DTSC-50

The DTSC-50 digital transfer switch controller is an economical controller for open-transition (break before make) automatic transfer switch control for emergency stand-by ap-plications with a single generator. When it detects a utility failure it commands the generator to start and transfers the load to the emergency source. When utility power is restored it performs an open-transition re-transfer and allows the engine to cool-down before stopping. It can be utilized in 1Ph2W, 1Ph3W, 3Ph3W and 3Ph4W Systems.

The DTSC-50 displays voltage and frequency values for each phase, as well as engine hours, maintenance hours and number of transfers. Active alarms are annunciated via the seven segment LED display. Seperate LEDs show breaker status and source availability. Sealed soft-keys enable the user to start the generator and operate the transfer switch manually.

Features

• Open transition transfer
• 6-digit, 7-segment LED for

- display of measuring values (V, f)
- display of counters
- display of alarms

• Configurable trip levels/delays
• Customizable display using paper-strips
• Counters for:

- Operation hours
- Maintenance
- Number of starts
- Number of transfers

• Removable terminal blocks for easy wiring
• Configurable via PC and/or front panel
• Password protection

Protection & Monitoring

• Protection
  Configurable fail and restore limits/timers for:
  - Over / under voltage (ANSI# 59/27)
  - Over / under frequency (ANSI# 81O/U)
  - Voltage balance (ANSI# 47)
  - Phase rotation (ANSI# 47)
  
• Switch monitoring

- Switch position feedback
- Transfer failure

I/O Set

• 1 or 3 phase generator and mains true rms voltage, measuring inputs: rated 480 Vac (max. 600 Vac)
• 2 configurable discrete inputs
• 3 programmable output relays

Certifications / registrations: UL/cUL (pending), CE

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