Generac Power Systems GTS "W" Owner's Manual
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Generac Power Systems GTS "W" Owner's Manual

Generac Power Systems GTS "W" Owner's Manual

Automatic transfer switch 100 thru 400 amp, 600 volts
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POWER SYSTEMS, INC.
Owner's Manual
GTS "W" Type
Automatic
Transfer Switch
GENERAC
R R
100 thru 400 amp,
600 volts

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Summary of Contents for Generac Power Systems GTS "W"

  • Page 1 ® POWER SYSTEMS, INC. Owner’s Manual GTS “W” Type Automatic Transfer Switch GENERAC 100 thru 400 amp, 600 volts...
  • Page 2 Important Safety Instructions Read the following information carefully before attempting to install, operate or service this equipment. Also read the instructions and information on tags, decals, and labels that may be affixed to the transfer switch. Replace any decal or label that is no longer legible. DANGER! Connection of a generator to an electrical system normally supplied by an electric utility shall be by means of suitable transfer equipment so as to isolate the electric system from utility distribution system when the generator is operating (Article 701 Legally Required...

  • Page 3: Table Of Contents

    Table of Contents Safety Rules ........Inside Front Cover-1 Section 1 — General Information ........2 • Because jewelry conducts electricity, wearing it may cause dangerous electrical shock. Remove all Introduction ............2 jewelry (such as rings, watches, bracelets, etc.) Equipment Description ........2 Transfer Switch Data Plate ........2 before working on this equipment.

  • Page 4: Section 1 - General Information

    Section 1 — General Information Generac GTS “W” Type Transfer Switch INTRODUCTION When requesting information or ordering parts for this equipment, make sure to include all information from This manual has been prepared especially for the the DATA PLATE. purpose of familiarizing personnel with the design, application, installation, operation and servicing of Record your Model and Serial numbers in the space the applicable equipment.

  • Page 5: Section 2 - Installation

    Section 2 — Installation Generac GTS “W” Type Transfer Switch INTRODUCTION TO INSTALLATION Wiring diagrams and electrical schematics are provided in this manual. Power source and load connections are made This equipment has been wired and tested at the facto- at a transfer mechanism, inside the switch enclosure.

  • Page 6: Connecting Start Circuit Wires

    AC connection lows: (lower) panel of Generac power systems (engine-genera- tor set). See Figure 2.4. • LOAD leads: Connect to terminals T1, T2, T3, & T4*.

  • Page 7: Auxiliary Contacts

    Section 2 — Installation Generac GTS “W” Type Transfer Switch Figure 2.4 — Connection Diagram - 3-Phase With Neutral Shown (Typical) Recommended wire gauge sizes for this wiring depends AUXILIARY CONTACTS on the length of the wire, as recommended below: If desired, you have access to Auxiliary Contacts on the MAXIMUM WIRE LENGTH RECOMMENDED WIRE...

  • Page 8: Time Delay Neutral On-Off Switch

    Section 3 — Operation Generac GTS “W” Type Transfer Switch Contact operation is shown in the following chart: FUNCTIONAL TESTS AND Switch Position ADJUSTMENTS Utility Standby Following transfer switch installation and interconnec- Common to Normally Open Closed Open tion, inspect the entire installation carefully. A compe- Common to Normally Closed Open Closed...
  • Page 9 Section 3 — Operation Generac GTS “W” Type Transfer Switch 3.2.1 CLOSE TO NORMAL SOURCE SIDE 3.2.2 CLOSE TO STANDBY SOURCE SIDE Before proceeding, verify the position of the switch by Before proceeding, ensure that the previous 3.2.1, “Step observing window “A” in figure 3.1. If window “A” reads 2”...

  • Page 10: Voltage Checks

    Section 3 — Operation Generac GTS “W” Type Transfer Switch VOLTAGE CHECKS 8. With an accurate AC voltmeter, check the phase-to- phase (line-to-line) and phase-to-neutral (line-to- neutral) voltages present at transfer mechanism ter- DANGER minals N1, N2, N3 and neutral. SUPPLIED VOLT- AGES MUST BE FULLY COMPATIBLE WITH Disconnect all loads from the transfer switch TRANSFER SWITCH RATED VOLTAGE.

