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APC MX28B-1200 - page 1
APC DC Network Solutions Inc. Division 11035 Switzer Avenue Dallas, TX 75238 Part Number PML-0218 800-800-4APC Revision (B) DC POWER PLANT PRODUCT MANUAL MODEL MX28B-1200/2400 ...
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APC MX28B-1200 - page 2
MX28B-1200 PRODUCT MANUAL Revision B ii MX28B-1200/2400 ...
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APC MX28B-1200 - page 3
Revision B MX28B-1200 PRODUCT MANUAL MX28B-1200/2400 iii REVISION HISTORY Revision Date By Description Preliminary 05/19/2000 SCG Preliminary release. A 06/30/2000 SCG Various corrections and ty pos. B 01-16-01 JNF Replaced Advance with APC. Changed 1-800 number. Added ESD caution ...
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APC MX28B-1200 - page 4
MX28B-1200 PRODUCT MANUAL Revision B iv MX28B-1200/2400 TABLE OF CONTENTS 1. GENERAL INFORMATION ......................................................................................................... .................. 1 1.1 I NTRODUCTION ............................................................................................................ ...
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APC MX28B-1200 - page 5
Revision B MX28B-1200 PRODUCT MANUAL MX28B-1200/2400 v 5.8.2 Installati on of Circuit Breakers and Fuses ............................................................................... .......... 26 5.8.2.1 Plug -in Circuit Bre akers ............................................................................................... .................... ...
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APC MX28B-1200 - page 6
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APC MX28B-1200 - page 7
Revision B MX28B-1200 PRODUCT MANUAL MX28B-1200/2400 1 1. GENERAL INFORMATION 1.1 Introduction DC Power Plants from APC hav e unique features that make them easy to install, maintain, and upgrade. The rectif ier units are modular and truly “ hot-pluggable” into the shelf assembly without any separate ac wiring. All sy stem setting s are made fr ...
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APC MX28B-1200 - page 8
MX28B-1200 PRODUCT MANUAL Revision B 2 MX28B-1200/2400 2) File a damag e or shortage report with the carrier that delivered the shipment. 1.3.3 Concealed Damage It is the customer’s responsibility to unpack the power sy stem and equipment receiv ed from APC and check f or concealed damage. W ithin 15 days of receipt, check the materials receiv ed ...
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APC MX28B-1200 - page 9
Revision B MX28B-1200 PRODUCT MANUAL MX28B-1200/2400 3 2. CUSTOMER SERVICE AND SUPPORT APC manufactures a line power plants and prov ides customers with complete product and sy stems support and service. APC has an international network of f actory trained serv ice technicians. The service org anization is on call 24 hours a day, 365 day s a y ear. ...
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APC MX28B-1200 - page 10
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APC MX28B-1200 - page 11
Revision B MX28B-1200 PRODUCT MANUAL MX28B-1200/2400 5 3. WARRANTY PROVISIONS 3.1 General Provisions APC warrants the power equipment and components it manufactures or sells ag ainst defective materials and workmanship for a period of TWO (2) YEARS f rom the date of shipment. 3.1.1 Warranty Returns If initial phys ical inspection results in identif ...
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APC MX28B-1200 - page 12
MX28B-1200 PRODUCT MANUAL Revision B 6 MX28B-1200/2400 5. APC shall not be liable to the user (purchaser) or any third party f or indirect, incidental, or consequential damages s uch as, but not limited to, loss of use, loss of profits, costs associated with remov al/installation of a def ective product(s) or component(s ) arising out of the sale o ...
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APC MX28B-1200 - page 13
Revision B MX28B-1200 PRODUCT MANUAL MX28B-1200/2400 7 4. PRODUCT OVERVIEW AND TECHNICAL DESCRIPTION 4.1 Description The APC Models M X28B-1200/2400 represents a f amily of stand-alone -48V dc power plants. Through the use of modular power and distribution box frames, a sy stem is configurable in such a manner that it will support most ty pical app ...
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APC MX28B-1200 - page 14
MX28B-1200 PRODUCT MANUAL Revision B 8 MX28B-1200/2400 Figure 4-2 MX28B-1200 System Diagram ...
