Beckwith Electric M‑2001B Series TapChanger Control (M‑2001B‑C2)
The Beckwith Electric M‑2001B is a microprocessor‑based tap changer control designed for voltage regulation of power transformers and voltage regulators. The M‑2001B‑C2 is a specific configuration with advanced communication and I/O options. It monitors the transformer secondary voltage and issues raise/lower commands to the tap changer mechanism to maintain voltage within a programmed band.
This control features programmable setpoints, time delays, and line‑drop compensation. It also includes protective functions such as voltage limit alarms and tap changer position monitoring. The M‑2001B supports both RS‑232 and RS‑485 communication, allowing remote monitoring and control.
Key Features
Voltage regulation: ±0.5% accuracy
Adjustable bandwidth: 0.5–10% of nominal
Line‑drop compensation: 0–10%
Time delay: 1–120 s (adjustable)
Tap position indication and limit alarms
Programmable logic for custom control
Communication: Modbus RTU, DNP3
Technical Specifications
Input: 120/240 VAC, 50/60 Hz; voltage sensing: 120 VAC PT; power consumption: < 15 W; output relays: 2 x SPDT (raise/lower); operating temperature: -20°C to +70°C; enclosure: IP40; dimensions: 150 x 100 x 50 mm.
Applications
Used in substation transformers, distribution voltage regulators, and industrial power systems. The control ensures stable voltage supply to loads, reducing energy losses and improving power quality.
Installation and Configuration
Mount the control in a panel near the transformer tap changer. Connect PT sensing leads and control wiring to the motor drive mechanism. Configure setpoints via the front‑panel keypad or PC software. Communication parameters are easily set.
Reliability and Maintenance
The M‑2001B includes self‑diagnostics and surge protection. It is designed for continuous operation. Periodic checks of voltage calibration and tap changer operation are recommended.
Why Choose the M‑2001B?
This tap changer control offers precise voltage regulation with advanced features at a competitive price. Beckwith Electric’s reputation for quality and support makes it a reliable choice.
In summary, the Beckwith Electric M‑2001B‑C2 provides dependable automatic voltage regulation for transformers, enhancing system efficiency and performance.
