MX28B1200/2400 MX28B1200/4800 -48 VDC POWER SYSTEMS User’s Manual (Document # 990-1148A)
Table of Contents 1 SAFETY FIRST! .....................................................................................................................1 1.1. 1.2. 2 INTRODUCTION ....................................................................................................................2 2.1. 2.2. 3 WARNING SYMBOLS .........................................................................................................1 GENERAL PRECAUTIONS: .......................................................
.10. 3.11. 4 EXTERNAL ALARM INPUT CONNECTIONS ..........................................................................25 RECTIFIER MODULE INSTALLATION...................................................................................26 COMMISSIONING AND PREVENTIVE MAINTENANCE ....................................................27 4.1. PRE-COMMISSIONING INSPECTION ...................................................................................27 Environment............................................
6.3. 7 COMMAND AND MONITORING PROTOCOL .........................................................................54 PREVENTIVE MAINTENANCE............................................................................................55 7.1. EQUIPMENT ...................................................................................................................55 7.2. INSPECTION ...................................................................................................................
Revision History Revision 1 Date 31 JAN, 2002 By JNF Description Converted to APC numbering 2 28 SEP, 2003 BET Updated Format and added 4800 Table of Figures FIGURE 2.2-1 MX28B-1200 –48 VDC POWER PLANT RECTIFIER BAY.............................................3 FIGURE 2.2-2 MX28B BLOCK DIAGRAM ...............................................................................................4 FIGURE 3.2-1 FLOOR MOUNTING DIMENSIONS .........................................................................
1 Safety First! It is very important to follow all safety procedures when unpacking, installing and operating any sort of power equipment. 1.1. Warning Symbols CAUTION: An indication that special care is required to prevent injury, equipment damage or misuse WARNING: An indication of an electrical hazard that may cause serious personal injury or death, catastrophic equipment damage or site destruction. 1.2.
2 Introduction 2.1. General Information DC Power Plants from APC have unique features that make them easy to install, maintain, and upgrade. The rectifier units are modular and truly “hot-pluggable” into the shelf assembly without any separate AC wiring. All system settings are made from the system control unit that provides monitoring and control functions for each component of the system as well as alarm listings for system diagnosis and maintenance.
Figure 2.
Figure 2.
3 Installation 3.1. Unpacking Equipment Remove equipment from packing material and inspect for shipping damage or missing items. It is important to report damage or material shortages to the shipping carrier while a representative is on site. If concealed damage or material shortages are found at a later time, contact the shipper to make arrangements for inspection and claim filing. Refer to Section 7 in the event it is necessary to return equipment to APC.
Mounting The box frame housing the MX28B components is self-supporting, but designed to be bolted to the floor of the housing structure. Figure 3.2-1 shows the footprint of the box frame and the mounting points with dimensions (shown in inches). Consult the system design specifications to see if it is necessary to electrically isolate the frame from the floor structure. This is required in many installations. Figure 3.
Figure 3.2-2 MX28B-1200-2400 has a maximum capacity of 2400 Amps. Figure 3.2-3 The MX28B1200-4800 can be expanded to 4800 Amps. Figure 3.
Circuit Breaker/LVD Ribbon Cable Connections Additional cables must be connected between cabinets to ensure that the circuit breaker alarms in the expansion bays are reported correctly. The circuit breakers and LVDs are connected together through the use of a Circuit Breaker / LVD Expansion Board. The ribbon cables on the left hand side of the board go to the bay to the left. The ribbon cables on the right hand side of the board go to the bay to the right.
Fuse Alarm Ribbon Cable Connections There is a 16-conductor ribbon cable, if any bay has fuses installed. This cable ties together the Wago breakout board in each bay with fuses. The ribbon cable must connect all the Wago breakout boards together with one ribbon cable. The idea is that each fuse will have one wire in the ribbon cable for the alarm. Two fuse alarm wires should not be connected to the same fuse. See Figure 3.2-6 for details. Ribbon cable pin 1 is for Fuse 1.
input. The AC wiring, from the AC input terminal block connections to the hot-pluggable AC input connector for each rectifier, is factory installed. The AC input enclosure, located at the top rear of the MX28B rectifier bay, is provided with nine ¼ -inch pilot holes in the top plate. Remove the ac input enclosure from the box frame in order to punch or drill the appropriate number of conduit openings for the conduit size(s) desired.
