Owner Manual Transfer Switch RA112N3 (Spec A) RA212N3 (Spec A) RA412N3 (Spec A) RA112S3 (Spec A) RA212S3 (Spec A) RA412S3 (Spec A) English Original Instructions 8-2019 A046S594 (Issue 19)
Table of Contents 1. IMPORTANT SAFETY INSTRUCTIONS ....................................................................................... 1.1 Warning, Caution, and Note Styles Used in This Manual ..................................................... 1.2 General Information ................................................................................................................ 1.2.1 Safety Precautions ...................................................................................................
Table of Contents 8-2019 5.2 Hardware Torque Specifications........................................................................................... 5.3 Switch Removal and Replacement Procedure ..................................................................... 5.3.1 Disconnect AC Power ................................................................................................ 5.3.2 Transfer Switch Assembly Removal .......................................................................... 5.3.
1 IMPORTANT SAFETY INSTRUCTIONS SAVE THESE INSTRUCTIONS. This manual contains important instructions that should be followed during installation and maintenance of the generator set and batteries. Safe and efficient operation can be achieved only if the equipment is properly operated and maintained. Many accidents are caused by failure to follow fundamental rules and precautions. 1.
1. IMPORTANT SAFETY INSTRUCTIONS 8-2019 DANGER This symbol warns of immediate hazards that will result in severe personal injury or death. WARNING This symbol refers to a hazard or unsafe practice that can result in severe personal injury or death. CAUTION This symbol refers to a hazard or unsafe practice that can result in personal injury or product or property damage. 1.2.
8-2019 1.3.1 1. IMPORTANT SAFETY INSTRUCTIONS AC Supply and Isolation NOTICE Local electrical codes and regulations (for example, BS EN 12601:2010 Reciprocating internal combustion engine driven generating sets) may require the installation of a disconnect means for the generator set, either on the generator set or where the generator set conductors enter a facility. NOTICE The AC supply must have the correct over current and earth fault protection according to local electrical codes and regulations.
1. IMPORTANT SAFETY INSTRUCTIONS 8-2019 This page is intentionally blank. Copyright © 2019 Cummins Inc.
2 Introduction 2.1 Owner Manual This manual covers models produced under the Cummins Inc. brand names. This manual provides information necessary for operation, installation, and service of RA Series transfer switches. This manual also includes parts information. This is an open transition transfer switch which does not include an integral automatic transfer switch (ATS) control. With an open transition switch, there is never a time when both sources are supplying power to the load.
2. Introduction 8-2019 FIGURE 1. RA112N3 AND RA212N3 NON-SERVICE ENTRANCE TRANSFER SWITCH (WITH DOOR PANEL REMOVED) Copyright © 2019 Cummins Inc.
8-2019 2. Introduction FIGURE 2. RA412N3 NON-SERVICE ENTRANCE TRANSFER SWITCH (WITH DOOR PANEL REMOVED) A046S594 (Issue 19) 7 Copyright © 2019 Cummins Inc.
2. Introduction 8-2019 FIGURE 3. RA112S3 AND RA212S3 SERVICE ENTRANCE TRANSFER SWITCH (WITH DOOR PANEL REMOVED) Copyright © 2019 Cummins Inc.
8-2019 2. Introduction FIGURE 4. RA412S3 SERVICE ENTRANCE TRANSFER SWITCH (WITH DOOR PANEL REMOVED) A046S594 (Issue 19) 9 Copyright © 2019 Cummins Inc.
2. Introduction 2.2 8-2019 Transfer Switch Application Transfer switches are an essential part of a building's standby or emergency power system. The utility line (normal power), is backed up by a generator set (emergency power). The transfer switch switches the electrical load from one source to the other. The load is connected to the common of the ATS (Figure 5). Under normal conditions, the load is supplied with power from the utility (as illustrated).
