Beckwith Electric M‑2001D‑6L4S20C0S0X Tap Changer Control
The Beckwith Electric M‑2001D is the latest generation of microprocessor‑based tap changer controls, offering advanced voltage regulation for power transformers and distribution regulators. The specific configuration 6L4S20C0S0X includes six analog inputs, four binary inputs, two outputs, and advanced communication options. This control provides precise automatic voltage regulation with programmable setpoints, multiple time delays, and load drop compensation.
It also includes features like reverse power inhibition, voltage reduction for peak shaving, and comprehensive alarm functions. The M‑2001D supports dual Ethernet, Modbus TCP, DNP3, and IEC 61850 for seamless integration into smart grid environments.
Key Features
Voltage regulation accuracy: ±0.25%
Adjustable bandwidth: 0.5–10%
Line‑drop compensation with R and X settings
Multiple setting groups (up to 8)
Programmable logic with math functions
Communication: dual Ethernet, RS‑485, IRIG‑B
Large colour touchscreen display (optional)
Event and fault recording
Technical Specifications
Input: 120/240 VAC, 50/60 Hz; PT input: 120 VAC; power consumption: < 30 VA; output relays: 4 x SPDT (raise, lower, alarm, trip); operating temperature: -25°C to +70°C; dimensions: 180 x 140 x 80 mm.
Applications
Used in large power transformers, substations, and industrial voltage regulation schemes. The control is suitable for both new installations and retrofits.
Installation and Configuration
Mount the control in a panel near the tap changer. Connect all sensing and control wiring. Use the front‑panel interface or PC software for configuration. The control includes a user‑friendly setup wizard.
Reliability and Maintenance
Designed for high reliability with self‑diagnostics, redundant power inputs, and surge protection. Periodic calibration and functional testing are recommended.
Why Choose the M‑2001D?
This control offers state‑of‑the‑art voltage regulation with unparalleled flexibility, making it ideal for modern smart grid applications. Beckwith Electric’s expertise ensures long‑term performance and support.
In summary, the Beckwith Electric M‑2001D‑6L4S20C0S0X provides advanced, reliable, and flexible tap changer control for demanding power system environments.




