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MX28B-400
User Manual
52 pgs2.11 Mb0
User Manual
46 pgs615.92 Kb0

American Power Conversion MX28B-400 User Manual

MX28B400
+24 Vdc Power System
With Network Management
User’s Manual
Table of Contents
1.1. WARNING SYMBOLS .........................................................................................................1
1.2. GENERAL PRECAUTIONS: ..................................................................................................1
2.1. GENERAL INFORMATION....................................................................................................2
2.2. HOW TO USE THIS MANUAL ..............................................................................................4
3.1. UNPACKING EQUIPMENT ...................................................................................................5
3.2. MECHANICAL INSTALLATION ..............................................................................................5
Room / Location......................................................................................................................5
Mounting.................................................................................................................................5
Ventilation...............................................................................................................................6
3.3. AC POWER CONNECTIONS ...............................................................................................6
3.4. BATTERY CONNECTIONS ...................................................................................................7
Planning the Battery installation..............................................................................................7
Connecting the Cables ...........................................................................................................7
Battery Temperature Probe Installation ..................................................................................8
3.5. DC SYSTEM GROUNDING...........................................................................................9
3.6. DC POWER OUTPUT OVER-CURRENT PROTECTION..........................................................10
DC Circuit Breakers ..............................................................................................................10
Plug-in Circuit Breaker Installation........................................................................................12
Load Cable Size Considerations...........................................................................................12
Circuit Breaker Connections (1 to 50 Amps).........................................................................13
Circuit Breaker Connections (60-100 Amps) ........................................................................13
GMT Fuse Option .................................................................................................................14
3.7. M
Front Panel DB9 Connection ................................................................................................14
“Smart” Cable DB9 Connection ............................................................................................14
RJ45 Ethernet Connector .....................................................................................................15
Relay Output Connections....................................................................................................15
3.8. EXTERNAL ALARM INPUT CONNECTIONS ..........................................................................16
3.9. R
3.10. INITIAL POWER-UP AND CHECKOUT .................................................................................17
3.11. SYSTEM PARAMETERS VERIFICATION/ADJUSTMENT ..........................................................18
3.12. F
ONITORING AND RELAY OUTPUT CONNECTIONS .............................................................14
ECTIFIER MODULE INSTALLATION...................................................................................17
ULL SYSTEM POWER UP ...............................................................................................19
4.1. T
ECHNICAL DESCRIPTION................................................................................................20
4.2. RECTIFIER MANAGEMENT................................................................................................20
AC Input Power.....................................................................................................................20
DC Output Power..................................................................................................................20
MX28B400 +24 VDC User’s Manual Page ii
Rectifier alarms reporting......................................................................................................20
4.3. SYSTEM MANAGEMENT ...................................................................................................21
System Output Capacity .......................................................................................................21
System Voltage Control ........................................................................................................21
System Current.....................................................................................................................21
System Status and Alarm Reporting.....................................................................................21
4.4. DC DISTRIBUTION ..........................................................................................................22
4.5. BATTERY MANAGEMENT .................................................................................................22
Battery Charging and Protection...........................................................................................22
Battery Temperature Compensation.....................................................................................22
Battery/Load Low Voltage Disconnect ..................................................................................23
4.6. CONTROLS AND INDICATORS ...........................................................................................23
Front Panel User Interface....................................................................................................23