8-2019 2. Introduction 4. Transfers the load to the generator set 5. Senses the return of utility power 6. Sends utility available signal to generator set 7. Receives retransfer command from generator set control 8. Retransfers the load to the utility The transfer switch design is intended to signal when the utility voltage is not present and when it returns. The utility sense relay coil will energize or stay energized at voltages other than nominal.
2. Introduction 8-2019 The nameplates for the RA Series transfer switches are located inside the cabinet in the following locations: • RA112N3, RA212N3, RA112S3, and RA212S3 transfer switches: On the upper right side (see Figure 7 and Figure 9).
8-2019 2. Introduction FIGURE 8. RA412N3 NON-SERVICE ENTRANCE NAMEPLATE A046S594 (Issue 19) 13 Copyright © 2019 Cummins Inc.
2. Introduction 8-2019 FIGURE 9. RA112S3 AND RA212S3 SERVICE ENTRANCE NAMEPLATE Copyright © 2019 Cummins Inc.
8-2019 2. Introduction FIGURE 10. A046S594 (Issue 19) RA412S3 SERVICE ENTRANCE NAMEPLATE 15 Copyright © 2019 Cummins Inc.
2. Introduction 2.5 8-2019 Manufacturing Facilities U.S. and CANADA EMEA, CIS EMEA, CIS Cummins Inc. 1400 73rd Ave. NE Minneapolis, MN 55432 USA Cummins Inc. Columbus Avenue Manston Park Manston, Ramsgate Kent CT12 5BF United Kingdom Cummins Inc.
8-2019 2. Introduction Outside the U.S. and Canada Refer to www.cummins.com/support and select Distributor Locator, or ask.powergen@cummins.com. send an email to WARNING Removing the front door will expose the operator to hazardous voltage. Ensure that both sources are de-energized and locked out prior to removing the door. • Non-service entrance models: A model and serial number label is located on the inner back of the enclosure on the upper left side (see Figure 1 and Figure 2).
2. Introduction 8-2019 FIGURE 12. Copyright © 2019 Cummins Inc.
8-2019 2. Introduction FIGURE 13. 2.6 RA412S3 SERVICE ENTRANCE MODEL Installation Overview These installation recommendations apply to typical installations. Whenever possible, these recommendations also cover factory designed options or modifications. However, because of the many variables in any installation, it is not possible to provide specific recommendations for every situation. If there are any questions not answered by this manual, contact your nearest Cummins Inc. distributor for assistance.
2. Introduction 2.6.1 8-2019 Application and Installation Installations must be carefully planned and correctly installed for proper operation. This involves two essential elements: application and installation. Application refers to the design of the complete standby power system that usually includes power distribution equipment, transfer switches, ventilation equipment, mounting pads, cooling systems, exhaust systems, and fuel systems.
3 Installation 3.1 Installation - Mounting 3.1.1 Introduction Proper storage, installation, operation, and maintenance helps to increase the life of the transfer switch. Installation is to be done only by licensed certified electricians. WARNING AC power within the cabinet presents a shock hazard that can cause severe personal injury or death. Incorrect installation, service, or parts replacement can result in severe personal injury, death, and/or equipment damage.
3. Installation 8-2019 Typical installations of a transfer switch are shown in Figure 17 and Figure 19. Cabinet dimensions and weights are listed in Table 3. Choose a vibration-free mounting surface that supports the weight of the switch. Avoid locations that are near flammable liquids or gases, or are hot, moist, or dusty. WARNING An electrical arc occurs during transfer that can ignite a flammable atmosphere, resulting in severe personal injury or death.
8-2019 3. Installation No. Description No. Description 1 Utility Source 6 Circuit Breaker 2 Utility Panel 7 Generator Source 3 Loads 8 Loads 4 Circuit Breaker 9 Distribution Panel 5 Transfer Switch FIGURE 15. A046S594 (Issue 19) PARTIAL COVERAGE SYSTEM (SERVICE ENTRANCE MODEL) 23 Copyright © 2019 Cummins Inc.
