RMU Battery Charger

Introduction : RMU battery charger (24V) is specially design for switch gear unit. It provides power to switch gear motor without any interruption. The system gets operating supply from Charger 1, Charger 2 and Battery. Both the Charger Outputs are combined through a suitably rated Blocking Diode. This final output is given to the Battery as well as for Load through the Controller Card. If there is any failure in Charger 1, Charger 2 will take care of Battery Charging process and the Entire Load. During Mains Failure/ Failure in Both the Chargers, Battery will take care of Entire Load. So Failure in any One/Two Power sources (Charger 1, Charger 2 & Battery), the alternate source will take all the Load, and also ensures Bumpless switching between the sources. This system consists of mainly three parts. They are :
 1. Redundant Battery Chargers.
 2. 24V Battery.
 3. Controller Card.


TECHNICAL SPECIFICATIONS :
  •  1.Battery Voltage: 24 VDC
  •  2.Battery Capacity: 12 Ah at 20 hour discharge rate
  •  3.Battery Charger Module Rating: 10A continuous per charger (Two 5A Power Supplies are connected in parallel)
  •  4.Battery Charging Type: CC, CV
  •  5.Battery Charger Cooling: Natural Air with air ventilation louvers on metal enclosure.
  •  6.Battery Charger O/P Regulation: +/- 2%.
  •  7.Battery Charger Output Ripple: 1% rms.
  •  8.AC Input Power: 170 to 285 VAC, 1 Phase, 50 Hz. +/- 5%
  •  9.Built in Charger Protections :
    a) Output Over Load.
    b) Output Short Circuit.
    c) Input Over Voltage (above 320V RMS for short duration)
  •  10. Visual Indications: a) MCU Faulty
    b) Charger 1 Fail
    c) Charger 2 Fail
    d) Battery Low/Battery Reverse
    e) Mains On
  •  11.Input Short Circuit Level: 10 KA
  •  12.Input Side Insulation Withstand : 1500 VAC for 1 minute.
  •  13.Input Side Insulation Resistance: 10M. Minimum measured with 500 VDC Megger.
  •  14.Cable Termination: Pluggable type, to accommodate up to 2.5 mm² wire.
  •  15.Remote Indication Relay: a) Battery Low/MCU Faulty (Potential Free Contact)
    b) Charger 1 Fail (Potential Free Contact)
    c) Charger 2 Fail (Potential Free Contact).

VISUAL INDICATION :
There are 6 Visuals Indication.
Visual Indication Descriptions:
  •  1. MCU Faulty (Red Led): This will blink whenever the control section malfunctions or controller gets hang.
  •  2. Charger 1 Fail (Red Led): This will glow whenever the Charger 1 output fails/falls below its threshold level.
  •  3. Charger 2 Fail (Red Led): This will glow whenever the Charger 2 Output Fails/Falls below its threshold level.
  •  4. Battery Low/Battery Reverse (Red Led): This will glow whenever the Battery Voltage falls below the threshold level/Battery is been disconnected/Battery is been connected in reverse way. During Battery reverse condition, Battery reverse indication in Controller Card will also glow.
  •  5. Main ON (Green Led): This will glow as long as AC input to the system is present.
  •  6. Battery Reverse (Red Led): This will glow in Controller Card whenever Battery connection is reverse.