Commander II/II+ DC Power System

The Newmar Commander II/II+ DC Power System, -48V, offers high functionality, scalability, and web monitoring. The Commander II is a 6 RU, -48V unit and the Commander II+ is a 7 RU unit with -48 Volt + 12 or 24V DC. 

This complete system design and integration, by Newmar, can be modified to your requirements, including rectifier configuration, installation of distribution circuit breakers, and configuration of alarms and monitors. Assembly in a relay rack with batteries and wiring is also available.

Newmar Commander II/II+ Features

• 19 in., 6U or 7U rack mount shelf with integrated power distribution
• 90-250 VAC input, Power Factor Corrected
• 12 power bays accept 3000 watt, -48V modular rectifiers
• 667 amp, 36,000 watt total max. output capacity @ – 54 VDC
• Output temperature compensated for precise battery charging
• 18 DC circuit breaker distribution capacity, with tripped breaker alarm, 63 amp max. circuit breaker rating
• Master battery disconnect breakers for four battery strings, with tripped breaker alarm, 4 x 125 Amp
• Controller with digital display of system parameters with TCP/IP interface and SNMP monitoring/logging
• Alarm contacts monitor major system functions and dry contacts for user programmable alarms
• General Purpose Digital Inputs for user configured external alarms
• Low voltage disconnect built-in
• Easily configures to meet site power requirements
• Up to 4 x 560 watt DC–DC converters (Commander II+2)

Newmar Commander II/II+ Specifications

AC Input
Nominal: 230V
Voltage Range: 85-300 VAC (reduced power below 190V)
Wiring Options: Three two wire Single Phase 208-240VAC
Frequency Range: 45-65 Hz
Power Factor: >0.99
Efficiency: >96.3% (peak)

DC Output
Output Ratings: Constant power output from 43V to 60V
Nominal Voltage: 48V
Rated Voltage: 54V (Factory default)

Power
Rated maximum System Output Power: 36,000W @ -54.0V (667 Amps), 720 A @ 48V
Polarity: Positive Earth (or specify)

DC Distribution
Load: 18 breaker position capacity, available amperages (specify) 6A, 10A, 16A, 20A, 25A, 32A, 40A, 50 and 63A tripped breaker alarm
Battery: 4 x 125A battery circuit breakers
Breaker Fail Detection: Electronic fail detection on both load and battery breakers
Low Voltage Battery Disconnect: 500A battery LVD installed standard, with disconnect alarm

Dimensions
Shelf Dimensions: Commander II 19″ W x 10.5″ H x 15.0″ D
Shelf Dimensions: Commander II+ 19″ W x 12.25″ H x 15.0″ D
Weight, Unit: 35.15 lbs. (excluding modules)
Weight, Rectifier: 3.3 lbs.
Rectifier Dimensions: 4.39″ W x 1.73″ W x 11.1″ D
Cooling: Forced cooled, front to rear

Environmental
Ambient Temperature: Nominal: 25+/-5˚ C
Range: -20˚ C to +70˚ C (maximum output power is derated above +45˚ C)
Humidity: 5-95% RH (non-condensing)
Altitude: <2000m (<6562 ft).

For more in-depth specifications, see the data sheet.