3. Installation 8-2019 No. Description No. Description 1 Utility Source 5 Generator Source 2 Circuit Breaker 6 All Loads 3 Transfer Switch 7 Main Breaker Panel 4 Circuit Breaker FIGURE 16. TOTAL COVERAGE SYSTEM (NON-SERVICE ENTRANCE MODEL) Copyright © 2019 Cummins Inc.
8-2019 3. Installation No. Description No. Description 1 Cummins Standby Generator 3 Automatic Transfer Panel 2 Service Entrance Box 4 Main Breaker Panel FIGURE 17. A046S594 (Issue 19) TYPICAL WALL-MOUNT INSTALLATION OF NON-SERVICE ENTRANCE MODELS 25 Copyright © 2019 Cummins Inc.
3. Installation 8-2019 No. Description No. Description 1 Utility Source 5 Generator Source 2 Circuit Breaker 6 All Loads 3 Transfer Switch 7 Main Breaker Panel 4 Circuit Breaker FIGURE 18. Copyright © 2019 Cummins Inc.
8-2019 3. Installation No. Description 1 Cummins Standby Generator 2 Automatic Transfer Panel FIGURE 19. No. 3 Description Main Breaker Panel TYPICAL WALL-MOUNT INSTALLATION OF SERVICE ENTRANCE MODELS TABLE 3. APPROXIMATE CABINET DIMENSIONS Switch Current Rating Height Width Depth Weight 100 Amp NSE 24.0 in (619 mm) 17.0 in (433 mm) 7.1 in (181 mm) 33 lb (15 kg) 200 Amp NSE 27.1 in (688 mm) 18.2 in (463 mm) 7.1 in (181 mm) 46 lb (21 kg) 100 and 200 Amp SE 23.3 in (591 mm) 19.
3. Installation 8-2019 2. Check the location to be sure that no wires or plumbing, gas, or exhaust lines run behind the wall. NOTICE For Service Entrance models with integrated circuit breakers, the National Electric Code stipulates that the installed height of the circuit breaker selector switch is not more than 6 ft 7 in. above the floor, grade, or platform. 3.
8-2019 3. Installation CAUTION Installation debris can cause equipment failure and damage. Use extreme care to keep drill chips and filings out of the relays, contacts, and other parts of the automatic transfer switch when mounting or connecting conduit. Screwdrivers should be used carefully to prevent damage to components. When installing conduit, observe the following precautions: 1. The RA Series transfer switch includes cutouts on the bottom of the cabinet for wiring.
3. Installation 8-2019 4. Connect power cables of sufficient size to carry rated current from the line, load, and generator directly to the transfer switch terminals or circuit breaker(s), which are marked A and B. A neutral bar is standard on the switches. For wire sizes and torque specifications, see the tables below. TABLE 4.
8-2019 3. Installation TABLE 6. SCREW TYPE TERMINALS AND TORQUE VALUES FOR SERVICE ENTRANCE MODEL POWER CONNECTIONS (NEUTRAL TERMINALS, GENERATOR NEUTRAL TERMINALS, AND GROUND TERMINALS) Terminal Description Switch Size (Amps) Neutral Terminals No. of Cables Range of Tightening Wire Torque Sizes Generator Neutral Terminals No. of Cables Range of Tightening Wire Torque Sizes Ground Terminals No.
3. Installation No. 8-2019 Description No. Description 1 Control Relay 3 Socket 2 Utility Sense Relay 4 TB4 FIGURE 20. CONTROL WIRING CONNECTIONS 3.2.2.2 Connecting the Transfer Switch to the Generator WARNING AC voltages and currents present an electrical shock hazard that can cause severe personal injury or death. Disconnect the AC power source. Make sure the generator set is not running and cannot be started.
