VESDA-E Power Supply Units are uniquely designed to complement the style and appearance of VESDA-E aspirating smoke detectors (ASDs) and are technically matched to provide sufficient current and battery charging capacity to meet the requirement of EN 54-4.
The STX variants are VdS certified and CE marked to EN54-4 so are particularly suitable for use in territories where these approvals are required.
The VPS-250-STX are the deeper units in the range, allowing for larger batteries.
The internal charger is EN 54-4 certified and is rated to provide a 3A continuous 24Vdc supply. There is space for up to 24Ah batteries (not provided). The PSU is suitable for the VEP and VES range of detectors where larger batteries or longer standby times are required.
The unit also provides a non-certified setting which enables it to power loads up to 3.4A
while recharging batteries up to 24Ah in accordance with EN 54-4.