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Technical Manual
MPS48-7M
Effective: August 2007
Alpha Technologies
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® Alpha Technologies Power
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MPS48-7M Technical Manual 021-511-B4-002, Rev. B Effective Date: August 2007 Copyright© 2007 Alpha Technologies, Inc. TM member of The Group NOTE: Photographs contained in this manual are for illustrative purposes only. These photographs may not match your installation. NOTE: Operator is cautioned to review the drawings and illustrations contained in this manual before proceeding. If there are questions regarding the safe operation of this product, please contact Alpha Technologies
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Contents Safety Notes .......................................................................................................................... 6 1.0 Introduction ...............................................................................................................10 2.0 Theory of Operation ...................................................................................................11 3.0 Specifi cations..............................................................................
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List of Figures and Tables Fig. 1-1, MPS48-7M Overview ............................................................................................ 10 Fig. 3-1, MPS48-7M Enclosure Dimensions........................................................................ 13 Fig. 4-1, AC Connections..................................................................................................... 17 Fig. 4-2, Input Voltage Select Switch ..................................................................
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Safety Notes Review the drawings and illustrations in this manual before proceeding. If there are any questions regarding the safe installation or operation of this product, contact Alpha Technologies or the nearest Alpha representative. Save this document for future reference. To reduce the risk of injury or death, and to ensure the continued safe operation of this product, the following symbols have been placed throughout this manual. Where these symbols appear, use extra care and attenti
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General Safety Precautions To avoid injury: • This enclosure and its hardware must only be serviced by authorized personnel. • The enclosure must remain locked at all times, except when authorized service personnel are present. • Remove all conductive jewelry or personal equipment prior to servicing equipment, parts, connectors, wiring, or batteries. • Read and follow all installation, equipment grounding, usage, and service instructions included in this manual. • Use proper lifting techniques
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Battery Safety Notes WARNING! Lead-acid batteries contain dangerous voltages, currents, and corrosive material. Battery installation, maintenance, service, and replacement must be performed only by authorized personnel. Chemical Hazards Any gelled or liquid emissions from a valve-regulated lead-acid (VRLA) battery contain dilute sulfuric acid, which is harmful to the skin and eyes. Emissions are electrolytic, and are electrically conductive and corrosive. To avoid injury: • Servicing and co
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Battery Maintenance Guidelines The battery maintenance instructions listed below are for reference only. Battery manufacturer’s instructions for transportation, installation, storage or maintenance take precedence over these instructions. • Inspect batteries every 6 months for: Signs of battery cracking, leaking or swelling. The battery should be replaced immediately by authorized personnel using a battery of the identical type and rating. • Apply battery manufacturer’s specifi ed antioxidant
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1.0 Introduction Alpha’s FlexNet MPS48-7M multipurpose power supply provides primary and standby power to Wi-Fi radios in wall-mount and pole-mount applications. The MPS48-7M interface module includes connections for radio, Ethernet backhaul, local Craft port, and 48Vdc auxiliary connection. The MPS48-7M is supported by a full complement of options including batteries, 120Vac or 240Vac battery heater mat, 120Vac line cord, and a step-down transformer for high voltage streetlight application
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2.0 Theory of Operation The FlexNet MPS48-7M multipurpose power supply provides fi ltered 50W output power for a typical 48V telecom bus during normal line operation. During line disruptions, the MPS48-7M supplies uninterrupted output power of 50W directly from a string of four 12V batteries. Metal oxide varistor (MOV) technology provides line voltage surge suppression in the event of line cross or power spikes. An electromagnetic fi lter conditions line voltage, enabling the power supply to
