BTU by PES
Build
4–6 weeks
Battery tripping units, designed and made by PES in Leeds. A BTU holds DC supply to the protection and trip circuits of HV switchgear when the mains supply fails. Sized for the panel and the duty. Certificates and an O&M manual go out with the unit. 12 months warranty.
Available at 24V, 30V, 50V and 110V, from 5Ah up to 250Ah. Larger 110V capacities built to order.
Four-stage charging with automatic boost. Built-in battery health checks and automatic self-test. Backlit LCD with alarm indication. IP65 enclosure.
Protection as standard: short circuit, over-temperature, DC over-voltage, AC over and under voltage, DC over-current, and reverse polarity with auto-recovery. Volt-free charge fail contacts on every unit.
Options: PT1000 battery temperature compensation. Volt-free mains-failure contacts. Remote monitoring by GSM auto-dialler. Remote display up to 1.2km from the charger.
Efficiency above 86% on 24V and 30V units, above 94% on 50V and 110V units. Input 90 to 305V AC at 48 to 64Hz on 24V and 30V units, 184 to 264V AC at 47 to 63Hz on 50V and 110V units. Charger operating temperature −30°C to +70°C.
Each unit goes through a full discharge and recharge test on calibrated equipment before dispatch.
Extended warranty available. Generally built to order. Some units held in stock, subject to availability. To buy or hire.