  • Page 11: Electrical Operation

    Section 3 — Operation Generac GTS “W” Type Transfer Switch ELECTRICAL OPERATION Figure 3.2 — The Transfer Mechanism Test transfer system electrical operation as follows: 1. On the Utility Voltage Sensor circuit board, check that the UTILITY ON lamp (LED) is ON. 2.

  • Page 12: Main Contacts At Neutral

    Section 3 — Operation Generac GTS “W” Type Transfer Switch MAIN CONTACTS AT NEUTRAL 3.10 MODE SWITCH LOAD terminals are disconnected from both power sup- This switch permits operator selection of AUTOMATIC, ply terminals. The word “OFF” will be displayed in both NORMAL TEST or FAST TEST mode as follows (Figure Windows “A”...

  • Page 13: Switch Position Led

    Section 3 — Operation Generac GTS “W” Type Transfer Switch 3.12 SWITCH POSITION LED 3.13.3 SEQUENCE 3 - ENGINE MINIMUM RUN AND WARMUP TIMERS 3.12.1 EMERGENCY • This timer establishes the minimum length of time This LED will go ON when main current-carrying con- for the generator to run before you can shut it down.

  • Page 14: Sequence Of Operation Settings

    Section 3 — Operation Generac GTS “W” Type Transfer Switch 3.13.7 SEQUENCE 7 - ENGINE COOL DOWN NOTE: TIMER Actual time between re-transfer back to UTILITY and engine shutdown is whichever is longer of the • After the switch re-transfers loads back to UTILITY, Engine Cool Down timer setting or any time remain- this timer starts.

  • Page 15: Transfer Switch Options

    Section 3 — Operation Generac GTS “W” Type Transfer Switch 3.15 TRANSFER SWITCH OPTIONS 3.15.2 SIGNAL BEFORE TRANSFER The transfer switch may be equipped with one or more The signal before transfer option includes a signal relay, of the following options: customer connection terminal strip and the associated wiring.
  • Page 16 Section 3 — Operation Generac GTS “W” Type Transfer Switch Figure 3.9 — Remote Auto Control 3.15.5 PREFERRED SOURCE SELECTOR SWITCH The Preferred Source Selector Switch option includes a door mounted rotary 2-position selector switch, cus- tomer connection terminal strip and associated wiring (Figure 3.9).

  • Page 17: Sensor And Timer Adjustments - Sensing Circuit Board

    Section 3 — Operation Generac GTS “W” Type Transfer Switch Figure 3.11 — Manual 3-Position Switch 3.16 SENSOR AND TIMER ADJUSTMENTS — SENSING CIRCUIT BOARD 3.16.1 VOLTAGE DROPOUT SENSOR This sensor (Figure 3.12) establishes the NORMAL power source voltage which generator startup and transfer to STANDBY (Emergency) power source occurs.

  • Page 18: Adjustments On Inphase Monitor Control Circuit Board

    Section 3 — Operation Generac GTS “W” Type Transfer Switch 3.17 ADJUSTMENTS ON INPHASE If any one of the preceding conditions are not met with- in 30 seconds, the system will automatically revert to MONITOR CONTROL CIRCUIT BOARD Time delay Neutral (if selected). If Time Delay Neutral is The Inphase Monitor Control board is operational only not selected, the switch will transfer immediately after when the generator set is running and producing elec-...
  • Page 19 Section 3 — Operation Generac GTS “W” Type Transfer Switch 3.17.4 ENGINE COOL DOWN TIMER 3.17.10 INPHASE TRANSFER SELECT SWITCH Provides a time delay between automatic re-transfer This switch allows the operator or installer to select back to the NORMAL source and engine shutdown. This either “Inphase Transfer”...