8-2019 3. Installation TABLE 7. MAXIMUM WIRE LENGTH BY WIRE SIZE Wire Size (AWG) Distance in Feet (One Way) 16 125 14 200 12 300 10 500 The transfer switches are factory wired to provide Ground (B-) signals for all customer connections: 1. N/C or N/O Utility Source Available Indicators: Ground (B-) present when Utility Source is available (TB4-2); Ground (B-) present when Utility Source is not available (TB4-1). 2.
3. Installation 8-2019 NOTICE The mechanism is shipped in the Utility side position. For service entrance transfer switches, the circuit breaker is shipped in the Off position. Copyright © 2019 Cummins Inc.
4 Troubleshooting 4.1 Introduction This section describes troubleshooting issues, as well as the sequence of events for transfer switch operations that do not include a controller. 4.2 Troubleshooting Procedures for Experienced Service Personnel This section describes a typical transfer switch sequence of events, and provides detailed troubleshooting procedures for experienced service personnel. The troubleshooting procedures use conditional schematics and symptoms to diagnose all possible problems.
4. Troubleshooting 4.2.2 8-2019 Generator-to-Utility Sequence of Events The following steps describe what normally happens when the transfer switch is connected to the generator, utility power returns, and the switch moves from the Generator position to the Utility position. 1. The utility returns. 2. K2 utility sense relay energizes, opening K2-12/11 and closing K2-14/11, removing the ground (B-) signal from TB4-1 and applying ground (B-) to TB4-2. 3.
8-2019 4.2.5 4. Troubleshooting Troubleshooting for Transfer Switches For information on the generator controller indicator fault signals, refer to the generator service manual. The tables below list troubleshooting issues for RA Series transfer switches. WARNING AC power within the cabinet and the rear side of the cabinet door presents a shock hazard that can cause severe personal injury or death.
4. Troubleshooting 8-2019 TABLE 8. TROUBLESHOOTING THE TRANSFER SWITCH (PROBLEM #1) Problem The transfer switch failed to transfer to the generator Possible Cause Corrective Action 1. The K1 relay coil may not have received a ground (B-) signal from the controller. 2. K1 relay may malfunction. 3. There may be a defective wire. 4. The switch mechanism solenoid may be burnt out. 5. There may be loose or broken parts within the switch mechanism. 6.
8-2019 4. Troubleshooting TABLE 9. TROUBLESHOOTING THE TRANSFER SWITCH (PROBLEM #2) Problem The transfer switch failed to transfer to the utility Possible Cause Corrective Action 1. The Utility source may not be present. 2. The K2 relay is faulty — used to detect if utility voltage is present. 3. The K1 relay coil may not have received a ground signal 4. K1 relay may malfunction. 5. There may be a defective wire. 6. The switch mechanism solenoid may be burnt out. 7.
4. Troubleshooting 8-2019 TABLE 10. TROUBLESHOOTING THE TRANSFER SWITCH (PROBLEM #3) Problem Possible Cause Corrective Action Transfer switch signal failure 1. No feedback to indicate switch position either on Utility or Generator side. 2. The ASW or BSW limit switch may be faulty. 1. Check the wiring connection and verify the signal. 2. Replace the limit switch. Copyright © 2019 Cummins Inc.
5 Transfer Switch Service 5.1 Introduction This section covers the removal and replacement procedures for transfer switch components. NOTICE For servicing purposes, each transfer switch assembly is removed and replaced as a single component; there are no serviceable sub-components. 5.2 Hardware Torque Specifications Unless otherwise stated, use the following recommendations when torquing hardware: TABLE 11.
5. Transfer Switch Service 8-2019 WARNING If the cabinet must be opened for any reason, disconnect AC power to the automatic transfer switch. If the instructions require otherwise, use extreme caution due to the danger of shock hazard. WARNING Ignition of explosive battery gases can cause severe personal injury. Do not smoke or cause any spark, arc, or flame while servicing batteries.