If the AC input power is provided from a three-phase distribution panel, the circuit breaker positions should be selected such that the load is balanced as much as possible. WARNING: The MX28B DC power plant is supplied from a high voltage source. Keep the AC input enclosure in place when the system is operational or energized. 3.4. Battery Connections WARNING: Hazardous energy levels are present on bare conductors in the 48VDC distribution connection area of the plant.
Connecting the Battery Cables WARNING: Make certain that the battery polarity is correct when making connections to the Model MX28B DC power plant. Incorrect connection could cause severe equipment damage. The battery cable connections are located at the top rear of the unit as shown in Figure 3.4-1. The battery positive (return bus) and battery negative (-48V bus) buses each provide four sets of 3/8” holes on one-inch or 1-3/4” centers for connecting two-hole battery cable lugs.
Battery Temperature Probe Installation The optional temperature probe is used to monitor the battery string temperature. To get the most representative temperature measurement, the probe should be placed in contact with a battery cell that is centrally located. The probe should be placed directly in contact with the cell (not the frame surrounding the cell). Generally, the cell cover can be used; be careful not to allow the probe body to touch the terminals.
Figure 3.5-1 DC System Grounding Figure 3.5-2 Box Frame Ground 3.6. DC Power Output Over-Current Protection There are several different options for DC output power distribution. Distribution provides a convenient method of connecting the load cables as well as over-current protection. DC Plug-in Circuit Breakers A standard 48-position plug-in circuit breaker tier provides -48V distribution.
the Wago connectors based on what bay the circuit breaker tiers are in. Typical circuit breaker numbering is bay 1: Cir Bkr 1-48, Bay 2: Cir Bkr 49-50, Bay 3: Cir Bkr 51-52 and Bay 4: Cir Bkr 53-54. Figure 3.6-1 shows the power plant’s main bay (with ribbon cables) DC distribution section with the front cover opened. Figure 3.6-1 DC Distribution (Front Cover Opened) Available plug-in circuit breakers are shown in Figure 3.6-2. These are only breakers and do not include any hardware.
10 A FFA-0017 70 A 530-9089 15 A 530-9093 80 A 530-9090 20 A FFA-0018 100 A 530-9091 30 A FFA-0019 Figure 3.
DC Bolt-in Circuit Breakers Bolt in Breakers in a variety of sizes up to 700 Amps are available. Triple pole breakers are available in sizes ranging from 400-700 Amps. Double pole breakers are available in sizes ranging from 250-400 Amps. Single pole breakers are available in sizes ranging from 100-225 Amps. Small breakers (half the size of a single pole breaker) are available in sizes ranging from 1-100 Amps. Two different panels are available for breaker mounting.
Telecom Fuses Telecom fuses in sizes ranging from 70 – 600 Amps are available. A panel in each rectifier bay will accommodate 4 fuse holders. Typical fuse numbering is Bay 1: Fuse 1-4, Bay 2: Fuse 5-8, Bay 3: Fuse 9-12 and Bay 4: Fuse 13-16. Only one fuse can be hooked up to any alarm wire. Refer to the following pictures for more information. Figure 3.
3.7. Installation of Circuit Breakers and Fuses Plug-in Circuit Breaker Installation CAUTION During circuit breaker installation, carefully align the breaker alarm terminals with the alarm terminal board to avoid breaker terminal damage. 1) Remove the circuit breaker cover panel and the plastic cover(s) from the desired location(s).
Bolt-in Circuit Breaker Installation 1) Remove the circuit breaker cover panel and the plastic cover(s) from the desired location(s). 2) Install the circuit breaker(s) by bolting the circuit breaker onto the bus at the bottom of the assembly. Bolt the lug landing bus to the top of the breaker. 3) Attach alarm wires to circuit breaker alarm outputs. The wires should be attached to the contacts that are open when the breaker is on and closed when the breaker is off or tripped. See Figure 3.7-2 for details.
