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BN-12 Uninterruptible Power Supply System
48(24) V DC uninterruptible supply system for measurement, protection, control equipment and switching devices.
The BN-12 power-supply system is intended for measurement, protection and control equipment and switching devices. It can be installed in a standalone cabinet or on a mounting plate, and consists of a rectifier/charger, high-frequency voltage converter, battery blocks and automatic circuit breakers.
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Mains or battery operation
During normal operation the system supplies loads and charges the batteries from 230 V AC; after a mains failure the batteries maintain supply.
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NBO and SPMO installation variants
Variants are available with batteries on the mounting plate or with batteries installed separately.
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DC distribution with circuit breakers
The DC distribution includes circuit breakers for battery and feeder protection.
- Voltage
- 230 V AC +10% / -15%, 50 Hz
- Protection
- 6 A automatic circuit breaker, EMI filter
- Voltage with 230 V AC present
- 54.4(27.2) V ±1%
- Battery voltage range
- 42-52(21-26) V
- Ripple
- <0.5%
- Rectifier rated power
- 150 W
- Output current
- 2.8 A from rectifier; 18(30) A with connected batteries
- Batteries
- 4(2) blocks of 12 V / 7, 9 or 28 Ah, dryfit
- Number of feeders
- 1
- Temperature range
- -25 to +55 °C
- Dimensions
- 335 x 355 x 175 mm plate for NBO; 230 x 200 x 110 mm plate for SPMO; 380 x 380 x 210 mm cabinet
Input
48(24) V DC output
Battery and distribution
General
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