Parameter Locations, Descriptions, and Default Values.......................................................24
Control Unit Menu Structure .................................................................................................34
Front Panel LED Indicators...................................................................................................40
4.7. ALARM OUTPUTS (OUTPUT RELAYS)................................................................................41
4.8. EXTERNAL ALARM INPUTS (INPUT RELAYS) ......................................................................41
5.1. DESCRIPTION.................................................................................................................42
5.2. PHYSICAL CONNECTIONS ................................................................................................42
5.3. COMMAND AND MONITORING PROTOCOL .........................................................................42
6.1. AC INPUT ......................................................................................................................43
1MRF28H27BV Rectifiers.....................................................................................................43
1MRF28H27BV50 Rectifiers.................................................................................................43
6.2. DC OUTPUT (WITH EITHER RECTIFIER).............................................................................44
6.3. CONTROLS AND INDICATORS ...........................................................................................44
Rectifiers...............................................................................................................................44
Power Shelf Control Unit ......................................................................................................45
6.4. M
6.5. E
ECHANICAL .................................................................................................................46
NVIRONMENTAL ............................................................................................................46
6.6. COMPLIANCE .................................................................................................................46
MX28B400 +24 VDC User’s Manual Page iii
Revision History
Revision Date By Description
990-1809 Rev 1 02 MAR, 2004 BET Preliminary Release
Table of Figures
FIGURE 2.1-1 MX28B-400 +24 VDC POWER PLANT.............................................................................2
FIGURE 2.1-2 MX28B-400 +24 VDC SYSTEM WIRING DIAGRAM WITH BATTERY LVD.............3
FIGURE 3.4-1 BATTERY CABLE CONNECTION LOCATIONS............................................................7
FIGURE 3.4-2 BATTERY TEMPERATURE PROBE INSTALLATION ..................................................8
FIGURE 3.5-1 DC GROUND CONNECTION POINT ...............................................................................9
FIGURE 3.6-1 DC DISTRIBUTION (FRONT COVER REMOVED) ......................................................10
FIGURE 3.6-3. INSTALLATION OF CIRCUIT BREAKERS..................................................................12
FIGURE 3.6-4 STANDARD LUG FOR 1 TO 50A BREAKERS. .............................................................13
FFIGURE 3.6-5 ADAPTOR AND LUGS FOR 60-100 AMP BREAKERS ..............................................14
FIGURE 3.7-2 OUTPUT RELAY CONNECTIONS..................................................................................16
FIGURE 3.8-1 EXTERNAL ALARM INPUT DEFINITION ....................................................................16
FIGURE 3.8-2 EXTERNAL ALARM INPUT CONNECTIONS ..............................................................16
MX28B400 +24 VDC User’s Manual Page iv
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. General Precautions:
WARNING: The power plant is supplied from a nominal
220Vac, 50/60 Hz source. Keep the ac input enclosure cover in place when the system is operational or energized
WARNING: Hazardous energy levels are present on bare conductors in the distribution connection area of the plant. Accidental shorting of distribution conductors can cause arcing and high currents that can cause serious burns or other physical harm. It is recommended that:
• Any jewelry, rings or watches be removed while working
on this equipment.
• Handles of all wrenches, screwdrivers, cutters and pliers
are insulated.
WARNING: Ensure that all of the dc and external ac circuit breakers are in the OFF position prior to connecting service to the power plant. Confirm that all voltages have been removed including any battery sources before proceeding
.
Specific CAUTION and WARNING will be placed in manual where appropriate.
MX28B400 +24 VDC User’s Manual Page 1
2 Introduction
2.1. General Information
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.
The APC Model MX28B is a modular stand-alone + 24 Vdc power plant. It is configurable in such a manner that it will support most typical applications within the specified current ranges (400 amperes) without special application engineering or assistance. Distribution is included for up to 24 plug-in circuit breakers. These circuit breakers can be 1 to 100 amps, with 60-100 amp breakers requiring two positions and a circuit breaker adapter kit. An optional low voltage disconnect (LVD) can be provided on either the battery or the load side. An MX28B is shown in Figure 2.1-1. A system wiring diagram is shown in Figure 2.1-2.
Figure 2.1-1 MX28B-400 +24 Vdc Power Plant (with circuit breaker cover removed)
MX28B400 +24 VDC User’s Manual Page 2
Figure 2.1-2 MX28B-400 +24 Vdc System Wiring Diagram with Battery LVD
MX28B400 +24 VDC User’s Manual Page 3
2.2. How to Use This Manual
Each section of this manual can be read in any order and should provide a complete explanation of the subject described by the title. However, the sequence of the sections is designed to provide a typical step-by-step process for successful use of the equipment.
Safety First!
Introduction
Installation
Operation
Remote
Monitoring
Specifications
APC Worldwide
Customer Support
Warranty
Safety symbol description and general precautions.
Brief system preview and explanation of manual usage.
How to unpack, install and commission the equipment for initial
use.
Specifics of controls settings and indicators used to operate the
unit.
Special remote monitoring and control features described with
references to information on auxiliary equipment.
