Generac MPSG350 User's Manual
Contents
1. Modular Power MPS System MPSG350 350 kW Standby Power Ratin 350 KW 60 Hz Prime Power Rating 280 KW 60 Hz Powered with Generac s 13 3 Natural Gas Engine Diesel Generator Diesel Generator Circuit Circuit Breaker gt Breaker gt Contactor Contactor Distribution Transfer Sw W Integral Control Power Manager Integrated Controller Layout FEATURES Diesel Generator Diesel Generator Circuit Circuit Breaker Breaker Contactor Contactor Control Wires UTILITY Power Manager System Controller Layout m The Generac Modular Paralleling system utilizes multiple small generators in a side by side parallel arrangement to achieve a larger combined power output m The proven 13 3 liter Generac generators can be combined up to 10 units to provide from 300 kW to 1 megawatts of reliable power m Paralleling System Features The paralleling function is controlled by Generac s field proven Power Manager Control utilizing contractor switching technology resulting in cost effective reliable paralleling The MPS control system provides automatic synchronization adjustable load sharing between generators reverse power protection and load shedding contacts m The optional cable interconnect cabinet is furnished with bus bar and lugs to allow easy cabling between the multiple gensets Recommended for 3 or more gensets m The Generac Power Manger Generator controller prov2. ansfer switch installations the PM SC interfaces with the PM GC to provide start stop commands based on utility power proportional load sharing and safe paralleling of each individual genset to the main bus or transfer switch Each individual genset has a built in heavy duty switch to complete the paralleling operation This switch and it s control system replace the high cost switchgear and motor operated circuit breakers associated with standard paralleling systems System Components Power Manager Generator Controller PM GC This control is installed on the generator set and monitors all the engine parameters including oil pressure coolant temperature overspeed kW and power factor It also controls the governor voltage regulator and the synchronizing connection to the bus Paralleling Switch Installed in the generator set connection box Heavy duty 3 pole solenoid actuated mechanically held with emergency trip to off position Rated at 400 amps and 1000 amps continuous 35 000 and 42 000 amps interrupting capacity Built in arc suppression Power Manager System Control PM SC Up to 3 primary transfer switches with up to 6 individual steps for load sequencing application or shedding with assignable kW values for each step in addition to the critical load ATS Unlimited number of secondary slave switches The PM SC is in an enclosure separate from the transfer switches Power Manager Integrated Control PM IC Integrated Con
3. es this area TOP VIEW 13 3 LITER Standard Enclosed units shown Sound attenuated package adds an 7 additional 26 to the length geig Mamoe arance Units can also be non enclosed for indoor installations O Electrical Connections AIR AND TOP VIEW this area 13 3 LITER r I I Le Typical Installations Area Space Requirements Units can be placed end to end side by side or wherever room is available The transfer switch or switches are generally placed close to the main electric service Consult State Federal and Local codes for specific installation requirements Power Connections are in one area in the left rear quadrant of the genset All controls are through a single 2 wire RS485 connection that can be daisy chained between generators DISTRIBUTED BY 2003 GENERAC POWER SYSTEMS INC Allrights reserved All specifications subject to change without notice Bulletin 0168230SBY MW 06 28 03
4. hat attains rated frequency and voltage is connected to the main bus or transfer switch terminals via the paralleling switch n the individual genset The remaining generators will synchronize with the bus and the respective paralleling switch will close into the bus When all the gensets are paralleled to the main bus the System or Integrated Controller will signal the transfer switch to transfer to the load If multiple transfer switches are installed the PM SC will connect these switches in 3 separate programmed steps If a NFPA requirement for 10 second start exists the first unit connects to the bus This causes the controller in a separate emergency transfer switch to immediately transfer to the NFPA load f a single generator fails load shed contacts are available to disconnect selected non critical loads If load conditions are reduced night time operation selected generators can be programmed off line When Utility supply returns the PM SC or PM IC will issue commands to transfer loads back to the Utility If then issues commands to the individual PM GC s to disconnect from the bus Each PM GC will operate its generator for the cool down period and then issue a shutdown command System Configuration Any KW configuration that equals the required load kW can be used The following page details a common engine configuration and the most economical configuration utilizing the MG150 MG200 But depending on load parameters a
