Transformer Parallel Control Scheme

The 1M122 Transformer Parallel Control System is designed to monitor & control the tap changers of up to four (4) transformers connected on a common bus & operating in a MASTER FOLLOWER control configuration. The tap position of each transformer is monitored as well as the raise / lower commands initiated by the selected master voltage regulating relay. Parallel control schemes are available to meet a range of transformer control configurations.

The 1M122A is designed for applications where a separate & identical control cubicle is required for each transformer. Any transformer may be selected as INDEPENDENT, MASTER or FOLLOWER.

The 1M122D is designed for applications where a central control cubicle is required to operate 4 transformers in 2 parallel groups.

These systems are supplied fully wired in 19” sub rack frames ready for integration into customer panels.

Features

          SYSTEM FEATURES

• Simple system wiring

• Scaleable up to 4 transformers

• Flexible control configuration et transformers in any combination of:

1. INDEPENDENT control

2. Parallel FOLLOWER

3. Parallel MASTER

4. OFF

5. Manual LOCAL control

6. Manual REMOTE control

• All standard uMATRIX features

• Size 4M case

• Made in Australia

   

  CONTROL MONITORING

• Tap change out of step alarm

   

  DATA DISPLAY

• Tap raise & lower events

• Tap position indicator input for up to four (4) transformer tap changers

• Reference tap position indicator output

• Transformer "In Step" status

   

  COMMUNICATION

• Optical isolated RS232 PC link

• Non platform specific PC programming software
• Optical isolated RS485 or RS232 network port
• MODBUS RTU compatible network protocol