8-2019 5. Transfer Switch Service • Loosen and remove the two screws, nuts, and washers securing the bracket at the load and emergency side (bottom) of the switch. • Loosen and remove all M6 nuts and lock washers securing the switch to the rear wall of the cabinet. • Remove the switch and bottom bracket from the cabinet. d. Mark the busbar of each phase of the Utility/Generator and Load. Then remove all of the busbars from the old switch.
5. Transfer Switch Service 5.3.3 8-2019 Transfer Switch Replacement CAUTION Carefully follow all hardware torque requirements to avoid damage to parts. 1. RA112N3, RA212N3, RA112S3, and RA212S3 transfer switch replacement only: a. Install the busbars on the new switch in accordance with the markings. Make sure that the long end of the busbar is connected to the breaker. b. Use the hardware that was previously removed to install the new switch in the cabinet. Torque the M6 nuts to 5.
8-2019 5. Transfer Switch Service WARNING Ignition of explosive battery gases can cause severe personal injury. Do not smoke or cause any spark, arc, or flame while servicing batteries. WARNING Batteries emit hydrogen, a highly explosive gas. Thoroughly ventilate the battery compartment before connecting battery cables. Connect the negative (–) cable (s) first to reduce the risk of arcing. 3. Reconnect utility power (Normal) and generator set power (Emergency). 4.
5. Transfer Switch Service No. 8-2019 Description No. Description 1 Hex Head Screw 5 Ring Terminal 2 Ring Terminal 6 Hex Head Screw 3 Hex Head Screw 7 Switch Mechanism 4 Hex Head Screw 8 Cabinet FIGURE 21. INTERIOR COMPONENTS FOR RA112N3 AND RA212N3 NON-SERVICE ENTRANCE MODELS Copyright © 2019 Cummins Inc.
8-2019 5. Transfer Switch Service No. Description No. Description 1 Switch Mechanism 5 Ring Terminal Detail (Shown from Bottom View) 2 M8 Bolts and Washers 6 M6 Screws and Lock Washers 3 Cabinet 7 M6 Nuts 4 M6 Bolts FIGURE 22. A046S594 (Issue 19) INTERIOR COMPONENTS FOR RA412N3 NON-SERVICE ENTRANCE MODELS 47 Copyright © 2019 Cummins Inc.
5. Transfer Switch Service No. 8-2019 Description No. Description 1 Hex Head Screws 7 Hex Head Screws 2 Busbar 8 Cabinet 3 Hex Head Screw 9 Ring Terminal 4 Busbars 10 Hex Nut 5 Hex Nut 11 Switch Mechanism 6 Circuit Breaker 12 Busbars FIGURE 23. INTERIOR COMPONENTS FOR RA112S3 AND RA212S3 SERVICE ENTRANCE MODELS Copyright © 2019 Cummins Inc.
8-2019 5. Transfer Switch Service No. Description No. Description 1 Busbar, Bonding Jumper 9 Plastic Barrier 2 Busbar, Neutral 10 Breaker Mounting Bracket 3 Busbar, Ground 11 Circuit Breaker 4 Cabinet 12 3/8-16 Hardware 5 M8 Bolts 13 M6 Hardware 6 Switch Mechanism 14 M8 Bolts 7 3/8-16 Hardware 15 Ring Terminal Detail (Shown from Bottom View) 8 #10-32 Hardware 16 M6 Hardware FIGURE 24.
5. Transfer Switch Service 5.4 8-2019 Limit Switch Replacement Procedure WARNING The transfer switch presents a shock hazard that can cause severe personal injury or death. Before beginning installation, remove all sources of AC power. If a generator provides emergency power, move the generator operation selector switch to Stop, disconnect AC line power, disconnect the battery charger from its AC power source, and disconnect the starting battery, negative (–) lead first. 1.