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APC MX28B-1200 - page 15
Revision B MX28B-1200 PRODUCT MANUAL MX28B-1200/2400 9 4.2 Power Output Capacity A single pow er box frame consis ts of six rectif ier shelves, each shelf accommodating up to four hot-plug, 50 amp rectif iers. A completely conf igured power f rame with 24 rectifiers is rated at 1200 amps. Each additional power f rame will add up to 1200 amps for a ...
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APC MX28B-1200 - page 16
MX28B-1200 PRODUCT MANUAL Revision B 10 MX28B-1200/2400 4.5 AC Input Powe r Each rectifier requires 208/220/240V ac, sing le- phase, 50/60 Hz, supplied through an external 20- amp two-pole breaker. A vertical wire channel at the rear of the box f rame provides terminal strips for ac input power connection of each shelf. Separate “Earth Ground” ...
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APC MX28B-1200 - page 17
Revision B MX28B-1200 PRODUCT MANUAL MX28B-1200/2400 11 distribution section with the front cov er removed. Alternate circuit breaker config urations are available in order f or the power f rames to provide support for larg er individual load connections. Six circuit breakers in the 100 amp to 400 amp range or f our circuit breakers in the 225 to 7 ...
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APC MX28B-1200 - page 18
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APC MX28B-1200 - page 19
Revision B MX28B-1200 PRODUCT MANUAL MX28B-1200/2400 13 5. INSTALLATION PROCEDURES 5.1 Preparation 5.1.1 Recommended Tools • = Standard selection of insulated hand tools. • = Proper tools f or crimping the selected cable lug s. 5.1.2 Recommended Test Equipm ent • = Digital M ultimeter 5.1.3 Equipment Inspection Remove equipment fr om packing ...
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APC MX28B-1200 - page 20
MX28B-1200 PRODUCT MANUAL Revision B 14 MX28B-1200/2400 5.1.5 Room/Locations NOTE: The APC Model MX28B dc power plant is to be installed in a room, vault, or similar en closure that is acces sible only to q ualified persons in accordance with the NEC or the authority having jurisdiction. Prior to installation, drawings, f loor loading requirements, ...
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APC MX28B-1200 - page 21
Revision B MX28B-1200 PRODUCT MANUAL MX28B-1200/2400 15 5.1.7 Ventilation The rectifiers hav e fans that provide f ront to rear airflow for internal cooling . The MX28B housing should mounted such that there is f ree airflow to the front and top of the unit. [Refer to Section 4.8 for environmental characteristics.] 5.2 AC Servi ce and Gr ound Conne ...
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APC MX28B-1200 - page 22
MX28B-1200 PRODUCT MANUAL Revision B 16 MX28B-1200/2400 conduit must also be considered in accordance w ith NEC requirements. It is s ugg ested that feeds f or four rectif iers (8 wires) and one saf ety g round wire be run in a one-inch conduit; however, be sure to f ollow any local electrical wiring codes. If the ac input power is provided from a ...
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APC MX28B-1200 - page 23
Revision B MX28B-1200 PRODUCT MANUAL MX28B-1200/2400 17 5.3 Battery Connections 5.3.1 Battery Disconnect An external circuit breaker (not supplied) is required in the negativ e line (located at the battery end) to protect the cables from the battery to the MX28B dc power plant. The power plant can monitor auxiliary contacts from this breaker. S ele ...
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APC MX28B-1200 - page 24
MX28B-1200 PRODUCT MANUAL Revision B 18 MX28B-1200/2400 5.5 Rectifier Installation The APC Model MRF28H54BV rectif iers are shipped in separate containers. Follow the procedure below to install a rectif ier. 1) Remove the rectifier f rom its shipping container. 2) Remove the rectif ier retaining screw f rom the shelf position where the rectifier is ...
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APC MX28B-1200 - page 25
Revision B MX28B-1200 PRODUCT MANUAL MX28B-1200/2400 19 5.6.2 Control Wiring Cables for controlling and monitoring the rectif iers and circuit breakers/fus es must be run from expansion frames to the control unit in the base frame. There are three basic cables used for these functions: • = The AWA-0970 ten-pin ribbon cable connector handles seria ...
