Modular & Convection Cooled Battery Charger

OPUS C DC power systems are robust, free convection cooled, N+1 redundant backup power solutions for critical infrastructure applications such as transmission and distribution substations, process industries and telecommunications.The OPUS C 7U 19″ rack-mount power system are configured to customer specifications utilizing OPUS C standard building blocks consisting of the MRC series rectifiers, VIDI+ controllers, mains and battery connections, and a wide selection of load distribution options. OPUS C systems are available in 24, 48, 60, 110, 125 and 220 VDC standard output variants and have a max output power of 4.8 kW (3.3 kW for 24 VDC models).

The systems meet IEC 60950-1 safety standards and the following EMC standards: Emissions: IEC/EN 61000-6-4, Immunity: IEC/EN 61000-6-2, Harmonics: IEC/EN 61000-3-2, and Voltage Fluctuations & Flicker: IEC/EN 61000-3-3.

The OPUS system can be connected to 3-phase TN, TT or IT power distribution systems. The nominal operating voltage of the system is 3*230/400 Vac, 50 Hz. With respect to other installation alternatives, please contact our sales or technical service. The installation location should fulfill the following requirements:

  • The operating ambient temperature range is -20°C to +40°C
  • The storage ambient temperature range is -45°C to +70°C
  • Relative humidity 5…95%, no condensation
  • Maximum altitude is 2000 m above sea level
  • Ventilation air shall not contain any corrosive substances, dissolving agents nor significant amount of dust etc.

Case Study

Modular & Redundant Battery Chargers for Six Electrical Substations In Bangladesh

Features of CAB 716 

  • 48VDC Dual 3.2kW battery charger in a 45U 600mm W x 600mm D cabinet
  • Two 230VAC Mains Input Connections
  • Float Voltage of 56.8VDC configured for NiCd batteries
  • Single DC Distribution with 10 x 10A 2P load breakers with Auxiliary switches
  • Configured for redundancy by two +P95 blocking diodes
  •  Two 100A 2P Battery MCB’s, one for each battery
  • Temperature sensor with temperature compensation
  • A Low Voltage Disconnect set at 40VDC for each charger
  • End customer: Power grid company in Bangladesh
  • SNMP


ModelPower Out Max (kW)Input Voltage (VAC)Output Voltage Range (VDC)Output Current Max (A)
OPUS C 110 4.8 R 7U F4.8180 – 27597 – 13272
OPUS C 220 4.8 R 7U F4.8180 – 275189 – 26536
OPUS C 24 3.3 R 7U F3.3180 – 27521 – 31229
OPUS C 48 4.8 R 7U F4.8180 – 27542 – 58164
OPUS C 60 4.8 R 7U F4.8180 – 27551 – 72134


AC-connection3W + N + PE
Nominal voltage230 / 400 VAC
Range, full180 – 275 VAC
Range, reduced140 – 180 VAC
Frequency45 to 65 Hz
Internal protection16 A MCB / rectifier module
Mains terminalTerminal blocks 10 mm2
CoolingNatural convection
ProtectionIP 20
Option IP21
Controller user interfaceDisplay and local control in front panel
Distribution and ConnectionsBehind front panel
ColourFrame RAL 7012
Dimensions, rack mountingHeight 311 mm
Width 438 mm
Depth 451 mm
Dimensions, Wall mounting + IP21Height 350 mm
Width 482 mm
Depth 503 mm
Operating temperature-20°C … +45°C
Humidity max95% relative humidity, non-condensing
Altitude max2000 m above sea level
SafetyIEC/EN 60950-1
EMCEmissions: IEC/EN 61000-6-4
Immunity: IEC/EN 61000-6-2 Harmonic currents IEC/EN 61000-3-2 Voltage fluctuation & flicker:
IEC/EN 61000-3-3

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