In substations, switchyards and power plants the dry-contact signals arriving from protection relays, transformer protection devices, DC systems and auxiliary equipment are collected on the annunciator panel. When an alarm occurs the relevant window flashes and the horn sounds; once the operator acknowledges it the light becomes steady, and when the fault is cleared it is extinguished with reset. This behaviour is configured according to ISA 18.1 alarm sequences.
Channel options
8-window annunciator
8 independent dry-contact inputs and 8 lit windows. Suitable for small switching stations, generator panels, pump stations and compact auxiliary systems. Mounted on the panel door in a 4×2 or 8×1 window layout.
16-window annunciator
16 independent dry-contact inputs and 16 lit windows. Suitable for substations, substation automation projects and multi-feeder switchyards. A 4×4 or 8×2 layout can be selected, and several panels can be placed side by side to increase channel count.
General specification
- Input type
- Dry contact (NO / NC selectable), potential-free
- Power supply
- 24 / 48 / 110 / 220 VDC or 220 VAC options
- Indication
- Long-life LED illumination behind a writable window
- Audible alarm
- Internal horn; external horn output available
- Control buttons
- Acknowledge · Reset · Test / lamp test
- Alarm sequence
- ISA 18.1 (F1A, F2A, F3A etc.) — per project specification
- Relay output
- Common alarm output, transferable to an RTU or SCADA system
- Mounting
- Flush panel-door mounting; can be integrated into a protection and control cubicle
Where it is used
- Substation protection and control cubicles
- Switchyard auxiliary systems
- Generator and motor control panels
- DC supply and rectifier systems
- Water intake and pump stations
- Industrial process plants