Power plant and rectifier specifications.
How to contact APC for customer support.
Equipment warranty terms and conditions.
MX28B400 +24 VDC User’s Manual Page 4
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.
CAUTION: Appropriate lifting techniques and safety equipment should be used to remove equipment from packing.
PLEASE RECYCLE: The shipping materials can be recycled. Please save them for later use or dispose accordingly.
3.2. Mechanical Installation
Room / Location
NOTE: The APC Model MX28B power plant is to be installed in a room, vault, or similar
enclosure that is accessible only to qualified persons in accordance with the NEC or the local authority having jurisdiction.
Prior to installation, drawings, floor loading requirements, external alarm points, ac service entrance, and grounding schemes should all be checked and confirmed. If batteries are to be mounted in a room separate from the power plant, careful attention should be paid to battery cable voltage drop effects. Environmental operating temperatures and ventilation/cooling considerations should also be noted, not just for the power system but also for all other equipment that may reside in the power room area.
Mounting
This unit can be front or mid-mounted on standard 23-inch rails.
MX28B400 +24 VDC User’s Manual Page 5
Ventilation
The rectifier modules for this system have fans that provide front-to-rear airflow for internal cooling. The MX28B housing should mounted such that there is free airflow to the front, top, and bottom of the unit. [Refer to Section 6.5 for environmental characteristics.] Free airflow should be ensured so that the power system can provide full power without de-rating.
3.3. AC Power Connections
WARNING: Ensure that all of the external dc and ac circuit breakers are in
the OFF position prior to connecting service to the power plant. Confirm that
The MX28B power plant requires the supply of nominal 230 Vac single-phase, 50/60 Hz power through individual external 20-amp circuit breakers to the ac input terminal block connections for each rectifier module in the system. Two rectifier modules are required to accommodate the full ac input voltage range. The 1MRF28H27BV rectifier is designed for the standard 208/220/240 Vac input service, while the 1MRF28H27BV50 is used for the 277 Vac input. The ac wiring, from the 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 right rear of the MX28B housing, is provided with two one-inch conduit entry holes and an access cover. Inside, a terminal strip for ac input power connection and a separate “Earth Ground” bar for connection of the safety ground wire(s) are provided. The terminal block(s) is labeled as Position 1 through Position 4 with each position having inputs designated “L1” and “L2/N” for connection of the 2 ac wires. Positions 1-4 correspond to the rectifier shelf positions from left to right.
The suggested wire size is #10 AWG rated at 90°C or higher; however, the ambient temperature and number of wires in a conduit must also be considered in accordance with NEC requirements. It is suggested that feeds for four rectifiers (8 wires) and one safety ground wire be run in a one-inch conduit; however, be sure to follow any local electrical wiring codes.
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.
all voltages have been removed including any battery sources before proceeding.
WARNING: The MX28B power plant is supplied from a nominal 230Vac, 60 Hz source. Keep the ac input enclosure in place when the system is
MX28B400 +24 VDC User’s Manual Page 6
operational or energized.
3.4. Battery Connections
WARNING: Hazardous energy levels are present on bare conductors in the
+24Vdc distribution connection area of the plant. Accidental shorting of distribution conductors can cause arcing and high currents that can cause serious burns or other physical harm. It is recommended that:
Planning the Battery installation
The battery cable(s) should be sized sufficiently large to limit the voltage drop from the power plant to the battery during charging per system design requirements. The cable(s) must also carry the full load current during battery operation. If assistance is required to determine the necessary cables for the application, contact your sales representative or APC.
An external fuse or circuit breaker (various options are available from APC) is recommended in the positive line (located at the battery end) to protect the cables from the battery to the power plant. The power plant can monitor auxiliary contacts from this breaker.
Connecting the Cables
• Any jewelry, rings or watches be removed while working on this
equipment.
• Handles of all wrenches, screwdrivers, cutters and pliers should be
insulated.
WARNING: Make certain that the battery polarity is correct when making connections to the power plant. Incorrect connection could cause severe
The battery cable connections are located at the top left rear of the unit as shown in Figure
3.4-1. The battery positive and battery negative connection buses each provide two sets of threaded 3/8”-16 holes on one-inch centers for connecting two-hole battery cable lugs. Connect the battery cables as applicable using 3/8-16 bolts (not provided) and tighten them with a torque wrench to 200 in-lbs (23 N-m).
equipment damage.
