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Mass Combi Ultra 48/3500-50 (230V) - Inverter / Charger

The Mass Combi Ultra is equipped with the latest technologies. The new inverter technology ensures a uniquely low stand-by use, while an ultra-fast Digital Signal Processor guarantees seamless switching between all available energy sources. Power Assist prevents power dips and failures, even with a weak electricity connection or small generator. Moreover, all Mass Combi Ultra models are equipped with MasterBus. Inverter Continuous Power: 3500 W, Battery Max Charge Current: 50 Amps. More specs below.
Part Number: 38343500           Mastervolt
Reference: 38343500
Reg Price: $3,454.50
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Mastervolt Mass Combi Ultra 48/3500-50 (230V) - Inverter / Charger 

Mastervolt Mass Combi Ultra 48/3500-50 (230V)
The Mass Combi Ultra series comprises several models, varying from 3000 W to 3500 W. For higher capacities up to 35 kW the Combi Ultra can be used in parallel or 3-phase configurations. An efficient and integrated solar charge regulator helps make the most of your solar panels.

The Mass Combi Ultra is equipped with the latest technologies. The new inverter technology ensures a uniquely low stand-by use, while an ultra-fast Digital Signal Processor guarantees seamless switching between all available energy sources. Power Assist prevents power dips and failures, even with a weak electricity connection or small generator. Moreover, all Mass Combi Ultra models are equipped with MasterBus.

Higher Yield From Solar Energy

At Mastervolt we used our knowledge gained in the grid connected solar sector to make a super-efficient built-in MPPT solar charge regulator. Compared to most solar charge regulators on the market, the MPPT offers up to 30 % more yield from solar panels. The solar panels power ‘hidden’ consumers and keep your batteries in optimal condition.

Quiet Operation

The Mass Combi Ultra can provide up to 50 % of the charging current or inverter capacity without fan cooling. This is perfect for night-time operation; if little power is consumed, the fan stops turning and goes silent. When maximum capacity is required, or the ambient temperature is very high, the Active Optima Cooling concept regulates the fan speed in a linear way, ensuring that it never spins too fast or makes any unnecessary ticking noises.

Parallel and 3-Phase Operation

The Mass Combi Ultra functionality goes beyond stand-alone operation, the design also allows parallel and 3-phase configurations for larger applications up to 35 kW. For larger systems, an external transfer system is required.

Dual AC Inputs and Outputs

The Mass Combi Ultra has inputs for generator or mains supply, each optimized for the power source. A robust intelligent transfer system switches seamlessly between AC power, generator and inverter, and ensures a constant power supply. Flickering lights or failure of electronic equipment belong to the past. Separate AC outputs provide the ability to power heavy users via mains and/or generator.

Key Features

  • For professional and semi-professional use.
  • Quiet, powerful inverter with 200 % peak power.
  • Compact, lightweight and hum-free thanks to HF technology.
  • Pure sine wave voltage prevents malfunctions and damage to sensitive equipment such as adapters.
  • High yield and more power from your batteries.
  • Intelligent 3-step+ battery charger with low DC ripple current for fast charging times and long battery life.
  • Power Assist: prevents blown fuses.
  • A dynamic battery voltage window allows you to enjoy AC power for longer without damaging your batteries.
  • Active Optima Cooling concept prevents unnecessary fan noise.
  • Charges two individual battery banks simultaneously.
  • An integrated MPPT solar charge controller allows for 30 % more yield from solar power for charging the batteries.
  • Quick installation and reliable professional connections.
  • CE, ABYC and RMRS certified.

Technical Specifications

Specifications sine wave inverter
Nominal DC voltage 48 V (38-62 V)
Output voltage 180-260 V, adjustable
Output frequency 50/60 Hz (± 0.005 %), configurable
Output waveform true sine
Continuous power at 40 °C / 104 °F, cos phi 1 3500 W
Max. peak load 7000 W
Max. efficiency ≥ 93 %
Max. ripple on DC (battery at full load) < 5 %
No-load power consumption on DC (ON/inverter OFF/OFF) 16 W / 4 W / 0 W
Energy saving mode consumption 7 W
Parallel configuration yes, up to 10 units (for larger systems, an external transfer system is required)
3-Phase configuration yes, up to 3x3
Synchronise with mains/generator yes
Specifications battery charger
Input voltage range 184–275 V
Max. input current 16 A
Max. charge current at 40 °C / 104 °F 50 A at 57 V, adjustable
Secondary charger output voltage 12/24 V selectable
Secondary charger output current 10 A
Battery temperature sensor yes, included
Battery voltage sense through MasterShunt, otherwise automatic compensation
Specifications transfer system
AC input (generator) 50 A (switched)
AC input (mains) 30 A (switched)
AC output 1 67 A
AC output 2 50 A (switched)
AC input fuse no
Transfer speed seamless (< 1 ms)
Transfer voltage range 184-275 V, adjustable
Transfer frequency range 35-68 Hz, adjustable
General specifications
Display/read-out LED display
Dimensions, hxwxd 472 x 318 x 178 mm
18.6 x 12.5 x 7.0 inch
Weight 15.3 kg
33.7 lb
Approvals CE, ABYC, RMRS
Technical specifications
Charge characteristic IUoUo, automatic 3-traps+ voor AGM/Gel/MLI/nat/tractie/spiraal
Recommended battery capacity ~ 100-300 Ah (based on gel batteries, may differ for other types)
Ground relay yes, configurable
Temperature range (ambient temp.) -25 °C to 60 °C, derating > 40 °C
-13 °F to 140 °F
Cooling vario fan
Protection degree IP23 (vertical mounting)
Safety class IEC protection class I
Humidity protection conformal coating, max. 95 % relative humidity, non condensing
Protections over temperature, overload, short circuit, high/low battery voltage
Power Assist yes
MasterBus compatible yes

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