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APC MX28B-1200 - page 26
MX28B-1200 PRODUCT MANUAL Revision B 20 MX28B-1200/2400 CONTROL UNIT BASE POWER BAY FUSE BAY EXTENSION POWER BAY DC/DC CONVERTER DC/DC CONVERTER FUSE SENSE PCB ALARM EX T EN SI ON P CB AW A -0967 AW A -0969 AW A -0970 AW A -0972 Figure 5-6 Typical Connection of Cables in Multi-Bay System ...
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APC MX28B-1200 - page 27
Revision B MX28B-1200 PRODUCT MANUAL MX28B-1200/2400 21 Figure 5-7 Multi-Bay Wiring Diagram ...
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APC MX28B-1200 - page 28
MX28B-1200 PRODUCT MANUAL Revision B 22 MX28B-1200/2400 ...
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APC MX28B-1200 - page 29
Revision B MX28B-1200 PRODUCT MANUAL MX28B-1200/2400 23 5.7 Alarm Connections The alarm connections for all rectif iers, breakers, and f uses are f actory pre-w ired. The MX28B dc power plant, howev er, permits the user to program the sy stem alarms in various way s. A Printed Circuit (PC) board desig nated “EAA- 0075” is mounted in the space a ...
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APC MX28B-1200 - page 30
MX28B-1200 PRODUCT MANUAL Revision B 24 MX28B-1200/2400 5.7.1 Exter nal Alarm Inputs Four external alarm inputs with assig nable priority levels are available. These alarm inputs respond to external dry contact closures between normally open (NO) and common (C) or contact openings between normally closed (NC) and C (see Table 5-1). Table 5-1. Ex te ...
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APC MX28B-1200 - page 31
Revision B MX28B-1200 PRODUCT MANUAL MX28B-1200/2400 25 ALARM OUTPUT TERMINAL DESIGNATION NO-NC-C USER ALARM NOTES RELAY #1 RELAY #2 RELAY #3 RELAY #4 RELAY #5 RELAY #6 MINOR MAJOR J1 NO1-NC1-C1 NO2-NC2-C2 NO3-NC3-C3 NO4-NC4-C4 J2 NO5-NC5-C5 NO6-NC6-C6 NO7-NC7-C7 NO8-NC8-C8 ________________________ ________________________ ________________________ ...
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APC MX28B-1200 - page 32
MX28B-1200 PRODUCT MANUAL Revision B 26 MX28B-1200/2400 Fus e holders that accommodate telecom fuses are located in a separate fuse power dis tribution box frame. The f use holders are designed to hold Bussmann® (or equivalent) TPL -series fuses in sizes of 70 amps to 600 amps. The f ollowing stock sizes are av ailable from APC: FUSE RATING APC PA ...
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APC MX28B-1200 - page 33
Revision B MX28B-1200 PRODUCT MANUAL MX28B-1200/2400 27 Figure 5-9 Plug-in C ircuit Breaker I nsertion 5.8.2.2 Circuit Breaker Load Connections Connections for the -48V dc loads are located directly to the side of the corresponding breaker. A ty pical load connection would utilize a #6 AW G wire w ith a two-hole lug on 5/8-inch centers, attached wi ...
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APC MX28B-1200 - page 34
MX28B-1200 PRODUCT MANUAL Revision B 28 MX28B-1200/2400 5.9 Battery Temperature Probe Installation The optional temperature probe is used to monitor the battery string temperature. To get the most representativ e temperature measurement, the probe should be placed in contact with a battery cell that is centrally located. The probe should be placed ...
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APC MX28B-1200 - page 35
Revision B MX28B-1200 PRODUCT MANUAL MX28B-1200/2400 29 MX28B-1200 + S TATUS ALARMS SYSTEM MODULES BATT PIN OEM Figure 5-11 Control Unit Display 5.10.2 System Parameters Verification/Adjustment The MX28B sy stem control unit is deliv ered with pre-prog rammed parameter default settings . A complete listing and description of all system conf igurati ...
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APC MX28B-1200 - page 36
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APC MX28B-1200 - page 37
Revision B MX28B-1200 PRODUCT MANUAL MX28B-1200/2400 31 Arrow Keys move Display Window across main menu items and down into additional menu selections 6. SETUP, ADJUSTMENTS, AND OPERATION 6.1 User Interface The MX28B control unit prov ides a user interface des igned with a hierarchical menu that can be viewed on the 32-character display by “navig ...
