Digital Tapchanger Control for Transformers and Regulators

Beckwith’s Tapchanger Control line uses an innovative concept in new transformer or regulator applications or control replacements by using a universal tapchanger control – the M-2001 – with interchangeable adapter panels. The replacement panels are sized to correspond to the original manufacturer’s controls, use the same mountings, and include wire harnesses that match the existing connections – all for easy replacements.

The M-2001’s easy installation, its comprehensive communication capabilities and its variety of features that meet all types of applications have made this control very popular in the industry.

  • LTC transformer, substation regulator, and line regulator control provides reliable operation with expanded capabilities
  • Adapter panels to retrofit popular industry tapchanger controls
  • USB Communications Port for quick field‑updatable programming
  • Smart Reverse Power detection/operation with VT configuration for source and load sides
  • Demand metering/Data Logging with Date/Time Stamp (Single/Three‑Phase)
  • Harmonic Analysis
  • LDC with R & X or Z‑compensation
  • SCAMP (SCADA Controllable Auto/Manual Pushbutton) Adapter Panel Auto/Manual Switch State can be changed by a SCADA command
  • Sequence of Events Recording
  • SCADA HeartBeat
  • Smart Flash SD Card
  • Source PT Voltage Input
  • CBEMA Monitoring
  • Cyber Security – Comprehensive cyber security tools to implement NERC CIP requirements, including IPsec and RADIUS server security
  • VAr Bias for downstream coordination with capacitor controls
  • Tap position knowledge by four KeepTrack™ methods
  • Transformer paralleling by circulating current, Master/Follower (peer to peer) circuitry, or ∆VAR® methods
  • LCD display (rated ‑20 to +70 degrees Celsius) or Vacuum Fluorescent display optionally available (rated ‑40 to +80 degrees Celsius)
  • Optional Control Power Backup Input for Fiber Optic communication loop‑through
  • DNP3.0, MODBUS® and IEC 61850 Communications Protocols available
  • Optional Ethernet RJ45 or Fiber Optic Ethernet


M-2001 Adapter Panels
Adapter panels to retrofit popular industry tapchanger controls.

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