GE MVTP31V1CB0751E Buswire Supervision Relay

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MVTP31V1CB0751E Specifications

MVTP31V1CB0751E Description

The MVTP31V1CB0751E is a Type MVTP 31 three-phase buswire supervision relay manufactured by GE Grid Solutions. It is a monitoring device used to ensure the integrity of busbar and restricted earth fault protection schemes in high impedance type busbar protection applications. MVTP31V1CB0751E provide continuous supervision of the buswires in high impedance type protection schemes, detecting open-circuited buswires as well as open-circuited current transformers. In earth-fault only protection schemes, the single-phase relay is employed. MVTP relays have a setting range of 1-16 V, adjusted by means of DIL switches on the front panel. Relays are continuously rated at 600 V rms and no external components 
required. The AC voltage input is continuously monitored and when it exceeds the level pre-set means of the plug setting, the output relay is actuated after a three or ten second delay.
The hand reset contacts of the output relay are normally connected across the buswires 
the busbar protection thus short-circuiting the busbar protection relay and rendering 
protection of the zone concerned inoperative. On the same output relay are hand reset contacts for alarm purposes. Operation of the relay is indicated by a hand resettable mechanical flag.

MVTP31V1CB0751E Alternative names

MVTP31V1CB0751E FAQ

What is the primary function of the MVTP31V1CB0751E relay?

The MVTP31 is a buswire supervision relay used in high impedance busbar protection schemes. It continuously monitors the buswires and main current transformers for open-circuit conditions, ensuring the integrity and availability of the protection scheme.

What is the voltage setting range of the MVTP31V1CB0751E?

The relay has a setting range of 1 to 16 V rms, adjustable in 1 V steps using DIL switches on the front panel.

What is the thermal rating of the MVTP31V1CB0751E relay?

The relay is continuously rated at 600 V rms per phase on all three phases simultaneously. It can withstand 2 kV rms per phase for 3 seconds on all three phases simultaneously.

What operating time delays are available?

The operating time delay is fixed at either 3 seconds or 10 seconds , selectable based on the configuration.

Does the MVTP31V1CB0751E require external resistors?

No. The MVTP relay requires no external components or resistors, simplifying installation and reducing panel space requirements.