Telecom Fuse Installation 1) Remove the fuse(s) from the desired location(s) by pulling the fuse holder straight out of the fuse holder base. 2) Install the fuse(s) by bolting the fuses(s) into the fuse holder. 3) Re-install the fuse holder by pushing the holder straight in. 4) Connect the alarm wiring to the alarm terminal at the output of the fuse holder base. 5) Connect the alarm wiring to the Fuse alarm Wago breakout board. NOTE: Fuse alarm contacts sense the voltage on the output of the fuse.
3.8. Load Connections Cable Size Considerations The DC load cable(s) should be sized sufficiently large to limit the voltage drop from the MX28B DC power plant to the loads per system design requirements. The cable(s) must also carry the full load current during battery operation. During battery operation the voltage will be lower, therefore the current will typically be higher. If assistance is required to determine the necessary cables for the application, contact your sales representative or APC.
Figure 3.8-1 Load connections for snap-in breakers Figure 3.8-2 Return Connections GMT Fuse Connections GMT fuses are only connected to -48VDC if the system has been purchased with the GMT fuse option. This option supplies -48VDC to lugs on the interface card through #6 AWG power cables controlled by a 50 Amp circuit breaker located in circuit breaker Position 1. The 2-hole lugs on both ends of the power cables have #10 holes on 5/8” centers.
The DB9 connector on the top right hand side of the unit, behind a blank panel directly above the controller, uses the special RS-232 cable (APC part number 940-0024C) to allow local access through a Terminal Emulation program like HyperTerminal™ or Procomm™ . RJ45 Ethernet Connector The optional management card, which is behind a blank panel directly above the controller, has an RJ-45 connector to support a TCP/IP protocol over a 10BaseT Ethernet Local Area Network (LAN).
RELAY OUTPUT TERMINAL DESIGNATION NO-NC-C USER ALARM NOTES RELAY #1 RELAY #2 RELAY #3 RELAY #4 NO1-NC1-C1 NO2-NC2-C2 NO3-NC3-C3 NO4-NC4-C4 ________________________ ________________________ ________________________ ________________________ RELAY #5 RELAY #6 MINOR MAJOR NO5-NC5-C5 NO6-NC6-C6 NO7-NC7-C7 NO8-NC8-C8 ________________________ ________________________ ________________________ ________________________ Figure 3.9-2 Output Relay Connections 3.10.
3.11.Rectifier Module Installation WARNING: Rectifier DC output circuits would be damaged if battery were installed incorrectly. Before rectifier installation, ensure proper battery polarity and that the battery is isolated from the rest of the system The rectifier modules are shipped in separate containers. Follow the procedure below to install a rectifier module. 1) Remove the rectifier from its shipping container.
4 Commissioning and Preventive Maintenance 4.1. Pre-Commissioning Inspection Environment 1. 2. 3. 4. Ensure the DC system environment is suitable for operation. Ensure that there is sufficient clearance around the system for service. Ensure that there is no sign of damage to the DC system. Consult with customer to disable installed customer alarms before servicing the unit. This will allow the unit to be serviced without creating false alarms. Electrical Installation 1. 2. 3. 4.
b. Case leaks. c. Post- seal leaks. d. Pressure relief valve leaks (VRLA only). e. Case swelling (VRLA only). f. Case swelling (VRLA only). 10. Check the torque of all battery inter- cell connector in accordance with the battery manufacturer’s specifications. 4.2. Commissioning Initial Set-up 1. 2. 3. 4. Remove all rectifiers. Ensure that the float/equalise switch is on float. Disconnect battery by removing a link in each string or opening the battery disconnects.
DC Power Up: 1. Verify with a voltmeter that the dc voltage is within 0.1 Vdc of the System Voltage. If the voltage is off adjust the R offset setting under the OEM menu. If the R Offset setting is more than +/- 1.00 Volt dc, contact APC for a replacement controller module. 2. Adjust battery float voltage to negative (-)49 Volts. 3. Verify System Low Voltage Alarm. 4. Adjust battery float voltage to negative (-)57 Volts. 5. Verify System High Voltage Alarm. 6.