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3.0 Speci fi cations Input 90-132Vac (low range) or 180-264Vac (high range), 250 to 347Vac with optional Voltage Range (switch selectable) step-down transformer Frequency 47Hz or 63Hz ANSI/IEEE Std. C62.41 to Category A, B, or C requirements, using a “Ring Wave” Surge Protection or “Combination” waveform, at a level of 6kV Output Operating Output Power 50W continuous, 70W max (10 seconds) Output Voltage 42 to 56Vdc Ripple <250mVrms Noise <2Vp-p Transfer Characteristics Uninterrupted output Bat
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3.0 Specifi cations, continued 12.4" (315mm) 3.5" (89mm) 0.380" (10mm) dia. 0.395" (10mm) dia. 6.7" (170mm) 12.8" (325mm) 5.2" (132mm) Fig. 3-1, MPS48-7M Enclosure Dimensions Spare Parts and Options Part Number Product Name 189-078-20 Battery Heater for the MPS48-7M, 240Vac 189-078-21 Battery Heater for the MPS48-7M, 120Vac 745-866-20 Mounting Bracket with Hardware (included) 745-863-20 AC Line Cord, 5-15P, 8' 745-850-22 Transformer Kit, 277Vac Step-Down to 240Vac 243-119-19 Transformer Kit, 34
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4.0 Installation 4.1 Unpacking the MPS48-7M Remove the mounting bracket and enclosure from the shipping carton. Inspect the MPS48-7M for shipping damage. Verify each carton contains: • MPS48-7M enclosure • Mounting bracket and hardware • 3/4" 3-hole strain relief fi tting • 1/2" strain relief fi tting • Cable ties • Quick Start Guide 4.2 Enclosure Installation, Wall-mount or Wooden Pole-mount Most codes require the base of the enclosure to be located a minimum height from the ground. Always ve
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4.0 Installation, continued 4.2 Enclosure Installation, Wall-mount or Wooden Pole Mount, continued 4. Hang the enclosure on the bracket. 5. Secure the enclosure to the bracket using the four self-tapping screws with washers (supplied). Proceed to Section 4.4. 021-511-B4-002, Rev. B 15
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4.0 Installation, continued 4.3 Enclosure Installation, Steel or Concrete Pole To mount the MPS48-7M on concrete or steel poles, two user-supplied mounting straps are required (straps must be stainless, galvanized, or equivalent). Most codes require the base of the enclosure to be located a minimum height from the ground. Always verify height restrictions before installation. ATTENTION: Before installing an enclosure, the location and method of mounting must be approved by the property owner.
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4.0 Installation, continued 4.4 AC Input (120/240Vac) Connection Procedure Required Tools and Materials: • Hammer with punch or screwdriver • 1" Open-end wrench • Channellock pliers • 11/32" (9mm) torque wrench or nut driver • #1 fl athead torque screwdriver ATTENTION: The user or installer must provide an accessible system disconnect device located near the power supply enclosure as required by local electrical codes, and an over-current protection device with a maximum rating of 20A, or as
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4.0 Installation, continued 4.5 AC Connection with High Voltage Transformer The transformer converts high voltage to 240Vac. The transformer is required for powering the MPS48-7M from high voltage light pole applications. Use the following connection procedures for installing the transformer kit. Required Tools and Materials: • #2 Phillips screwdriver • #1 fl athead screwdriver (torque drive) • Diagonal cutters CAUTION! Never apply high voltage to a unit without using a step-down transformer.
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4.0 Installation, continued 4.5 AC Connection with High Voltage Transformer, continued 4.5.2 Installing the Streetlight AC Power Tap Cable 1. Remove the 1/2" EMT knockout (7/8" dia.) and the 3/4" EMT knockout (1 1/8" dia.), located in the center bottom of the enclosure. For alternate installation, remove knockouts from the right side, left side or back left of the enclosure as needed. 2. Install the provided 1/2" strain relief fi tting in the 1/2" knockout. Route the Streetlight AC Power Tap
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4.0 Installation, continued 4.6 Network Cable Connection Procedure Required Tools and Materials: Channellock pliers 1. Remove the white seal from the 3-hole strain relief fi tting, and install the base of the fi tting into the 3/4" Network Cable knockout. Secure the top inside nut. (optional) 2. Route the customer-supplied connection cables into the enclosure through the outer nut and base. 3. Route the Ethernet cable and auxiliary wiring (if applicable) from inside the enclosure, down throug
