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MajorTHS Telecom Power System
up to 120 Amps With 30-Amp Rectifiers

MajorTHS Power System offers up to 120 Amps at 48 VDC using 30-Amp Rectifiers or 200 Amps at +24 VDC using 50-Amp Rectifiers. MajorTHS Power System may be equipped with up to four plug-in rectifiers and an Alarm Unit to provide alarms and comprehensive system control.

MajorTHS Power System combines a compact, modular design with state-of-the-art technology, and standard, intelligent power features: temperature compensation, voltage control, and remote access.
MajorTHS Brochure Download
  MajorTHS30/48-RECT
MajorTHS Power Shelf Features
  • Compact Power Plant
    • Decreases the footprint over traditional power systems.
    • Increased power density and design flexibility allow the system to grow with up to four modules in one shelf measuring 5.25" High by 14" Deep in a standard 19" rack (3U).
  • Cost Savings
    • Modular design allows for quick installation and maintenance, reducing operation costs. Active power correction assures the MajorTHS120/48-3U operates with optimum AC power efficency, lowering overall utility costs.
  • Uninterrupted Operation
    • Rectifier modules may be added to the system without interruption of service. Plug-in rectifiers enable system's growth without the need for wiring.
    • A true "plug and play" system management tools over internet/intranet environments.
  • Reliable
    • Designed using state-of-the-art technology, stringent quality contol and rigorous system testing.
  • Remote Management
    • Equipped with RS-232 direct connect/modem and RJ-45 Web Interfaces for local or remote monitoring and control.
  • Hot Swappable
    • 1800 Watt (-48 VDC) / 1500 Watt (+24 VDC) rectifiers with wide range PFC input
  • Front Access
  • High Power Density in N+1 Configuration
  • Equalize Charge Timer
  • User-Friendly Operation Interface
  • RJ-45 Remote Management Web Server Function
  • Wide Operating Temperature Range
    • 32° to 122°F (0° to 50°C)
  • UL/cUL, TUV/CE Approvals
    •

MajorTHS System Specifications
MajorTHS Power Shelf
AC Input 1Ø, 90 - 275 VAC, single-phase
System Max. Capacity 48 V: -48 V / 30 Amps to 120 Amps (1 to 4 Rectifiers)
24 V: +24 V / 50 Amps to 200 Amps (1 to 4 Rectifiers)
Emission Conducted and Radiated (CISPR 22 Class B)
Operating Temperature 32°F to 122°F (0°C to +50°C)
Storage Temperature -40°F to +158°F (-40°C to +85°C )
Humidity 0 - 95% Relative Humidity, Non-Condensing
Altitude -500 to +10,000ft
Dimensions 19"W x 5.25"H x 14"D (482.6 x 133.4 x 356 mm)
Safety UL/CUL Approved

The MajorTHS Rectifier Module operates from a nominal 200/208/240 VAC source and provides 30 Amps at -48 VDC and 50 Amps at +24 VDC over a temperature range of 0°C to +50°C.

The MajorTHS Rectifier Module provides highly regulated, low noise power. A shelf can provide from 30 to 120 Amps at -48 V power shelf and 50 to 200 Amps at +24 V power shelf, growing from one to four rectifiers.