Circuit Breaker/ Fuse Test: 1. For plug- in circuit breakers. Monitor alarm screen for circuit breaker alarm while shorting out each pair of alarm contacts (using a pair of tweezers) on the circuit breaker interface circuit board. Verify proper voltage at the circuit breaker common bus. 2. For fuses: Monitor alarm screen for fuse alarm while removing fuses from each position. Verify proper voltage at fuse common bus. 3. Turn on fuses and circuit breakers as desired. User Inputs 1.
4.3. Final Inspection: 1. Verify that the interior and exterior of the system is clean and free from debris. 2. Ensure all wires connected and bolts are properly tightened. 3. Ensure the following the User, Service, and Calibration parameters are set properly on the controller (default settings are in parenthesis): LVD (Param) LVD1 Trip (-42.00 V) LVD1 Reset (-48.00 V) LVD2 Trip (-42.00 V) LVD2 Reset (-48.00 V) Batt (Set-alm) Batt Disc Thr (10 A) Batt (Param) Batt Float (-54.
5 Operation 5.1. Technical Description The MX28B-1200/2400 Power System is designed to supply safe –54 VDC primary power through the use of up to 24 rectifier modules. One rectifier bay may be added to increase the capacity to 48 rectifiers. The MX28B-1200/4800 Power System is designed to supply safe –54 VDC primary power through the use of up to 24 rectifier modules. Three rectifier bays may be added to increase the capacity to 96 rectifiers.
5.3. System Management System Output Capacity The power plant has two basic configurations: The MX28B-1200/2400 supplies a maximum of 2400 amps or 2350 amps with N+1 redundancy. The housing for this configuration provides two rectifier bays with integrated DC output distribution, a control unit, and expansion bays for added DC output distribution. The MX28B-1200/4800 supplies a maximum of 4800 amps or 4750 amps with N+1 redundancy.
System Status and Alarm Reporting The PSCU monitors system voltage using a high accuracy digital voltmeter attached to the system bus. The PSCU monitors system temperature using a temperature IC mounted in the PSCU. The PSCU monitors system current by summing the current reported by individual rectifiers. The PSCU reports a number of system alarms including system high/low voltage and high/low temperature. Refer to Section 5.6 for PSCU control functions. 5.4.
Battery Temperature Compensation The Battery Float Voltage is set to the value recommended by the battery manufacturer in order to maintain correct battery charge at 25ºC. As temperature rises, electrochemical activity in a battery increases. Similarly, as temperature falls, electrochemical activity in a battery decreases. As temperature rises charging voltage should be reduced to prevent overcharge and increased as temperature falls to prevent undercharge.
right corner of the display. If a security level higher than the one presently set is required to modify the parameter, "s+" is displayed instead of “m+”. Status, alarms, and information screens have "+" in the upper right corner of the display (or “#” in the case of rectifier information screens) and cannot be modified. When AC power is initially applied, there is a 60-second period during which no alarms are reported.
1. Use the right or left arrow keys to position the cycling cursor below “SYSTEM”. 2. Press the down arrow key once. 3. Use the right arrow key to position the cycling cursor below “IN-RLY”. 4. Press the down arrow key once; the cursor will be cycling below “RLY-MAP”. 5. Press the down arrow key (repeatedly if necessary) until the desired parameter screen is displayed (there are eight parameter screens in this category).
