Page 3 - Page iii; Table of Contents; AC P
MX28B200/400 –48 VDC User’s Manual (990-9133) Page iii Table of Contents 1 SAFETY FIRST! ...................................................................................................................... 1 1.1. W ARNING S YMBOLS ......................................................................
Page 5 - Page v; Revision History; Revision; JNF; Table of Figures
MX28B200/400 –48 VDC User’s Manual (990-9133) Page v Revision History Revision Date By Description 1 31 JAN, 2002 JNF Converted to APC numbering 2 17 MAY, 2002 BET Updated Format Table of Figures FIGURE 2.1-1 MX28B-400 –48 VDC POWER PLANT ................................................................
Page 9 - Page 3; Introduction
MX28B200/400 –48 VDC User’s Manual (990-9133) Page 3 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 ...
Page 11 - Page 5
MX28B200/400 –48 VDC User’s Manual (990-9133) Page 5 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 ti tle. However, the sequence of the sections is designed to provide a typical step-by-step ...
Page 13 - Installation; Section 7
MX28B200/400 –48 VDC User’s Manual (990-9133) Page 7 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 c...
Page 14 - Ventilation; for environmental; WARNING; : Ensure that all of the external DC and AC circuit
Page 8 MX28B200/400 –48 VDC User’s Manual (990-9133) 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 6.6 ...
Page 15 - Page 9; : The MX28B DC power plant is supplied from a; : Hazardous energy levels are present on bare; : Make certain that the battery polarity is correct
MX28B200/400 –48 VDC User’s Manual (990-9133) Page 9 WARNING : The MX28B DC power plant is supplied from a nominal 220VAC, 60 Hz 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 co...
Page 16 - Battery Temperature Probe Installation
Page 10 MX28B200/400 –48 VDC User’s Manual (990-9133) Figure 3.4-1 Battery Cable Connection Locations 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 p...
Page 17 - shows the power plant’s DC distribution section with the
MX28B200/400 –48 VDC User’s Manual (990-9133) Page 11 3.6. DC Power Output Over-Current Protection DC Circuit Breakers A standard 24-position plug -in circuit breaker tier provides -48V distribution. Various circuit breaker sizes from 1 to 100 amps are available, with 60-100 amp breakers requiring t...
Page 19 - FUSE RATING
MX28B200/400 –48 VDC User’s Manual (990-9133) Page 13 DC GMT Fuses Eight GMT fused outputs are also available as an option. This option uses one of the 24 available circuit breaker positions. Connections to the GMT fuses are made at terminal block connectors labeled “F1” through “F8” that are locate...
Page 20 - Installation of Circuit Breakers and Fuses; CAUTION; During circuit breaker installation, carefully align the; Circuit breaker alarm contacts close when the circuit breaker is
Page 14 MX28B200/400 –48 VDC User’s Manual (990-9133) 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) Remov...
Page 21 - GMT Fuse Installation; to help determine; AMBIENT TEMPERATURE
MX28B200/400 –48 VDC User’s Manual (990-9133) Page 15 GMT Fuse Installation Fuse holders that accommodate GMT fuses are located on the interface card mounted in the top left side of the unit. Insert the fuse in the holder; observing the tripped indicator is correctly oriented. These fuse holders are...
Page 22 - Load return lugs are connected to the; front; of the return bus to prevent
Page 16 MX28B200/400 –48 VDC User’s Manual (990-9133) Load Connections should be made as shown in Figure 3.8-1 Figure 3.8-1 Standard lug for 1 to 50A breakers. NOTE: Load return lugs are connected to the front of the return bus to prevent interfering with the top cover of the unit. Circuit Breaker C...
Page 23 - GMT Fuse Connections; for Interface board connections.
MX28B200/400 –48 VDC User’s Manual (990-9133) Page 17 Figure 3.8-2 Adaptor and lugs for 60-100 Amp breakers 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 ...
Page 24 - Monitoring and Relay Output Connections; Front Panel DB9 Connection; for Output Relay
Page 18 MX28B200/400 –48 VDC User’s Manual (990-9133) 3.9. Monitoring and Relay Output Connections Front Panel DB9 Connection The front panel DB-9 connector is used to hook up a standard serial cable for the APC proprietary GUI that will be introduced at a later date. Do not hook up the special RS -...
