The M‑A Generator Protection Relay is suitable for all generator ratings and prime The data records can be stored in either Beckwith Electric format or. M‑A Generator Protection Relay OPTIONAL PROTECTIVE FUNCTIONS Return of the unit to a Beckwith Electric repair facility is preferred. and you must. Beckwith Electric/ Cat No. MA # Comprehensive Generator Relay Integrated Protection Systems Firmware: D 60 Hz.

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F—24 Comm Access Code Page System Setup and Setpoints — 4 59D Third Harmonic Voltage Differential Ratio third harmonic voltage appearing at the neutral to that which appears at mm generator terminals.

Be the first to review this item Product Warranty: The applications including hydro turbine-generator effect of these capacitors is given by the following and brushless generators is given in Figure Page M series.

Figure 14 20Hz Signal Generator Dimensions —34— Got it, continue to print. If the target pickup setting is a large value 0 to 50, the Preset Accumulator Settings feature can be used to pre-set the accumulator values to just below the target setting. Have one to sell?

V input of the MA relay through a injection bwckwith is not removed when the generator suitable voltage divider, that limits the MA to is taken out of service.

If the Out-of- step swing progresses to impedance Zthe The Out-of-Step function 78 is used to protect the MHO element and the blinder A element will both generator from out-of-step or pole slip conditions. Product details Shipping Weight: Decrease the neutral voltage input to less than P volts. Sensitive Negative Sequence Overcurrent protection and alarm. This feature allows 34225a user to set the relay internal clock.


Reverse power relays should always be applied with a time 32 beckqith DELAY delay in order to prevent mis-operation during power swing Cycles conditions.

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How to Connect to a Beckwith Electric M-3425 Relay

See Function 40, Loss of Field in Chapter beckwitb for additional information. F—26 F Diagnostic Mode 1 of The following is displayed: F—18 Active Setpoint Profile Unit Setup for the relay application. Press the Right arrow pushbutton until the following is displayed: Apply a nominal current input consistent with FigureCurrent Inputs: Page Testing — 6 Directional Test: 3452a should be off-line Brush Lift-Off Detection 64B provides detection and field excitation should be off during the of open brushes of the rotor shaft.

Image Unavailable Image not available for Color: Select Profile allows the user to designate the active profile Figure The accumulation starts after a set time delay estimate of the per-phase wear on the breaker from the trip initiate command to account for the time contacts by measuring and integrating the current it takes for the breaker to start opening its contacts.

The EXIT pushbutton is used to exit from a displayed screen and move up the menu tree.


BECKWITH ELECTRIC M-3425A Instruction Book

Set the phase currents at degrees from the respective phase voltages. Apply current equal to the chosen test level calculated in Step 6 to Phase A Current Input and start timing.

Dimensions in brackets are in centimeters. Circuit Board Switches and Remove the screws that retain the front Jumpers cover. Profile 1 is set to be the Active profile, and all setpoints The individual protective functions, along with their entered.

Placing the M in service with this jumper installed will result in serious damage. Installation requires the cable from the neutral of the VT to generator neutral be insulated for the system line-to-ground voltage.

This screen displays the phase current at the time the target operated. System Setup and Setpoints — 4 60FL VT Fuse Loss A frequency check element is included in the fuse loss detection logic to avoid erroneous alarms Some functions may operate inadvertently when a when the generator is in a start up condition.

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If additional link security is desired, a communication access code can be programmed. System Setup and Setpoints — 4 32 Directional Power power setting is set to Under and a positive pickup setting is chosen.

The unit should display: