15 Enclosed Switching Products 0115 ABB Low Voltage

Functionality

OTM_C3D OTM_C8D

6.1. Features

6.2. Generator start and stop

X

X

6.3. OFF-load test sequence

X

X

6.4. ON-load test sequence

X

X

6.5. Source status via front panel

X

X

6.6. Source status via digital outputs

X

6.7. Switch position via front panel

X

X

6.8. LCD 6)

X

6.9. Fieldbus interface 7)

X

6.10. Event/alarm log

X

6.11. Counter for number of operations

X

6.12. Auxiliary voltage supply 8)

X

6.13. Programmable digital inputs (eight) and digital outputs (six)

X

6.14. Secondary load control (load shedding)

X

6.15. Digital input – Allow transfer to secondary 9)

X

6.16. Digital input - Generator alarm 10)

X

6.17. Digital input - Remote control to positions I, O and II

X

7. Operating mode

7.1. Line priority

X 11)

X 12)

7.2. Manual back-switching 13)

X

X

7.3. Automatic operation to position O, in case of source failure 14)

X

8. Applications

8.1. Transfer between two transformers

X

X

8.2. Transfer between a transformer and a generator

X

X

In the enclosed ATS the dual power source is included

Comments

1) Dual power source allows the motor operator to be supplied by two

separate voltage supplies. This way the motor operator is always energized.

2) Four options: 0, 5, 10 or 30 seconds.

3) Delaying the switching sequence before transferring to generator,

guaranteeing that in cold locations the generator is properly heated up.

4) Two options: the duration of back-switching delay is the same as switching

delay, i.e. the time delay is same for I - II and II - I, or the back-switching

delay is fixed 300 seconds.

5) Two options: the duration of generator stop delay is the same as Switching

delay or fixed 5 min.

6) Menus available in eight languages; English, French, German, Italian,

Spanish, Russian, Chinese and Finnish.

7) Two-way communication, bus communication protocol is Modbus

8) In case of source failure, the controller can be supplied with an external

auxiliary supply with 24…110 V DC.

9) Automatic control unit requires an external signal before allowing the

transfer to secondary.

10) Two options for the operating mode after receiving the alarm: control unit

either works normally, or initiates generator stop with operation to position O.

11) Two options: No line priority, or Source 1 is the priority source.

12) Three options: No line priority, Source 1 or Source 2 is the priority source.

13) Automatic back-switching to primary source is prevented.

14) Automatic control unit and motor operator must be energized.

X = includes as standard

O = as an accessory

Enclosed automatic transfer switches

Controllers technical specification