Page 25 - RELAY; MINOR; for Interface board connections. Systems are shipped with jumper
MX28B200/400 –48 VDC User’s Manual (990-9133) Page 19 Output Relay Connections RELAY 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 __...
Page 28 - OFF
Page 22 MX28B200/400 –48 VDC User’s Manual (990-9133) 3.14. Full System Power Up To complete a full system power up, perform the following steps: 1) Turn OFF all the circuit breakers that supply ac power to the rectifiers in the MX28B DC power plant. Turn on the external circuit breaker from the bat...
Page 29 - Operation; DC Output Power
MX28B200/400 –48 VDC User’s Manual (990-9133) Page 23 4 Operation 4.1. Technical Description The MX28B-200/400 Power System is designed to supply safe –54 VDC primary power through the use of up to eight rectifier modules. In conjunction with an external battery string, it will supply backup power a...
Page 32 - LVD 1 Trip Voltage; Front Panel User Interface
Page 26 MX28B200/400 –48 VDC User’s Manual (990-9133) batteries, possible thermal runaway. Battery Maximum Recharge Current is set to the appropriate rate, which is usually based on the size of the battery plant in Ampere-hours. A typical recharge current setting is battery capacity (abbreviated as ...
Page 34 - Press the down arrow key once.; Parameter Locations, Descriptions, and Default Values
Page 28 MX28B200/400 –48 VDC User’s Manual (990-9133) Parameter Locations, Descriptions, and Default Values The location, description, and factory programmed default value for each of the MX28B system parameters is found in the table below. The table also shows all of the status and information scre...
Page 36 - Major
Page 30 MX28B200/400 –48 VDC User’s Manual (990-9133) PARAMETER NAME/ [MENU LOCATION] DESCRIPTION DISPLAY SCREENS / DEFAULT SETTINGS Circuit Breaker 1 Alias Security Level {1} [MODULES/CIRBKR/ALIAS] • • • Circuit Breaker 24 Alias Security Level {1} [MODULES/CIRBKR/ALIAS] An alternate name (alias) th...
Page 43 - Control Unit Menu Structure; T o p L e v e l S e c o n d L e v e l T h i r d L e v e l F o u r t h L e v e l
MX28B200/400 –48 VDC User’s Manual (990-9133) Page 37 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. ...
Page 48 - Front Panel LED Indicators
Page 42 MX28B200/400 –48 VDC User’s Manual (990-9133) T o p L e v e l S e c o n d L e v e l T h i r d L e v e l F o u r t h L e v e l • • Batt Max Rech • BAT: + AM COMP Comp Method • • Comp TC • • Comp HKnee • • Comp LKnee MX28B200/400 + ES BATT PIN OEM PIN MX28B200/400 + TT PIN OEM OEM R Offset • O...
Page 51 - Remote Monitoring
MX28B200/400 –48 VDC User’s Manual (990-9133) Page 45 5 Remote Monitoring 5.1. 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 control...
Page 53 - Specifications
MX28B200/400 –48 VDC User’s Manual (990-9133) Page 47 6 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 configuratio...
Page 54 - Rectifiers
Page 48 MX28B200/400 –48 VDC User’s Manual (990-9133) Rated Output Power (per Rectifier) 2800 W (45ºC) Efficiency 91% Typical 6.3. 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 L...
Page 55 - Power Shelf Control Unit
MX28B200/400 –48 VDC User’s Manual (990-9133) Page 49 voltage (54.5 VDC). Boost/Equalize Trim Pot The boost/equalize pot is used to adjust the default boost equalize voltage (57.5 VDC). 6.4. Controls and Indicators Power Shelf Control Unit Major (Red) On when Major Relay is de-energized* Minor (Yell...
Page 56 - Mounting
Page 50 MX28B200/400 –48 VDC User’s Manual (990-9133) Mounting Both front mounting on standard 23-inch rails and optional wall mounting are available .
Page 59 - APC Worldwide Customer Support; Submit customer support requests.; Latin America
MX28B200/400 –48 VDC User’s Manual (990-9133) Page 53 7 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 ...
Page 61 - Warranty
MX28B200/400 –48 VDC User’s Manual (990-9133) Page 55 8 Warranty General Provisions APC DC Network Solutions Inc. warrants the power equipment and components it manufactures or sells against defective materials and workmanship for a period of TWO (2) YEARS from the date of shipment. Warranty Returns...
