Medium Voltage Current Transformer Abb

Instrument transformers and sensors.

Medium voltage current transformer abb.

At the same time the potential increase in upper range current will provide assets additional protection. Ca 230 800 kv scof 15 38 kv scxm 15 38 kv current transformer lb 30 5 330 kv current transformer lvb imt 40 5 550 kv current transformer lvqb. 7 2 external disturbances on capacitor voltage transformers 89 7 3 mechanical stress on capacitor voltage transformers 90 7 4 seismic properties of abb s capacitor voltage transformers 92 8. Current transformers cable type kolma are suitable for the measurement of the sum of three phase currents in a 3 phase cable.

A current transformer without primary conductor and primary insulation of its own which can be mounted over an insulated cable or an insulated busbar. With abb s accurange current transformers hidden power at the low end of the range is detected and measured while mid range power is more finely metered for its true value. Abb library is a web tool for searching for documents related to abb products and. Current transformers cable type kokm are suitable for measuring of phase currents in medium voltage switchgear.

Utilities can collect additional revenue without having to increase rates per kilowatt hours simply by improving the range and accuracy of metering. A current transformer without primary conductor but with primary insulation of its own which can be used as a bushing. Current and voltage measurements from 0 6 kv to 48 kv for the protection and monitoring of medium voltage power systems. Kolma is usually used together with earth fault protection relay.

Indoor ct bar primary bushing. The range of electric values in power supply systems is very extensive. Medium voltage indoor current transformers support post type tpu are cast in epoxy resin and are designed for insulation voltages up to 36 kv 40 5 kv. This is why it is necessary to match the respective currents and voltages to the values appropriate to connected measuring protection and control.

Medium voltage products and systems. Use and maintenance of current and voltage instrument transformers. Current transformer imb 36 800 kv current transformer tg 72 5 800 kv current transformers type pa. Abb s accurange current transformer portfolio offers low and medium voltage high accuracy extended range transformers for secondary and primary revenue metering applications.

The indoor dry type transformers are arranged to act as a support for the conductor in the primary circuit. Free standing fiber optic current sensor focs fs for digital substations.