UNIPOWER Guardian Access 3U - MS27 DC Power Systems
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The UNIPOWER Guardian Access 3U is a 3RU high 19” rack-mounted, integrated 300 Amp DC power system providing an output of -48VDC. These systems can accommodate up to 5 Guardian family high efficiency hot-swap rectifiers. Alpine Power Systems is an approved distributor of UNIPOWER products.
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The UNIPOWER Guardian Access 3U is a 3RU high 19” rack-mounted, integrated 300 Amp DC power system providing an output of -48VDC. These systems can accommodate up to 5 Guardian family high efficiency hot-swap rectifiers. Alpine Power Systems is an approved distributor of UNIPOWER products. The UNIPOWER Guardian Access 3U - MS27 has a three year warranty.
This 300 Amp DC power system provides a total load current of 200A with battery charge current up to 100A in addition. The rectifiers are internally fan cooled with speed control which is a function of load and temperature, keeping acoustic noise to a minimum.
The DC output circuits can provide up to 13 loads which utilize circuit breakers rated from 4A to 150A plus up to three 80A, 100A or 125A breakers that provide battery protection. A programmable low voltage battery disconnect (LVBD) is available with options of 125A or 200A; while a partial load disconnect (PLD), rated at 125A and also programmable, can provide non-critical load shedding when operating on batteries.
UNIPOWER Guardian Access 3U - MS27 Features & Benefits:
>96% Efficiency Rectifiers
300A / 14.4kW Total Capacity
Remote Monitoring & Control
Intelligent Battery Management
Field Replaceable Controller
Ethernet Comm. with SNMPv3
3 LED Alarm/Status Indicators
Up to 10 Form-C Relay Alarms
Up to 13 Load Breakers
Up to 3 Battery Breakers
LCD Display/Touchpad
Easy Installation
>96% Efficiency Rectifiers
300A / 14.4kW Total Capacity
Remote Monitoring & Control
Intelligent Battery Management
Field Replaceable Controller
Ethernet Comm. with SNMPv3
3 LED Alarm/Status Indicators
Up to 10 Form-C Relay Alarms
Up to 13 Load Breakers
Up to 3 Battery Breakers
LCD Display/Touchpad
Easy Installation
Guardian Access 3U | MS27 Output:
System Voltage: -48VDC nominal | -53.5 float (factory default setting, user adjustable)
Maximum Capacity @ 120VAC nominal:
Load - 175A
Battery - 175A discharge | 75A charge (s/w controlled)
Maximum Capacity @ 230/400VAC nominal
Load - 200A
Battery - 200A discharge | 100A charge (s/w controlled)
No. Rectifier Slots: 5
Guardian Access 3U | MS27 DC Distribution:
Load Circuits: 13 x 13mm or 9 x 18mm (4A to 150A)
Battery Circuits: 3 x (80A, 100A or 125A)
Guardian Access 3U | MS27 Input:
Voltage (nominal):
1-phase 100-120/200-240VAC (L + N + PE)
3-phase 230/400VAC (L1 L2 L3 + N + PE)
Frequency: 47-63Hz
Maximum Input Current: 82A @ 100-120VAC | 65A @ 200-240VAC | 13A per phase @ 400/230VAC
Rectifier Power Factor: >0.98 (typical)
Surge Protection: Optional
Guardian Access 3U | MS27 Monitoring & Control (ACX Advanced Controller):
Alarm Relays: 4 standard, option for 10
Local Interface: 4 x 20 LCD, 4-key menu, USB / RS232, microSD card slot (4GB max,) for data logging
Remote Interface:
Ethernet / Modem using PowCom software package
Ethernet port allows monitoring and control over a TCP/IP network.
Web browser support + SNMPv3
LED Indications:
Green - System ON
Yellow - Message(s)
Red LED - Alarm(s)
External Digital I/O: 2 x Inputs, 2 x Outputs (TTL Level)
Guardian Access 3U | MS27 Battery Management:
Symmetry Inputs: 6 or 12 (can be redefined as analog inputs up to 100VDC)
Low Voltage Battery Disconnect (LVBD): 1 x 125A or 200A Programmable (Optional)
Partial Load Disconnect (LVD): 1 x 125A Programmable (Optional)
Temperature Compensated Charging: Programmable
Guardian Access 3U | MS27 Compliance:
EMC: EN 300 386 ; EN61000-6-3 (Emission) ; EN61000-6-2 (Immunity)
Safety: IEC60950-1:2005 2 Ed. +A1:2009
Guardian Access 3U | MS27 Environmental:
Operating Temperature: -40ºC to +55ºC
Storage Temperature: -40ºC to +85ºC
Guardian Access 3U | MS27 Dimensions, Ins. (Mm):
Standard Cover: 19.0 (483) W x 5.2 (132) H x 16.1 (408) D
Extended Cover: 19.0 (483) W x 5.2 (132) H x 19.1 (454) D
Stock Models:
MS0027G*900041:
3 Rectifier Position Chassis
ACX Controller
4 alarm relays
100A Battery Breaker (x2)
Load Breakers (18mm): 63A/63A/32A/32A/20A/20A /10A /10A
3m Temp. Sensor Cable (x1)
3m Symmetry Cable (x2)
Standard Cover Kit
[Rectifiers & Dummy Modules must be ordered separately.]
MS0027G*900042:
5 Rectifier Position Chassis
ACX Controller
4 alarm relays
100A Battery Breaker (x2)
Load Breakers (18mm): 63A/63A/32A/32A/20A/20A /10A /10A
3m Temp. Sensor Cable (x1)
3m Symmetry Cable (x2)
Standard Cover Kit
[Rectifiers & Dummy Modules must be ordered separately.]
Guardian Access 3U - MS27 Intelligent Battery Management:
Battery Disconnection - Provides voltage controlled disconnection of batteries.
Boost Charging - Manual time controlled or automatic boost charging with adjustable time and voltage levels.
Battery Tests - Automatic or manual testing of batteries up to six times per year with a 10 test memory. Variables include test duration and end voltage. Battery discontinuance test to ensure battery connection.
Enhanced Battery Monitoring - Monthly logging of essential battery parameters including temperature, temperature hours, current, charging voltage and symmetry voltage, Data logged for 5 years.
Site Logs - System tools developed to assist site management. Daily peak load and statistic logs available.
Symmetry Measurement - Optional tool that measures batteries for early detection of thermal runaway.
Temperature Compensation Charging - Allows continuous adjustment of output voltage according to battery temperature. Features include adjustable compensation factor and separate thresholds for high temperature alarms.
Load Shedding (PLD) - Optional feature that allows voltage or time-controlled disconnection of non-essential load.
Alpine Power Systems is a value-added reseller of UNIPOWER products. Alpine can provide DC Power System services on all UNIPOWER products including engineering, installation, preventative maintenance, monitoring and recycling. Alpine’s Certified Technicians are equipped to maximize the performance and efficiency of your UPS system. Contact us today for pricing and technical inquiries.
Applications
- Switchgear
- Data Center
- Industrial
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