid core current transformers typically have a long lifespan, however, they do break down over time. When they do, it can sometimes be difficult, if not impossible, to replace them without affecting power delivery downstream.

When continuous power delivery is a must, utilizing split core CTs might be ideal. Since the rings of a split core CT can be opened up, removal and installation of the device can be achieved without having to disconnect the feeder lines they are meant to monitor.

It should be noted, however, that split core CTs do have their disadvantages over solid core CTs:

First, split core CTs are typically less accurate than solid core CTs. When accuracy is your priority, going solid core may be your only option. When faced with such a case, it may be best to incorporate a backup power supply in your design so that the main feeders can be disconnected for safe replacement of the solid core CT.

Second, split core CTs are also more expensive than solid core CTs. Some would argue, however, that in cases where a backup power supply is not a feasible option, the cost of using split core CTs can be justified by the mitigated impact to production the replacement of a CT might otherwise have.

Finally, split core CTs are bulkier than their solid core counterparts. While this might not be a problem in most cases, such aspect should be highly considered when space is at a premium.