Figure 3.4-1 Battery Cable Connection Locations
MX28B400 +24 VDC User’s Manual Page 7
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. Plug the connector end of the temperature probe into J5 of the control unit backplane card. Route the cable as required positioning the probe on the selected battery cell. Remove the adhesive protection strip from the probe body and press the adhesive side of the probe on the battery cell cover.
Figure 3.4-2 Battery Temperature Probe Installation
MX28B400 +24 VDC User’s Manual Page 8
3.5. DC SYSTEM GROUNDING
The return bus for the power plant must be connected to the Central Office Ground. The left end of the return bus provides a pair of threaded 3/8-16 holes on 1-inch (25.4 m) centers for connection of a two-hole lugged cable to the Master Station Ground. Details for this connection should be provided in the site electrical grounding plans.
Figure 3.5-1 DC Ground Connection Point
MX28B400 +24 VDC User’s Manual Page 9
3.6. DC Power Output Over-Current Protection
DC Circuit Breakers
A standard 24-position plug-in circuit breaker tier provides +24 Vdc distribution. Various circuit breaker sizes from 1 to 100 amps are available, with 60-100 amp breakers requiring two positions and a circuit breaker adapter kit. The breaker tier is connected at its center to the +24 Vdc bus, and each side has a current capacity of 300A. It is therefore necessary to balance the load on the power plant to avoid overloading the output bus. Also when planning the output installation, take into consideration the configuration of the plant and the number of rectifiers installed.
Any combination of up to 24 single (1-50 Amp) or up to 12 double (60-100 Amp) breakers may be installed. Figure 3.6-1 shows the power plant’s distribution section with the front cover removed.
Figure 3.6-1 DC Distribution (Front Cover Removed)
Plug-in circuit breakers rated at 60A or more require two mounting positions and require a circuit breaker adapter, which is included in the circuit breaker kit. Adaptors are available with studs for #10-32 nuts on 5/8” centers, #10-32 nuts on ¾” centers, or ¼-20 nuts on 1” centers. The circuit breaker kit includes all necessary mounting hardware. Available plug-in circuit breakers and circuit breaker kits are shown in Figure 3.6-2.
MX28B400 +24 VDC User’s Manual Page 10
BREAKER
PART NUMBER ADAPTOR SIZE
RATING
1 A FFA-0014 None
3 A FFA-0015 None
5 A FFA-0016 None
10 A FFA-0017 None
20 A FFA-0018 None
30 A FFA-0019 None
40 A FFA-0020 None
50 A FFA-0025 None
60 A FFA-0021-1 #10 studs on 5/8” centers
60 A FFA-0021-2 #10 studs on ¾” centers
60 A FFA-0021-3 ¼” studs on 1” centers
70 A FFA-0022-1 #10 studs on 5/8” centers
70 A FFA-0022-2 #10 studs on ¾” centers
70 A FFA-0022-3 ¼” studs on 1” centers
80 A FFA-0023-1 #10 studs on 5/8” centers
80 A FFA-0023-2 #10 studs on ¾” centers
80 A FFA-0023-3 ¼” studs on 1” centers
100 A FFA-0024-1 #10 studs on 5/8” centers
100 A FFA-0024-2 #10 studs on ¾” centers
100 A FFA-0024-3 ¼” studs on 1” centers
Figure 3.6-2 Circuit Breaker Kits
MX28B400 +24 VDC User’s Manual Page 11
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).
2) Install the circuit breaker(s) by snapping the top terminal onto the upper bus bar and rotating
the unit down until the second terminal snaps onto the breaker termination post as shown in Figure 3.6-3 The breaker alarm terminals are designed to make contact with the alarm terminal board as the breaker is snapped into place.
3) Reattach the circuit breaker cover panel.
NOTE: Circuit breaker alarm contacts close when the circuit breaker is tripped but not when it is turned OFF.
Figure 3.6-3. Installation of Circuit Breakers
Load 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 and for constant power loads, 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.
MX28B400 +24 VDC User’s Manual Page 12
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