8-2019 5. Transfer Switch Service c. Restore AC power to the automatic transfer switch. d. Move the operation selector switch on the generator to the Remote (or Auto) position. No. Description 1 Mounting Hardware 2 Limit Switches FIGURE 25. A046S594 (Issue 19) No. 3 Description Transfer Switch RA112N3, RA212N3, RA112S3, AND RA212S3 TRANSFER SWITCH REMOVAL 51 Copyright © 2019 Cummins Inc.
5. Transfer Switch Service No. 1 8-2019 Description No. Limit Switches FIGURE 26. Copyright © 2019 Cummins Inc.
8-2019 5. Transfer Switch Service No. Description No. 1 Transmission Shaft 2 Switch Position Indicators Red ON or Green OFF FIGURE 27. A046S594 (Issue 19) 3 Description Transfer Switch Manual Operation Handle RA112N3, RA212N3, RA112S3, AND RA212S3 MANUAL OPERATION HANDLE 53 Copyright © 2019 Cummins Inc.
5. Transfer Switch Service No. 8-2019 Description No. 1 Transmission Shaft 2 Switch Position Indicators Red ON or Green OFF FIGURE 28. Copyright © 2019 Cummins Inc.
8-2019 5.5 5. Transfer Switch Service Control Relay (K1) Replacement Procedure WARNING The transfer switch presents a shock hazard that can cause severe personal injury or death. Before beginning installation, remove all sources of AC power. If a generator provides emergency power, move the generator operation selector switch to Stop, disconnect AC line power, disconnect the battery charger from its AC power source, and disconnect the starting battery (negative [-] lead first). 1.
5. Transfer Switch Service No. 8-2019 Description 1 Relay 2 Clip 3 FIGURE 29. 5.6 No. Description Base CONTROL RELAY INSTALLATION Circuit Breaker Replacement Procedures These procedures are only for RA Series service entrance transfer switches. WARNING The transfer switch presents a shock hazard that can cause severe personal injury or death. Before beginning installation, remove all sources of AC power.
8-2019 5. Transfer Switch Service WARNING Ignition of explosive battery gases can cause severe personal injury. Do not smoke or cause any spark, arc, or flame while servicing batteries. WARNING Accidental starting of the generator set can cause severe personal injury or death due to electrocution or contact with moving parts. Disconnect the starting battery cables, before performing service. Batteries emit hydrogen, a highly explosive gas.
5. Transfer Switch Service 8-2019 FIGURE 30. RA112N3, RA212N3, RA112S3, AND RA212S3 2. RA412S3 service entrance transfer switch models only: a. Remove all sources of power from the transfer switch in the following order. i. Move the operation selector switch on the generator set to Stop (Off). CAUTION Always disconnect a battery charger from its AC source before disconnecting the battery cables.
8-2019 5. Transfer Switch Service iv. Remove AC power to the automatic transfer switch. b. Remove the transfer switch cabinet door panel. c. Remove the following: i. The plastic barrier covering access to the mechanical lugs ii. The two M10X1.25 bolts and washers securing the mechanical lugs to the circuit breaker iii. The two 3/8-16 bolts and washers securing the busbars to the breaker iv. The four #10-32 bolts, washers, and nuts securing the breaker to the breaker mounting bracket v.
5. Transfer Switch Service 8-2019 FIGURE 31. 5.7 RA412S3 CIRCUIT BREAKER Utility Sense Relay (K2) Replacement Procedure WARNING The transfer switch presents a shock hazard that can cause severe personal injury or death. Before beginning installation, remove all sources of AC power.
8-2019 5. Transfer Switch Service WARNING Accidental starting of the generator set can cause severe personal injury or death due to electrocution or contact with moving parts. Disconnect the starting battery cables, before performing service. Batteries emit hydrogen, a highly explosive gas. Thoroughly ventilate the battery compartment before removing battery cables. Remove the negative (-) cable (s) first to reduce the risk of arcing. c. Disconnect the generator starting battery (negative [-] lead first).
