3.5 to 21 kVA N+1 Inverter IMPORTANT SAFETY INSTRUCTIONS SAVE THESE INSTRUCTIONS – This manual contains important instructions for the S4 Inverter Plant that must be followed during operation of the equipment. WARNING: ATTENTION: WARNUNG! WARNING: ATTENTION: WARNUNG! page ii Opening enclosures expose hazardous voltages.
NOTE: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment.
The liability of MGE UPS SYSTEMS, Inc. hereunder is limited to replacing or repairing at MGE UPS SYSTEMS, Inc.’s factory or on the job site at MGE UPS SYSTEMS, Inc.’s option, any part or parts which are defective, including labor, for a period of 12 months from the date of purchase. The MGE UPS SYSTEMS, Inc.
3.5 to 21 kVA N+1 Inverter How To Use This Manual: This manual is designed for ease of use and easy location of information. To quickly find the meaning of terms used within the text, look to the Glossary. To quickly find a specific topic, look at the Table of Contents.
Owner’s Manual CAUTION RECORD ALL SERIAL NUMBERS FOR THE S4 INVERTER AND COMPONENTS. THESE SERIAL NUMBERS WILL BE REQUIRED IF YOUR SYSTEM NEEDS SERVICE. KEEP THIS MANUAL IN A PLACE WHERE YOU CAN REFERENCE THE SERIAL NUMBERS IF SERVICE IS REQUIRED! S4 INVERTER UNIT SERIAL NUMBER: _________________________________________ INVERTER MODULE SERIAL NUMBER: _________________________________________ RECEIVER CABINET SERIAL NUMBER: ________________________________________...
3.5 to 21 kVA N+1 Inverter (This page left blank intentionally) page viii...
WARNING: ATTENTION: WARNUNG! Scope This manual provides technical information for installation, operation, and maintenance of MGE inverter systems series ranging from 3.5 kVA to 21 kVA. Please read this manual thoroughly before installing and operating the sys- tem. Please retain this manual for future reference. The manual is divided into three sections: Section 1 Introduction...
With a built-in static transfer switch, the inverter also forms a reliable and economical part of uninterruptible power supply systems in either on- line or off-line mode. This series employed modular design to provide N+1 redundancy, and twin controller cards to double reliability.
Table 1-2: Inverter Module Dimensions. Inverter Module HEIGHT (in/cm) 64004-9MSK1 Note: Weight: Six-mod receiver = 135 lbs. (61.2 kg) 1 UPS Module = 46 lbs. (20.09 kg) Total System Weight, 21 kVA system = 411 lbs. (186.4 kg) Electrical Specifications Electrical Specifications are subject to revision without notice.
3.5 to 21 kVA N+1 Inverter Efficiency 85% minimum, 88% typical (on-line mode); 97% typical (off-line mode) at full kVA/Watt load. Power Factor Rated kVA is available over a power factor range of 0.6 lagging to 0.6 leading at nominal volt- age.
Environmental Specifications Operating Temperature Shipping Temperature Storage Temperature Operating Humidity Operating Altitude Audible Noise Cooling 1.5.1 Thermal Dissipation Heat rejection: 602.28 BTU/Hr for each rated KW of the inverter system. This is based on an inverter efficiency of 85% at full load and does not include load dissipation. kVA rating Watts BTU/Hr...
3.5 to 21 kVA N+1 Inverter (This page left blank intentionally.) page 1 — 6 Introduction...
(bill of lading) prior to sign- ing for receipt of equipment. ALL CLAIMS FOR SHIPPING DAMAGE MUST BE FILED DIRECTLY WITH THE CARRIER. Replacements for damaged components should be ordered through MGE UPS SYSTEMS. 2.1.1 Handling IMPORTANT: The equipment can be lifted from the top, using the eye-bolts;...
3.5 to 21 kVA N+1 Inverter Mechanical Mounting The equipment can be floor mounted or rack mounted in a 19” (48.3 cm), 23” (58.4 cm), or 25” (63.5 cm) rack. Optional mounting bracket kits can be ordered for rack mounting in a 25” (63.5 cm) or 26” (66.0 cm) rack.
Figure 2-2: Front View, 7 kVA, System Component Description. WARNING: Disconnect AC (Mains) and DC supply before removing this cover. Alarm Panel DC INPUT WARNING! OPEN BREAKER BEFORE REMOVING MODULE Cooling Fan Assembly 3.5 kVA Inverter Module WARNING: Disconnect AC (Mains) and DC supply before removing this cover.
