UNIPOWER Guardian Access M38 DC Power Systems

The UNIPOWER Guardian Access M38 is a 5-7RU high 19” rack-mounted, integrated 600 Amp DC power system providing an output of -48VDC. These highly configurable systems incorporate 3 rectifier shelves with up to 11 Guardian family high efficiency hot-swap rectifiers. The Guardian Access M38 comes with a three year warranty. Alpine Power Systems is an approved distributor of UNIPOWER products.

Guardian Access M38 provides a maximum total current of 600A (N+1). This may be shared between the load and battery charge current, the latter being programmable via the controller. 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 distribution module in Guardian Access M38 can accommodate up to 20 pluggable breakers or TPS fuse modules. 4 or 8 of these in each case may be connected to the bus via the Low Voltage Battery Disconnect (LVBD).

Guardian Access M38 & Features and Options:

• >96% Efficiency Rectifiers

• 60A to 600A (N+1) Capacity

• Remote Monitoring & Control

• Field Replaceable Controller

• Ethernet Comm. with SNMPv3

• 3 LED Alarm/Status Indicators

• 10 Form-C Relay Alarms

• Up to 20 Load Circuits

• 600A LVBD Standard

• LCD Display/Touchpad

• Easy Installation

UNIPOWER Guardian Access M38 Output:

System Voltage: -48VDC nominal | -53.5 float (factory default setting, user adjustable)

Maximum Capacity:

• Load - 600A

• Battery - 600A discharge | 145A charge (s/w controlled)

No. Rectifier Slots: 3 to 11

UNIPOWER Guardian Access M38 DC Distribution:

• Load Circuits: Up to 20 (3A to 100A one position, 125A or 200A two position) Battery Circuits: 0, 4 or 8 x (100A one position, 125A two position or 200A two position)

UNIPOWER Guardian Access M38 Input:

Voltage (nominal): 1-phase 200-240VAC (L + N + PE)

Frequency: 47-63Hz

Maximum Input Current: 17A per rectifier

Rectifier Power Factor: >0.98 (typical)

UNIPOWER Guardian Access M38 Monitoring & Control (ACX Advanced Controller):

Alarm Relays: 10 standard

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)

UNIPOWER Guardian Access M38 Battery Management:

Symmetry Inputs: 6 or 12 (can be redefined as analog inputs up to 100VDC)

Low Voltage Battery Disconnect (LVD): 1 x 600A Programmable

Temperature Compensated Charging: Programmable

UNIPOWER Guardian Access M38 Compliance:

EMC: EN 300 386 ; EN61000-6-3 (Emission) ; EN61000-6-2 (Immunity)

Safety: IEC60950-1:2005 2 Ed. +A1:2009

UNIPOWER Guardian Access M38 Environmental:

Operating Temperature: -40ºC to +55ºC

Storage Temperature: -40ºC to +85ºC

UNIPOWER Guardian Access M38 Dimensions, Ins. (Mm):

Width: 19.0 (483)

Height: 5RU, 6RU,7RU

Depth: 21.6 (548) overall, 14.0 (255) behind mounting plate.

UNIPOWER Guardian Access M38 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. Since 1963, working with Alpine Power gives you the Ultimate Advantage. Contact us today for pricing and technical inquiries.