Beckwith Electric M‑2001C Tap Changer Control

The Beckwith Electric M‑2001C is an advanced microprocessor‑based tap changer control designed for automatic voltage regulation of power transformers and distribution regulators. It builds upon the M‑2001B with enhanced processing power, additional I/O, and more flexible communication options. The control maintains the transformer output voltage within a programmed band by issuing raise/lower commands to the tap changer motor drive.

Key features include programmable voltage setpoints, adjustable time delays, line‑drop compensation, and reverse power inhibition. The M‑2001C also supports multiple setting groups, allowing easy adaptation to changing system conditions.

Key Features

• Voltage regulation accuracy: ±0.5%

• Adjustable bandwidth: 0.5–10%

• Line‑drop compensation with adjustable R and X settings

• Programmable time delays (1–300 s)

• Tap position monitoring and alarms

• Dual communication ports: RS‑232 and RS‑485 (Modbus, DNP3)

• Front‑panel keypad and large graphical display

• Event logging with timestamp

Technical Specifications

Input: 120/240 VAC, 50/60 Hz; PT input: 120 VAC; power consumption: < 25 VA; output relays: 4 programmable (raise, lower, alarm, trip); operating temperature: -20°C to +70°C; enclosure: IP40; dimensions: 150 x 120 x 70 mm.

Applications

Used in substation transformers, industrial power systems, and renewable energy plants. The M‑2001C ensures stable voltage supply, reducing losses and improving equipment life.

Installation and Configuration

Mount the control near the transformer tap changer. Connect PT sensing and motor control wiring. Use the front‑panel or PC software (BESTCOMS) to configure setpoints, logic, and communication.

Reliability and Maintenance

Self‑diagnostic features and surge protection ensure high reliability. Regular calibration and functional testing are recommended.

Why Choose the M‑2001C?

This control offers a perfect balance of performance and flexibility, making it suitable for both new and retrofit transformer installations. Beckwith Electric’s support and documentation ensure smooth implementation.

In summary, the Beckwith Electric M‑2001C provides sophisticated voltage regulation with advanced control and monitoring capabilities.