5. ides complete engine monitoring and control along with alarm function and communication ability via a RS232 with a modem link to Generac s Genlink software or Modbus control A RS485 link is also available Flexibility The Modular Power systems flexibility allows for a wide variety of configurations including single or multiple automatic transfer switch arrangements roof application where better weight distribution is required and areas with specific height or depth limitations Since MPS gensets need not be located together space can be utilized wherever it is available Smaller units are also easier to transport and place on the jobsite Redundancy N 1 means greater reliability with MPS Backup power during scheduled maintenance Simplified service which reduces maintenance costs Single source service response from Generac s dealer network provides parts and service support for the entire unit You are never on your own when you own a Generac Power System GENERAC POWER SYSTEMS INC APPLICATION amp ENGINEERING DATA MPSG 350 Modular Paralleling System MPSG 350 System Description The Generac control system consists of the Power Manager System Controller PM SC or the Power Manager Integrated Controller PM IC along with the Power Manager Generator Controller PM GC For single transfer switch installations with the Generac Transfer Switch the PM IC is integral with the transfer switch For multiple tr
6. ny number of units up to 10 can be paralleled together Additional units and transfer switches can easily be added at a later date Ratings definitions See Generac Power Systems Power Rating Guidelines for specific definitions and application guidelines of the Standby Power Prime Power and Continuous Power Ratings Prime Power is not available at this time for MPS units TOTAL SYSTEM PARAMETERS 350 kW 437 5 kVA MPSG350 Output Voltage 60 Hz Rated Amps 120 208 1214 277 480 526 600 421 Combinations 1 200 kW 1 150 kW Motor Starting 208 Volt Parallel Wye Network 480 Volt Series Wye Network Inst Dip kVA Alternator Parameters Alternator Models 1 200 kW plus 1 150 kW 520 mm PMG Generac Alternators Sub Transient Reactance Transient Reactance Synchronous Reactance Zero Sequence Reactance Neg Sequence Reactance Time Constant Seconds Phase Sequence Voltage Balance Max Harmonics Efficiency 208 Volts 1 0 PF 480 Volts 1 0 PF 60 Load 90 40 90 70 80 Load 90 70 91 10 100 Load 90 50 90 90 Engine Fuel Consumption Natural Gas 950 BTU Cu Ft of Rated Load kW Cu Ft Hr Therms Hr 25 1 209 11 49 50 2 329 22 12 75 3 429 32 58 100 4 467 42 44 Heat Rejection to Coolant Full Load 1 206 000 BTU HTr Total for the 2 units 1 700 000 btu hr 1 506 000btu Hr Coolant Capacity total 15 4 gallons for the 2 units 77 Gallons per unit Inlet Cooling Air CFM 34 400 for the 3 units 17 200 for each unit Maxim
7. trol IC is installed in the same enclosure as the single Generac Transfer Switch Features PM IC amp PM SC Programmable and viewable via Genlink Provides up to 3 load shed contacts Failsafe protective functions for reverse power and synchronous paralleling control Exercise controller Backup battery RS232 for Modem connection RS485 Data Highway Transfer Switch PM IC System 1000 amp 1600 amp 2600 amp UL 3200 Amp non UL For smaller switch ratings use the PM SC control 42 000 AIC 1000 Amp 65 000 AIC 1600 Amp 85 000 AIC 2600 3200 Amp NEMA 12 3R enclosure 66 H x 36 W x 30 D 1000 Amp 78 H x 48 W x 24 D 1600 Amp 80 H x 48 W x 48 D 2600 3200 Amp Wire access top side bottom NEMA 3R or 4X Optional Wt 1250 lbs 1000 1600 Amp 1850 Ibs 2600 3200 Amp Connection Cabinet Optional NEMA 12 3R 80 H x 48 W x 48 D Lug capacity 16 for Generator Controller GC 12 for ATS Each lug accepts 4 4 to 750 MCM see Dwg 0D4482 Floor mounting Aluminum or Copper Wire compatible 4500 amp bus Sequence of Operations 1 The PM IC or a transfer switch in the PM SC configuration detects a Utility failure and issues a start command In the PM IC the command goes direct to each PM GC and with multiple transfer switches the command goes to the PM SC which then issues a start command to the PM GC s Each Generator will start on its own The first generator t
8. um External Press Drop on Rad 0 5 inches H2O Max air temp to radiator F derates apply 140 F Max ambient temperature F derates apply 120 F Combustion AirRequirements gt S O Flow at Rated Power cfm 1174 cfm Total 618 cfm 556 cfm Exhaust Flow FL 4017 CFM for the 2 units 2257 CFM 1760 CFM Exhaust Temperature Average 1128 Exhaust Outlet per engine 1 4 0 NPT Power Adjustments 350 kW Standb Temperature 2 for every 10 C above 40 C 1 0 for every 10 F above 104 F Altitude 0 7 for every 100 m above 1066 Meters 2 0 for every 1000 ft above 3500 Feet Note Temperatures will require necessary derates be applied Unless otherwise noted all data at 480 volt wye 1 0 PF GENERAC POWER SYSTEMS INC MPSG350 INTERCONNECTION DIAGRAM PMIC Power Manager Integrated Control PMSC Power Manager System Control Generator Generator Generator Power Gen Bus or Manager Connection System Cabinet Opt Control PM SC control control Power Manager Integrated Control Transfer Switch Control Wiring Power Wiring The PM IC is part of the Generac Transfer Switch The PM SC can control 3 transfer switches and any number of A connection box for the power wires is an option slave switches The main connection box would be configured for the size and number of wires for the specific application 1 200 kW 13 3 Liter 1 150 kW 13 3 Liter Gas Powered Generator ive Connections Modul
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