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APC MX28B-1200 - page 38
MX28B-1200 PRODUCT MANUAL Revision B 32 MX28B-1200/2400 permits modification of some parameters; no security is required f or viewing status items. The security level password is entered through the “ PIN” screen. I f no front panel key s are pressed for 60 minutes, the activ e password reverts to “0000” and “ █ APC █ ” begins to mo ...
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APC MX28B-1200 - page 39
Revision B MX28B-1200 PRODUCT MANUAL MX28B-1200/2400 33 1) Use the right or lef t arrow keys to position the cy cling cursor below “SYSTEM”. 2) Press the down arrow key once. 3) Use the right arrow key to position the cy cling cursor below “I N-RLY”. 4) Press the dow n arrow key once; the cursor will be cy cling below “ RLY -MAP”. 5) Pr ...
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APC MX28B-1200 - page 40
MX28B-1200 PRODUCT MANUAL Revision B 34 MX28B-1200/2400 Figure 6-2. Cont rol Unit Menu S tructure MX28B-1200 + STATUS Sys Voltage Sys Current Sys Temp Batt Current Batt Temp ALARMS Alarm Item 1 Alarm Item 2 Alarm Item 3 Alarm Item 4 Alarm Item 5 Alarm Item 6 Alarm Item 7 Alarm Item 8 Alarm Item 9 Alarm Item 10 Alarm Item 11 Alarm Item 12 Alarm Item ...
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APC MX28B-1200 - page 41
Revision B MX28B-1200 PRODUCT MANUAL MX28B-1200/2400 35 (Figure 6-2. Cont rol Unit Menu S tructure) Address 2 Address 3 Model Fahrenheit Cntrl Rev FW Version Display Type DATE Date Time OUT-RLY RLY-MAP Out-Rly 1 Alm Out-Rly 2 Alm Out-Rly 3 Alm Out-Rly 4 Alm Out-Rly 5 Alm Out-Rly 6 Alm Out-Rly 1 Dly Out-Rly 2 Dly Out-Rly 3 Dly Out-Rly 4 Dly Out-Rly ...
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APC MX28B-1200 - page 42
MX28B-1200 PRODUCT MANUAL Revision B 36 MX28B-1200/2400 (Figure 6-2. Cont rol Unit Menu S tructure) Test Relay En Test Relay 1 Test Relay 2 Test Relay 3 Test Relay 4 Test Relay 5 Test Relay 6 Test Min Rly Test Maj Rly MODULES RECT SET-ALM Rect CL Alm Rect Stdby Alm Rect FF Alm Rect RFA Alm PARAM Rect Fail Safe Rect Fail Comm INFO Rect # Desc Rect # ...
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APC MX28B-1200 - page 43
Revision B MX28B-1200 PRODUCT MANUAL MX28B-1200/2400 37 (Figure 6-2. Cont rol Unit Menu S tructure) Cir Bkr 7 Cir Bkr 8 • • • • • • • • • • • • Cir Bkr 70 Cir Bkr 71 Cir Bkr 72 FUSE SET-ALM FUSE 1 Alm FUSE 2 Alm FUSE 3 Alm FUSE 4 Alm FUSE 5 Alm FUSE 6 Alm FUSE 7 Alm FUSE 8 Alm FUSE 9 Alm FUSE 10 Alm FUSE 11 Alm FUSE 12 Alm F ...
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APC MX28B-1200 - page 44
MX28B-1200 PRODUCT MANUAL Revision B 38 MX28B-1200/2400 (Figure 6-2. Cont rol Unit Menu S tructure) LVD SET-ALM LVD1 Option LVD1 Open Alm LVD2 Option LVD2 Open Alm PARAM LVD1 Trip LVD1 Reset LVD2 Trip LVD2 Reset BATT SET-ALM Batt Disc Thr Batt Disc Alm Batt HV Thr Batt HV Alm Batt LV Thr Batt LV Alm Batt HT Thr Batt HT Alm Batt LT Thr Batt LT Alm P ...
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APC MX28B-1200 - page 45
Revision B MX28B-1200 PRODUCT MANUAL MX28B-1200/2400 39 Table 6-1. Parameter Locations , Descriptions , and Default Values PARAMETER DESCRIPTION DISPLAY SCREENS / DEFAULT SETTINGS SYSTEM SETUP Password Entry P I N E n t r y [PIN] Screen f or ent ry of the a ct ive pas swor d (P IN). PIN m+ 0000 Pass wor d Set up Leve l 1 PIN {2} [SYSTEM/SETUP] Pass ...