MajorTHS Rectifier Module Specifications
Input MajorTHS30/48-RECT MajorTHS50/24-RECT
Input Voltage 176 VAC - 275 VAC, single phase
150 VAC - 176 VAC: Derated to 80% Load
90 VAC - 150 VAC: Derated to 50% Load
Input Current <12 Amps (Low Line Input. Full-Load)
Line Frequency 45 - 65 Hz
Power Factor >0.99, 220 VAC (Full-Load)
THD <5%, 220 VAC (Full-Load)
Efficiency >90% @ Full Load, 220 VAC >88% @ Full Load, 220 VAC
Inrush Current <12 Amps (peak), Nominal Input, Full-Load, Cold Start
Start Time Delay (Walk-in) 3 - 10 Seconds
Protection Fuse
Output
DC Output Voltage 40 - 60 VDC 20 - 29 VDC
Output Power 1800 Watts: (0°C to +50°C)
1500 Watts: (0°C to +65°C) 		1500 Watts: (0°C to +50°C)
1200 Watts: (0°C to +65°C)
Regulation Load: <±0.5% (Load 0 - 100%); Line: <±0.1% (Load 0 - 100%)
Current Limit <110% of rated Output Current
Noise Audio Band: <2mV CCITT
Wide Band: <20mVrms (10 Khz - 100 MHz)
Acoustic: <55dBA @ 1M
Temperature Coefficient <200ppm / °C
Current Sharing <5% of Rated Output Current
Protection Fuse
Protection
AC Input Voltage High Automatic Shutdown and Recovery
AC Input Voltage Low Automatic Shutdown and Recovery
Brown-Out No Damage During Brown Out Conditions
Output Short Automatic Shutdown and Recovery
Output Current Automatic Shutdown and Recovery
High Voltage Shutdown If rectifier module voltage exceeds preset value, module will shut down and latch
Over Temperature Automatic Shutdown and Recovery
Environmental
Current Harmonic EN 61000-3-2/A12, EN 60555-2, IEC 1000-3-2 Class A
Voltage Fluctuation EN 61000-3-3, EN 60555-3
Electrostatic Discharge EN 61000-4-2, IEC 1000-4-2,
IEC 801-2 Level 4, 15KV Air Discharge, 8KV Constant Discharge
Radiated Susceptibility IEC 1000-4-3, IEC 801-3 Level 3, 10V/m
Electrical Fast Transients EN 61000-4-4, IEC 1000-4-4, IEC 801-4 Level 4, 4KV
Conducted Susceptibility IEC 1000-4-6 Level 3, 10V/m
Lightning/Surge ANSI/IEEE C62.41-1991 B3, IEC 1000-4-5 Level Special (6KV)
Status/Alarm Indicators
AC ON Green LED
Rectifier Failure Alarm (RFA) Red LED
Current Limit (CL) YellowLED
Adjustments
Current Limit (CL) Setting from System Controller (SMR or CSU)
Float Voltage (FLO) Setting from System Controller (SMR or CSU)
Test Points (I+,I-) Output Current Test
Remote Control Emergency Shut Down, Float / Equalize Mode, Current Limit
Physical
Dimensions 3.3"W x 5.2"H x 10.35"D (84 x 132 x 263mm)
Weight 7.26 lbs / 3.3 kg
Cooling Fan Cooling
Heat Dissipation 682 BTU / Hour Max. Per Module 698 BTU / Hour Max. Per Module
Approvals
Safety UL / cUL (Meets IEC 950), TUV / CE (Meets EN 60950) Approvals
MTBF >150K Hours

The MajorTHS Power Shelf is equipped with both an RS-232 direct connect/modem and RJ-45Web Interfaces for local or remote monitoring and control. This functionality offers powerful system management tools over Internet/Intranet environments.

The MajorTHS Alarm Unit provides output alarms, voltage control, temperature compensation, equalize charge timer and alarm LEDs.

MajorTHS Alarm Unit Features
  • 7-segment LED Display
  • Temperature compensation voltage control
  • Equalize charge timer
  • User friendly operation interface
  • RJ45 remote management web server function
  • System Status; System Capacity
  • Windows Setting, Easy Using
  • Operation Web Server Type --Internet
  • Operation RMS (Remote Monitoring System) -- Computer / Phone Line
  • UL/CUL approvals
    •
MajorTHS Alarm Unit Specifications
Input Voltage
Input Voltage Range 20 VDC - 59.5 VDC
Input Current 0.6 Amps (maximum)
LED Indicator
7-Segment LED Display DC Output Voltage and Current
Alarm LED Float Charge; Equalize Charge; High Voltage Alarm; Low Voltage Alarm; Major; Minor; High Voltage Shutdown; AC Fail
Parameters & Controls
Settings High Voltage Shutdown (HVSD); DC High Voltage; DC Low Voltage; AC High Voltage; AC Low Voltage; Site ID; Float/Equalize Voltage; HVSD Reset
Relay Output Communication
Relay Output AC Fail Alarm; Major Alarm; Minor Alarm; Fuse Blown (BREAKER TRIP); HVSD Alarm; High Voltage Alarm; Low Voltage Alarm; LVDS Open Alarm
Remote Monitoring & Control
RS232 Interface By RMS Software (Use RS232 Interface)
LAN Interface (RJ-45) By Web Server (Optional)
Physical & Standards
ESD IEC 1000-42 (Contact 4 kVA, Air 8 kVA)
Dimensions 1.86"W x 5.2"H x 9.5"D / 47 x 132 x 242mm
Weight 4.4 lbs / 2 kg
Custom Application - Contact MajorPower.Com
 
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