Beckwith Electric M-2001D Digital Tapchanger Control

Beckwith Electric M-2001D Digital Tapchanger Control

The Beckwith Electric M-6283A Three Phase Digital Capacitor Bank Control

is a three phase sensing and ganged or optional independent phase

operation complete solution designed for remote capacitor automation,

monitoring, and protection for high voltage utility distribution systems.

It is a universal control offering automatic Voltage, VAr, Current, Time

(seasonality) or Temperature operation with programmable voltage override.

It has full three phase voltage and current sensing and is compatible with

traditional VTs, line post sensors, and multi‑core LPS.

The optional M-2980A Control cabinet offers a wide range of Pole top

mounting options and accessories for communication hardware.

The M-4272 Digital Motor Bus Transfer system provides automatic and manual

transfers of motor bus systems in power plants and industrial processing plants,

to ensure process continuity. For any critical application in which losing power

is unacceptable, the M-4272 seamlessly handles transfer to backup power sources.

It automatically selects fast, in-phase, residual voltage, and fixed time motor bus

transfers, based on system conditions.

It is applicable for both one way and bi-directional manual and automatic transfers

and can be expanded to accommodate multiple breaker configurations.

Additional features of the M-4272 include:

• Multiple setpoint profiles for various application requirements.

• Integrated control, supervisory functions, sequence of events, and oscillograph

recording.

• Extensive commissioning tools, including ringdown analysis.

• Optional M-3919A Graphic Display Unit (GDU) and Touch Screen Human Machin

Interface (HMI) for communicating with one or two M-4272 units.

• Optional M-5072 Retrofit Kit for M-4272 Replacement of M-0272/M-0236B Analog

Transfer Logic Controller.

Intertie Protection M‑3520 Integrated Protection System®

• Integrated Protection System for DER Intertie, providing:

 Loss of parallel utility operation protections

 Abnormal power flow protections

 Comprehensive suite of phase and ground

fault backed protections

 Abnormal operating protections

 Reconnect and Sync Check functions

• Microprocessor-based Intertie Protection Relay integrates

protection, metering, monitoring and waveform capture

• Provides 18 base protective relay functions and

3 optional protective functions

• Local and remote serial communications capabilities, plus

IRIG-B interface

Standard Functions

• Sync check with Phase, ∆V and ∆F with deadline/deadbus options (25)

• Phase undervoltage (27) protection

• Neutral over/undervoltage (59G/27G) protection

• Sensitive dual-setpoint, reverse power detection (32)

• Sensitive negative-sequence overcurrent protection and alarm (46)

• Negative sequence voltage (47)

• Instantaneous overcurrent (50) protection

• Instantaneous neutral overcurrent (50G) protection

• Three-phase inverse time overcurrent (51V) with voltage control/voltage restraint

• Neutral inverse time overcurrent (51G) protection

• Phase overvoltage (59) protection

• Peak overvoltage (59I) protection

• VT fuse-loss detection and blocking (60FL)

• Directional inverse and definite time phase overcurrent (67)

• Directional inverse and definite time neutral overcurrent (67N)

• Reconnect enable (79)

• Over/Underfrequency (81 O/U)

Optional Functions

• Dual-zone phase distance protection for phase fault backup (21)

• Out of Step (78)

• Rate of change of frequency (81R)