3.5 to 21 kVA N+1 Inverter Wiring Connections Line to Neutral Units Note: For Line to Line units please skip to section 2.7, page 2—10. 2.4.1 Grounding For safety and proper operation of the unit, including maximum attenuation of electrical noise, suitable grounding is required.
2.5.2 DC Input Normal: -48VDC Operating Range: -39.5 VDC to -57VDC This system is designed for battery systems with the positive terminal Earth Ground. All DC breakers are in the negative DC lines. The system DC terminals are isolated from Earth Ground. 2.5.3 DC Input Circuit Breaker Due to tremendous amounts of short circuit current available (in excess of 1000A for as long as several minutes!)
2.5.4 Connections All DC input connections are made through the knock-outs, located in the top or left side panel. Refer to Figure 2- 1. Make sure that the upstream source DC circuit breaker and AC circuit breaker (if applicable) supplying the invert- er are in the off (or open) position.
3.5 to 21 kVA N+1 Inverter The utility input and output cables are connected to a screw type terminal block. Connect the ground wires first, then the neutral wires, then connect the AC input wire (if applicable) and the AC output wire. A separate, optional Maintenance Bypass unit and a Power Distribution panel (200A Square D “QO”...
Software Configuration Set-Up The factory default configurations of the inverter plant is: 120V, 60Hz, Utility voltage connected and Mode of oper- ation is Online. If the factory configuration is different, the inverter will ship with marking that will describe the invert- er plant configuration.
3.5 to 21 kVA N+1 Inverter 2.6.3 Unit kVA Rating ID Label For kVA rating see the inverter ID label. Use the label kVA rating, regardless of the number of inverter modules installed. The processor will detect and display the number of modules installed and the number of modules that are “ON”...
Wiring Connections Line to Line Units Note: For Line to Neutral units continue to section 2.11, page 2—17. 2.7.1 Grounding For safety and proper operation of the unit, including maximum attenuation of electrical noise, suitable grounding is required. A separate grounding electrode conductor should be connected from the safety ground (GND) terminal to a nearby grounding electrode, and should be sized per National Electrical Code Article 250-94.
3.5 to 21 kVA N+1 Inverter 2.8.3 DC Input Circuit Breaker Due to tremendous amounts of short circuit current available (in excess of 1000A for as long as several minutes!) from bank(s) of batteries, that supply electrical power to inverter systems, it is extremely important to connect a properly sized DC circuit breaker at the DC input cable that feeds the inverter system.
3.5 to 21 kVA N+1 Inverter 2.8.4 Connections All DC input connections are made through the knock-outs, located in the top or left side panel. Refer to Figure 2- 1. Make sure that the upstream source DC circuit breaker and AC circuit breaker (if applicable) supplying the invert- er are in the off (or open) position.
Figure 2-7: Line To Line Setup Screen. Line To Line Inverter Configuration Rack kVA rating 14.0 Inverter voltage Inverter frequency 50 hz 60 hz Save After the selections are complete, click on the Save button. The data will be sent to the appropriate address in the controllers “EEROM”.
3.5 to 21 kVA N+1 Inverter 2.10 Redundant Controller Set-Up After making sure the 48VDC power has been removed from the unit, remove the two Phillips head screws from the display panel as above. Re-install the top controller printed board that was previously partially removed. Using the circuit board retaining bracket, disengage the bottom controller board from its connector.
2.11 Indicators and Controls There are six LED indicators divided into three groups – DS1 and DS2, DS3 and DS4, DS5 and DS6 - on the dis- play front panel. DS1 and DS2 are indicators of controller A; DS3 and DS4 are indicators for controller B; DS5 and DS6 are for output capacitors fuse indicators.
3.5 to 21 kVA N+1 Inverter Figure 2-9: S4 Inverter Components. WARNING: Alarm Panel DC INPUT WARNING! OPEN BREAKER BEFORE Cooling Fan REMOVING MODULE Assembly 3.5 kVA Inverter Module WARNING: Disconnect AC (Mains) and DC supply before removing this cover.
2.12 Remote Alarm The system provides three alarm signals, namely, Utility alarm, Minor alarm, and Major alarm. Utility alarm – Utility alarm is ON when utility input voltage is lost/out of tolerance. Minor alarm – The system sends out this signal to indicate something is not functioning properly, but invert- er can still maintain the load.