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APC MX28B-1200 - page 46
MX28B-1200 PRODUCT MANUAL Revision B 40 MX28B-1200/2400 (Table 6.1 Parameter Locations, Descriptions, and Default Values) PARAMETER DESCRIPTION DISPLAY SCREENS / DEFAULT SETTINGS D i s p l a y T y p e [SYSTEM/SETUP] Type number for the c ontrol unit di sp lay. Display Type + 000255 Date/Time Setup Date {1} [SYSTEM/DATE] Inte rnal sy stem calendar d ...
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APC MX28B-1200 - page 47
Revision B MX28B-1200 PRODUCT MANUAL MX28B-1200/2400 41 (Table 6-1. Parameter Locations, Descriptions, and Default Values) PARAMETER DESCRIPTION DISPLAY SCREENS / DEFAULT SETTINGS System Low Temperat ure {1 } [SYSTEM/SET-ALM] The contro l unit tem peratu re is below the lo w tem perature thres hold. Sys LT Alm m+ Minor Recti fier Confi gurat ion {1 ...
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APC MX28B-1200 - page 48
MX28B-1200 PRODUCT MANUAL Revision B 42 MX28B-1200/2400 (Table 6-1. Parameter Locations, Descriptions, and Default Values) PARAMETER DESCRIPTION DISPLAY SCREENS / DEFAULT SETTINGS Test Relay 1 {1} [SYSTEM/DIAG] Settin g this param ete r to “ON” ene rgizes R elay 1 and tu rns on the “ ALM1” LED on the c ontrol unit front pa nel. Test Relay 1 ...
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APC MX28B-1200 - page 49
Revision B MX28B-1200 PRODUCT MANUAL MX28B-1200/2400 43 (Table 6-1. Parameter Locations, Descriptions, and Default Values) PARAMETER DESCRIPTION DISPLAY SCREENS / DEFAULT SETTINGS Battery Alarms Discha rge Ala rm {1} [BATT/SET-ALM] An alarm that is ge nerate d if the battery discharg e curren t exceeds t he pr ogra mmed batt ery disc har ge thres h ...
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APC MX28B-1200 - page 50
MX28B-1200 PRODUCT MANUAL Revision B 44 MX28B-1200/2400 (Table 6-1. Parameter Locations, Descriptions, and Default Values) PARAMETER DESCRIPTION DISPLAY SCREENS / DEFAULT SETTINGS Standby Alarm {1} [MODULES/RECT/SET-ALM] This alarm indi cates that the contro l unit is h oldin g a rectifier in the s ta ndby mode. Rect Stdby Almm+ no fN Fan Fai l Ala ...
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APC MX28B-1200 - page 51
Revision B MX28B-1200 PRODUCT MANUAL MX28B-1200/2400 45 (Table 6-1. Parameter Locations, Descriptions, and Default Values) PARAMETER DESCRIPTION DISPLAY SCREENS / DEFAULT SETTINGS FUSE Fuse Al arms Fuse 1 B lown {1 } [MODULES/FUSE/SET-ALM] An alarm that ind icates Fu se 1 is blow n. FUSE 1 Alm m+ Major • • • • • • • • • Fuse 16 Bl ...
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APC MX28B-1200 - page 52
MX28B-1200 PRODUCT MANUAL Revision B 46 MX28B-1200/2400 (Table 6-1. Parameter Locations, Descriptions, and Default Values) PARAMETER DESCRIPTION DISPLAY SCREENS / DEFAULT SETTINGS Outpu t Relay Major Alias {1} [SYSTEM/OUT-RLY/ALIAS] An alte rnate n ame (alias) can be assign ed to the re lay if desir ed. Relay Major m+ Major Outpu t Relay 1 Delay {1 ...
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APC MX28B-1200 - page 53
Revision B MX28B-1200 PRODUCT MANUAL MX28B-1200/2400 47 ...
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APC MX28B-1200 - page 54
MX28B-1200 PRODUCT MANUAL Revision B 48 MX28B-1200/2400 ...
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