PARAMETER NAME/ DESCRIPTION [MENU LOCATION] Battery High Temperature Alarm Security Level {1} [BATT/SET-ALM] Battery High Temperature Threshold Security Level {1} [BATT/SET-ALM] Battery High Voltage Alarm Security Level {1} [BATT/SET-ALM] Battery High Voltage Threshold Security Level {1} [BATT/SET-ALM] Battery Low Temperature Alarm Security Level {1} [BATT/SET-ALM] Battery Low Temperature Threshold Security Level {1} [BATT/SET-ALM] Battery Low Voltage Alarm Security Level {1} [BATT/SET-ALM] Battery Low Vo
PARAMETER NAME/ DESCRIPTION [MENU LOCATION] Circuit Breaker 1 Tripped Security Level {1} [MODULES/CIRBKR/SETALM] • • • Circuit Breaker 24 Tripped Security Level {1} [MODULES/CIRBKR/SETALM] Compensation High Knee Security Level {1} [BATT/COMP] Compensation Low Knee Security Level {1} [BATT/COMP] Compensation Method Security Level {1} [BATT/COMP] Compensation Temperature Coefficient Security Level {1} [BATT/COMP] Control Unit Revision {Status Only} [SYSTEM/SETUP] Date Security Level {1} [SYSTEM/DATE] Displa
PARAMETER NAME/ DESCRIPTION [MENU LOCATION] FUSE 1 Blown Security Level {1} [MODULES/FUSE/SET-ALM] • • • FUSE 8 Blown Security Level {1} [MODULES/FUSE/SET-ALM] Hardware Battery Current Alarm Security Level {2} [SYSTEM/SET-ALM] Hardware Battery Temperature Alarm Security Level {2} [SYSTEM/SET-ALM] Hardware LVD Alarm Security Level {2} [SYSTEM/SET-ALM] Hardware System Temperature Alarm Security Level {2} [SYSTEM/SET-ALM] Hardware System Voltage Alarm Security Level {2} [SYSTEM/SET-ALM] Input Relay 1 Securit
PARAMETER NAME/ DESCRIPTION [MENU LOCATION] LVD 1 or 2 Option Security Level {1} [MODULES/LVD/SET-ALM] LVD 1 or 2 Reset Security Level {1} [MODULES/LVD/PARAM] LVD 1 or 2 Trip Security Level {1} [MODULES/LVD/PARAM] LVD Alarm Security Level {1} [MODULES/LVD/SET-ALM] Model Programming Security Level {2} [SYSTEM/SETUP] OEM R Gain Security Level {2} [OEM] OEM R Offset Security Level {2} [OEM] OEM S Gain Security Level {2} [OEM] OEM S Offset Security Level {2} [OEM] Output Relay 1 Alarm Security Level {1} [SYS
PARAMETER NAME/ DESCRIPTION DISPLAY SCREENS / DEFAULT SETTINGS Delay between sensing of the alarm condition and activation of Output Relay 1. An alarm condition must exist for longer than the delay to be activated. • • • Delay between sensing of the alarm condition and activation of Output Relay 6. An alarm condition must exist for longer than the delay to be activated. An alternate name (alias) can be assigned to the major Relay if desired.
PARAMETER NAME/ DESCRIPTION DISPLAY SCREENS / DEFAULT SETTINGS Displays the model number of the installed rectifier. NOTE: This information can be viewed for each rectifier installed by using the horizontal arrow keys. The output relay energized if Rectifier Fail 1-of-N alarm occurs. This is a special rectifier alarm group that signifies that one rectifier has at least one alarm condition.
PARAMETER NAME/ DESCRIPTION [MENU LOCATION] System High Voltage alarm Security Level {1} [SYSTEM/SET-ALM] System High Voltage Threshold Security Level {1} [SYSTEM/SET-ALM] System Low Temperature Alarm Security Level {1} [SYSTEM/SET-ALM] System Low Temperature Threshold Security Level {1} [SYSTEM/SET-ALM] System Low Voltage Alarm Security Level {1} [SYSTEM/SET-ALM] System Low Voltage Threshold Security Level {1} [SYSTEM/SET-ALM] System Temperature {Status Only} [STATUS] System Voltage {Status Only} [STATUS
PARAMETER NAME/ DESCRIPTION [MENU LOCATION] Time Security Level {1} [SYSTEM/DATE] Internal system clock time (24-hour format). Used as a date stamp in the event log.
Control Unit Menu Structure The complete menu structure shown in the order in which it is accessed from the control unit display is presented in outline form below. Each indentation to the right represents a menu level below the indicated title.