5. Transfer Switch Service 8-2019 This page is intentionally blank. Copyright © 2019 Cummins Inc.
Appendix A. Parts Information Table of Contents Figure 32. RA112N3 and RA212N3 Non-Service Entrance Transfer Switch Model ............................... 64 Figure 33. RA412N3 Non-Service Entrance Transfer Switch Model ....................................................... 65 Figure 34. RA112S3 and RA212S3 Service Entrance Transfer Switch Model ........................................ 66 Figure 35. RA412S3 Service Entrance Transfer Switch Model ..............................................................
Appendix A. Parts Information 8-2019 This section includes information on replaceable parts used with RA transfer switches for both service entrance and non-service entrance models. FIGURE 32. RA112N3 AND RA212N3 NON-SERVICE ENTRANCE TRANSFER SWITCH MODEL Copyright © 2019 Cummins Inc.
8-2019 Appendix A. FIGURE 33. A046S594 (Issue 19) Parts Information RA412N3 NON-SERVICE ENTRANCE TRANSFER SWITCH MODEL 65 Copyright © 2019 Cummins Inc.
Appendix A. Parts Information FIGURE 34. 8-2019 RA112S3 AND RA212S3 SERVICE ENTRANCE TRANSFER SWITCH MODEL Copyright © 2019 Cummins Inc.
8-2019 Appendix A. FIGURE 35. A046S594 (Issue 19) Parts Information RA412S3 SERVICE ENTRANCE TRANSFER SWITCH MODEL 67 Copyright © 2019 Cummins Inc.
Appendix A. Parts Information FIGURE 36. 8-2019 RA112N3 AND RA212N3 NON-SERVICE ENTRANCE MODELS TABLE 13. RA SERIES RA112N3 AND RA212N3 NON-SERVICE ENTRANCE MODELS Ref No. Part No. Qty. - - 306-5191 1 100A 306-5192 1 200A 2 308-1235 2 Limit Switch 3 319-6882 1 Terminal Cover, Switch Mechanism 1 Copyright © 2019 Cummins Inc.
8-2019 Appendix A. Ref No. Part No. Qty.
Appendix A. Parts Information FIGURE 37. Copyright © 2019 Cummins Inc.
8-2019 Appendix A. Parts Information TABLE 15. RA412N3 NON-SERVICE ENTRANCE MODELS No. Part No. Qty.
Appendix A. Parts Information FIGURE 38. Copyright © 2019 Cummins Inc.
8-2019 Appendix A. Parts Information TABLE 17. RA112S3 AND RA212S3 SERVICE ENTRANCE MODELS Ref No. Part No. Qty.
Appendix A. Parts Information FIGURE 39. Copyright © 2019 Cummins Inc.
8-2019 Appendix A. Parts Information TABLE 19. RA412S3 SERVICE ENTRANCE MODELS Ref No. Part No. Qty.
Appendix A. Parts Information 8-2019 This page is intentionally blank. Copyright © 2019 Cummins Inc.
Appendix B. Wiring Diagrams Table of Contents Figure 40. RA112N3, RA212N3, RA112S3, and RA212S3 Transfer Switch Wiring Diagram (Sheet 1 of 2) .................................................................................................................................................................... 79 Figure 41. RA112N3, RA212N3, RA112S3, and RA212S3 Transfer Switch Wiring Diagram (Sheet 2 of 2) ..........................................................................................................
Appendix B. Wiring Diagrams 8-2019 The drawings included in this section are representative. For current complete information, refer to the drawing package that was shipped with the unit. Copyright © 2019 Cummins Inc.
8-2019 Appendix B. B.1 RA Series Transfer Switch Wiring Diagrams FIGURE 40. A046S594 (Issue 19) Wiring Diagrams RA112N3, RA212N3, RA112S3, AND RA212S3 TRANSFER SWITCH WIRING DIAGRAM (SHEET 1 OF 2) 79 Copyright © 2019 Cummins Inc.
