USP-001-PZ (tap changer controller)
The USP device is designed to monitor the OLTC condition. It is usually installed in a transformer's cubicle. It can work separately or in the scope of the expert monitoring system. Currents and voltages of the OLTC drive supply are acquired by the device as well as the binary signals, which describe the tap changer operation state.
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Exemplary USP-001-PZ device