T o p L e v e l Second Level Third Level • • Hw Batt C Alm • • Hw Batt T Alm • • Hw Sys T Alm • • Hw LVD Alm • SYS: + LM SETUP DATE PIN 1 • • PIN 2 • • Address 1 • • Address 2 • • Address 3 • • Model • • Fahrenheit • • Cntrl Rev • • FW Version • • Display Type • • • SYS: + LY DATE OUT-RLY • SYS: + TE OUT-RLY IN-R Fourth Level Date Time SYS:OUT: + RLY-MAP ALIAS Out-Rly 1 Alm • • • Out-Rly 2 Alm • • • Out-Rly 3 Alm • • • Out-Rly 4 Alm • • • Out
T o p L e v e l Second Level Third Level Fourth Level • • • Out-Rly 3 • • • Out-Rly 4 • • • Out-Rly 5 • • • Out-Rly 6 • • • Relay Minor • • • Relay Major • SYS: + LY IN-RLY DIAG SYS:IN-: + RLY-MAP ALIAS In-Rly 1 Alm • • • In-Rly 2 Alm • • • In-Rly 3 Alm • • • In-Rly 4 Alm • • SYS:IN-: AP ALIAS + In-Rly 1 • • • In-Rly 2 • • • In-Rly 3 • • • In-Rly 4 • SYS: LY DIAG + Store Cfg • • Lamp Test • • Test Relay En • • Test Relay 1 • • Test R
T o p L e v e l Second Level • • • • Third Level • MOD:REC: AM INFO Fourth Level Rect Fail Comm + Rect # Desc • • • Rect # Curr • • • Rect # CL • • • Rect # Stdby • • • Rect # FF • • • Rect # RFA • MOD: + CT CIR-BKR FUSE MOD:CIR: + SET-ALM ALIAS Cir Bkr 1 Alm • • • Cir Bkr 2 Alm • • • Cir Bkr 3 Alm • • • • • • • • • • • • • • • Cir Bkr 70 Alm • • • Cir Bkr 71 Alm • • • Cir Bkr 72 Alm • • MOD:CIR: LM ALIAS + Cir Bkr 1 • • • Cir Bkr 2 •
T o p L e v e l Second Level Third Level Fourth Level • • • FUSE 6 Alm • • • FUSE 7 Alm • • • FUSE 8 Alm • • • FUSE 9 Alm • • • FUSE 10Alm • • • FUSE 11Alm • • • FUSE 12Alm • • • FUSE 13Alm • • • FUSE 14Alm • • • FUSE 15Alm • • • FUSE 16Alm • • MOD:FUSE: LM ALIAS + FUSE 1 • • • FUSE 2 • • • FUSE 3 • • • FUSE 4 • • • FUSE 5 • • • FUSE 6 • • • FUSE 7 • • • FUSE 8 • • • FUSE 9 • • • FUSE 10 • • • FUSE 11 • • • FUSE
T o p L e v e l • Second Level • Third Level MOD:LVD: LM PARAM Fourth Level + LVD 1 Trip • • • LVD 1 Reset • • • LVD 2 Trip • • • LVD 2 Reset MX28B 1200 + ES BATT PIN OEM BAT: + SET-ALM PARAM C 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 BAT: + LM PARAM COMP • Batt Float • • • BAT: AM COMP • • Comp TC • • Comp HKnee • • Comp LKnee
Front Panel LED Indicators Major (Red) On when Major Relay is de-energized* Minor (Yellow) On when Minor Relay is energized Normal (Green) On when no alarms are active ALM 1 (Red) On when Output Relay 1 is energized ALM 2 (Red) On when Output Relay 2 is energized ALM 3 (Red) On when Output Relay 3 is energized ALM 4 (Red) On when Output Relay 4 is energized ALM 5 (Red) On when Output Relay 5 is energized ALM 6 (Red) On when Output Relay 6 is energized MIN (Red) On when Minor Relay is ener
5.8. External Alarm Inputs (Input Relays) The controller can monitor any external device that uses a switch or relay to output status information. Connecting the external device to the input relay connections is the first step. The four external alarm inputs (also referred to as “Input Relay Alarms”) can be assigned a priority and routed or “mapped” to alarm output relays.
6 Remote Monitoring 6.1. Description Remote monitoring and control of the DC power system is accomplished through the use of the optional APC Network Management card. This card is a separate module mounted into the top panel of the system controller module. Complete documentation for the use of the management card accompanies the DC power system in the form of a small Quick Start Guide and a CD.