Appendix B. Wiring Diagrams 8-2019 FIGURE 41. Copyright © 2019 Cummins Inc.
8-2019 Appendix B. FIGURE 42. A046S594 (Issue 19) Wiring Diagrams RA412N3 AND RA412S3 TRANSFER SWITCH WIRING DIAGRAM (SHEET 1 OF 2) 81 Copyright © 2019 Cummins Inc.
Appendix B. Wiring Diagrams 8-2019 FIGURE 43. Copyright © 2019 Cummins Inc.
8-2019 Appendix B. B.2 RA Series Transfer Switch Interconnections FIGURE 44. A046S594 (Issue 19) Wiring Diagrams RA112N3, RA212N3, RA112S3, AND RA212S3 TRANSFER SWITCH INTERCONNECTIONS (SHEET 1 OF 3) 83 Copyright © 2019 Cummins Inc.
Appendix B. Wiring Diagrams 8-2019 FIGURE 45. Copyright © 2019 Cummins Inc.
8-2019 Appendix B. FIGURE 46. A046S594 (Issue 19) Wiring Diagrams RA112N3, RA212N3, RA112S3, AND RA212S3 TRANSFER SWITCH INTERCONNECTIONS (SHEET 3 OF 3) 85 Copyright © 2019 Cummins Inc.
Appendix B. Wiring Diagrams 8-2019 FIGURE 47. Copyright © 2019 Cummins Inc.
8-2019 Appendix B. FIGURE 48. A046S594 (Issue 19) Wiring Diagrams RA412N3 AND RA412S3 TRANSFER SWITCH INTERCONNECTIONS (SHEET 2 OF 2) 87 Copyright © 2019 Cummins Inc.
Appendix B. Wiring Diagrams 8-2019 This page is intentionally blank. Copyright © 2019 Cummins Inc.
Appendix C. Outline Drawings Table of Contents Figure 49. RA112N3 Control Box Outline Drawing ................................................................................... 91 Figure 50. RA212N3 Control Box Outline Drawing ................................................................................... 92 Figure 51. RA112S3 and RA212S3 Control Box Outline Drawing ........................................................... 93 Figure 52. RA412N3 Control Box Outline Drawing ............................
Appendix C. Outline Drawings 8-2019 The drawings included in this section are representative. For current complete information, refer to the drawing package that was shipped with the unit. Copyright © 2019 Cummins Inc.
8-2019 Appendix C. C.1 RA112N3 Control Box Outline Drawing FIGURE 49. A046S594 (Issue 19) Outline Drawings RA112N3 CONTROL BOX OUTLINE DRAWING 91 Copyright © 2019 Cummins Inc.
Appendix C. Outline Drawings C.2 8-2019 RA212N3 Control Box Outline Drawing FIGURE 50. Copyright © 2019 Cummins Inc.
8-2019 Appendix C. C.3 RA112S3 and RA212S3 Control Box Outline Drawing FIGURE 51. A046S594 (Issue 19) Outline Drawings RA112S3 AND RA212S3 CONTROL BOX OUTLINE DRAWING 93 Copyright © 2019 Cummins Inc.
Appendix C. Outline Drawings C.4 8-2019 RA412N3 Control Box Outline Drawing FIGURE 52. Copyright © 2019 Cummins Inc.
8-2019 Appendix C. C.5 RA412S3 Control Box Outline Drawing FIGURE 53. A046S594 (Issue 19) Outline Drawings RA412S3 CONTROL BOX OUTLINE DRAWING 95 Copyright © 2019 Cummins Inc.
Appendix C. Outline Drawings 8-2019 This page is intentionally blank. Copyright © 2019 Cummins Inc.
power.cummins.com Copyright © 2019 Cummins Inc. All rights reserved. Cummins, the "C" logo, PowerCommand, AmpSentry, and InPower are trademarks of Cummins Inc. Other company, product, or service names may be trademarks or service marks of others. Specifications are subject to change without notice.
