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Protection Relays - MELPRO-A Series

Protection Relays - MELPRO-A Series

Made for reliability, the MELPRO-A Series.

Protection relays for high voltage power distribution systems. The MELPRO-A line-up offers the necessary equipment for power distribution system facilities. The MELPRO-A Series are also suitable for renewals as they are compatible with our earlier models and make design change simple. The removable unit makes maintenance easy and safe.

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Overcurrent Relay

With 4 kinds of operating time characteristics installed, examining the protection coordination in new facilities and updated existing facilities is easy with this overcurrent relay.

MELPRO-A Series Overcurrent Relay

Earth Fault Directional Relay

With the Io/Vo measurement indicator it is possible to make suitable settings. The fault recording function makes it possible to investigate the cause of fault at an early stage. The product line up offers applicable relays for ZVT or EVT systems.

MELPRO-A Series Earth Fault Directional Relay

Earth Fault Overcurrent Relay

The operating time is equipped with an instantaneous setting. Protection coordination is easy with this earth fault overcurrent relay.

MELPRO-A Series Earth Fault Overcurrent Relay

Under Voltage Relay

A single phase detecting under voltage relay. As power is derived from VT secondary voltage, an auxiliary power supply is not necessary.

MELPRO-A Series Under Voltage Relay

Over Voltage Relay

A single phase detecting over voltage relay. As power is derived from VT secondary voltage, an auxiliary power supply is not necessary.

MELPRO-A Series Over Voltage Relay

Earth Fault Overvoltage Relay

A highly sensitive Earth fault overvoltage relay that makes it possible to detect low voltages. The product line up offers applicable relays for ZVT or EVT systems.

MELPRO-A Series Earth Fault Overvoltage Relay