7 Preventive Maintenance Preventive Maintenance is typically performed on a quarterly basis. 7.1. Equipment 1. 4 Digit Voltmeter. 2. Clamp-on Ampere meter. 3. Standard Insulated tools. 7.2. Inspection Environmental Inspection 1. 2. 3. 4. Ensure the DC system environment is suitable for operation. Ensure that there is sufficient clearance around the system for service. Ensure that there is no sign of damage to the DC system.
a) DC Voltage Rating. b) DC Current Rating c) Interrupting Current Rating Battery Visual and Safety Inspection 1. Check that the battery temperature probe is firmly attached to the battery. 2. Check the mechanical integrity of the battery framing, racking, or cabinet. Tighten where necessary. 3. If there is a battery disconnect device fitted, ensure that it is properly connected and protected. 4. Check the general appearance and cleanliness of the battery. Clean if necessary.
Rectifier Current Share Test Verify that the highest rectifier current and the lowest current are within 5 amps. System Current Test Verify the System current equal to the total of the rectifier currents. System current should equal the total current of the loads as well as any battery current. Rectifier Alarm Test 1. Verify that all of the rectifiers report RFA Alarm is off. 2. Verify that the battery voltage reading on the voltmeter is negative (-)54.00 + 0.02Volts. 3.
Battery Temperature Test If the battery teperature probe is used in this system, verify that the battery temperature is correct. LVD Test 1. Verify that the Battery Float voltage is set to negative (-) 54.00 Volts via the control panel and verify the temperature compensation setting is at its default setting (disabled). 2. Enable the LVD’s that are installed. Note: In single-bay systems, only LVD1 is used. In multi-bay systems LVD1 and LVD2 are used in parallel. 3.
9. Ensure that all protective covers are replaced and that the battery is electrically nonhazardous to personnel that could be working in the vicinity. Detail any discrepancies. 10. Download the Cellcorder to a PC and create a data file for each battery string. Keep a copy of the results on disk. 7.4. Final Inspection: 6. Verify that the interior and exterior of the system is clean and free from debris. 7. Ensure all wires connected and bolts are properly tightened. 8.
8 Specifications The overall system specifications can vary, depending upon the number of rectifier modules. Note that some specification items are provided on a “per rectifier” basis and must be combined or totaled for a give system configuration. 8.1. AC Input 1MRF28H54BV Rectifiers Nominal Input Voltage 208, 230 VAC Input Voltage Range 176 – 264 VAC AC Frequency Range 45 – 65 Hz Apparent Power Factor 99% Typical, 98% Minimum Maximum Input Current (per Rectifier) 13.
8.2. DC Output (with either 1MRF28H54BV Rectifiers and 1MRF28H54BV50 Rectifiers) Nominal Output Voltage (factory set) 54.5 VDC Operating Voltage Range 44 – 58 VDC Rated Output Current (per Rectifier) 50 A Rated Output Power (per Rectifier) 2800 W (45ºC) Efficiency 91% Typical 8.3. Controls and Indicators Rectifiers Input Healthy LED AC power present. Output Healthy LED DC output voltage within operating range (-39.5 to –59.5 VDC). Output Current LED On when rectifier is supplying current.
Float / Boost/Equalize Switch Used to Control voltage on systems without a PSCU Float Trim Pot The float pot is used to adjust the default float voltage (54.5 VDC). Boost/Equalize Trim Pot The boost/equalize pot is used to adjust the default boost equalize voltage (57.5 VDC).
8.4. Mechanical Dimensions 84” high x 26” wide x 26” deep Weight Housing 400-600 lbs. (181-272 Kg) Rectifier (each) 11 lbs (5Kg) Color Dawn Gray Mounting Floor Mounting 8.5. Environmental Ambient Temperature Humidity Altitude (Operating) -45ºC to +55ºC (+65ºC with reduced power output) (Storage) -45ºC to +85ºC (Operating) 0 – 85% RH (non-condensing) (Storage) 0 – 95% RH (non-condensing) (Operating) 3000 m (9840 ft.) (Storage) 10000 m (39370 ft.) 8.6.
9 APC Worldwide Customer Support Customer Support for this or any other APC product is available at no charge. You can contact APC Customer Support in any of the following ways: • Use an APC web page to find answers to frequently asked questions (FAQs), to access documents in the APC Knowledge Base, and to submit customer support requests. o http://www.apc.
10 Limited Product Warranty The limited warranty provided by American Power Conversion Corporation ("APC") in this Statement of Limited Factory Warranty applies only to Products Buyer purchases for your commercial or industrial use in the ordinary course of Buyer's business.