3.5 to 21 kVA N+1 Inverter 2.13 Start-Up Sequence Confirm that all power modules’ ON/OFF circuit breakers are set to the OFF position. On the LCD “Display” panel, be sure inverter switch SW1 is set at STANDBY position. 2.13.1 Power-Up Procedure Turn the main source DC input circuit breaker ON to apply 48VC to the system.
M a i n t e n a n c e A d j u s t m e n t a n d Tr o u b l e s h o o t i n g CAUTION: Troubleshooting the static inverter should be done only by qualified electronic technicians.
3.5 to 21 kVA N+1 Inverter Scope This section describes the maintenance and service of the S4 Inverter, including safety instructions, preventive maintenance, descriptions of replacement kits, and a troubleshooting table. Safety Instructions for Servicing IMPORTANT SAFETY INSTRUCTIONS FOR INVERTER SERVICING SHOULD BE PERFORMED OR SUPER- VISED BY QUALIFIED PERSONNEL ONLY.
Equipment Adjustment and Calibration The equipment is factory adjusted and, normally, no further adjustments and calibration are required. However, in the course of repair, components may have to be changed that will require configuration of the equipment. These configurations should only be made by a qualified technician. Air Intake Cleaning Inspect the air intake and exhaust openings for blockage.
3.5 to 21 kVA N+1 Inverter Replacement Parts MGE offers a complete spare parts kit for each model number. Spare parts kits include the inverter modules. Parts (those included in the spare parts kit) can be ordered individually or as a complete parts kit. To order on individual part, give the full description along with the complete model number and serial number of the inverter.
Redundant Microprocessor (72-153588-00) Installation/Configuration Follow this procedure to replace or add a microprocessor board to the S4 Inverter. Only one microprocessor can be configured at a time. To configure a microprocessor, install only that microprocessor board in the inverter receiver. The redundant microprocessor board is factory calibrated and pre-configured.
AC Output Circuit Breaker A Power Distribution Panel is available from MGE UPS SYSTEMS at a nominal cost. Order part number 6421P-9 for 14 or 21 kVA units, or 6210-0AD for the 7 kVA, which will accommodate up to 20/24 single-pole circuit breakers, “Square-D”...
3.11 Troubleshooting Guide After having thoroughly reexamined the installation and setup of the system, and still found it un-operational, user can follow Table 3-2 to identify a problem, its cause, and recommendations for fixing it. Table 3-2: Troubleshooting table. Problem Display panel not illuminated No output voltage System starts, then shuts...
3.5 to 21 kVA N+1 Inverter (This page left blank intentionally) page 3 — 8 Maintenance Adjustment and Troubleshooting...
Symbols Definition/Meaning And/or. Plus or Minus. ≤ Equal to or less than. Number. °C Degree Celsius. °F Degree Fahrenheit. Ø Phase angle. Ω Ohm; unit of resistance. ® Trade Mark. Second. Normal sequence of phase (clockwise) in three-phase power. AC or ac Alternating current, also implies root-mean-square (rms).
3.5 to 21 kVA N+1 Inverter BYPASS See “Static Transfer switch”. Bypass Maintenance bypass; wrap-around manual maintenance bypass using the optional bypass cir- cuit breaker Q3BP in conjunction with circuit breaker Q4S and isolation circuit breaker Q5N. Bypass AC Input Mains 2.
Ground (safety). Hertz, frequency measurement unit, 1Hz is one cycle per second. Inverter mode See “on-line” mode. Current. International Electrotechnical Commission. IEEE Institute of Electrical and Electronic Engineers. Input branch circuit The input circuit from the building power panel to the equipment. Inverter An electrical circuit that generates an AC voltage source from a DC voltage source.
Refers to an electronic technician qualified to maintain and repair electronic equipment. Not necessarily qualified to install electrical wiring. Test connector DB-9 type connector on the LCD panel allowing MGE UPS SYSTEMS Customer Support Service technician to access programmable and diagnostic features of the system. Test/Maintenance Mode Maintenance bypass circuit breaker is closed and system output circuit breaker is open.
STREET ADDRESS ___________________________________________________________ CITY ___________________________________ STATE ___________ ZIP ______________ I would like to order ________ (quantity @ $50.00 each) additional copies of the: 3.5 to 21 kVA N+1 Inverter I would like to report the following problems with this document: Reorder form...
w w w . m g e u p s . c o m 1 6 6 0 S c e n i c Av e n u e , C o s t a M e s a , C a l i f o r n i a 9 2 6 2 6 • ( 7 1 4 ) 5 5 7 - 1 6 3 6...