  • Page 20: Calibrating The Inphase Monitor Control Circuit Board

    Section 3 — Operation Generac GTS “W” Type Transfer Switch 3.18 CALIBRATING THE INPHASE NOTE: With the Calibration Mode Switch set to “STDBY” or MONITOR CONTROL CIRCUIT BOARD “UTIL ”, the four top LED’s should turn ON in The Inphase Monitor circuit board must be calibrated sequence.

  • Page 21: Exercise Timer Display

    Section 3 — Operation Generac GTS “W” Type Transfer Switch DIP Switch Settings - W-Type Transfer Switches SWITCH RATED 100/200; 110/220; SWITCH RATED 120/240; SWITCH RATED 277.480; TRANSFER SWITCH 115/200; 120/208; 220/380 VOLTS 231/400; 240/416 VOLTS 346/600 VOLTS 100 amps, 2-pole (64772) 100 amps, 3-pole (64773) 100 amps, 4-pole (64774) 150 amps, 2 pole (A8185)

  • Page 22: Exercise Times

    Section 3 — Operation Generac GTS “W” Type Transfer Switch 3.21 EXERCISE TIMES • In exercise time mode, the days will step through 7 states indicating Sunday to Saturday and will then Exercise times may be set individually on a day by day display state 8 - all days LEDs flashing on/off togeth- basis.

  • Page 23: Calibrate Utility Voltage Sensing Circuit Board

    Section 4 — Maintenance Generac GTS “W” Type Transfer Switch 3.24 CALIBRATE UTILITY VOLTAGE Figure 3.17 — Utility Voltage Sensing Circuit Board SENSING CIRCUIT BOARD The utility sensing interface reduces utility source volt- age ar a fixed ratio. Thus, if utility voltage varies from the nominal, sensing voltage to the circuit board also varies.

  • Page 24: Main Current Carrying Contacts

    Section 4 — Maintenance Generac GTS “W” Type Transfer Switch MAIN CURRENT CARRYING CONTACTS Use only specified greases to lubricate contactor At least once annually, have an Authorized Service parts. DO NOT USE ANY SUBSTITUTES. Technician check the main current carrying contacts in the transfer mechanism.

  • Page 25: Section 5 - Notes

    Section 5 — Notes Generac GTS “W” Type Transfer Switch Generac ® Power Systems, Inc. 23...
  • Page 26 Section 5 — Notes Generac GTS “W” Type Transfer Switch 24 Generac ® Power Systems, Inc.
  • Page 27 Section 5 — Notes Generac GTS “W” Type Transfer Switch Generac ® Power Systems, Inc. 25...

  • Page 28: Section 6 - Mounting Dimensions

    Section 6 — Mounting Dimensions Generac GTS “W” Type Transfer Switch 100 Amp NEMA 1 Units 24.8 10.15 Ø0.44 37.4 36.77 0.44 150-400 Amp NEMA 1 Units 12.17 30.79 49.41 48.78 0.44 26 Generac ® Power Systems, Inc.
  • Page 29 Section 6 — Mounting Dimensions Generac GTS “W” Type Transfer Switch 100 Amp 3R, 4, and 4X Units (Typical) Ø 0.44 TYP. 2 TYP. 0.87 0.55 0.44 TYP. 22.24 TYP. 150-400 Amp 3R, 4 and 4X Units (Typical) Ø 0.44 TYP. 2 TYP.
  • Page 30 Section 6 — Mounting Dimensions Generac GTS “W” Type Transfer Switch 100 Amp NEMA 12 Units With Instrument Package 24.02 10.12 Ø0.44 37.4 35.98 0.44 150-400 Amp NEMA 12 Units With Instrument Package 12.13 49.41 47.99 0.44 28 Generac ® Power Systems, Inc.

  • Page 31: Section 7 - Wiring Diagrams & Electrical Schematics

    Section 7 — Wiring Diagrams & Electrical Schematics Wiring Diagram - 208/240V — Drawing No. 0D8112 Generac ® Power Systems, Inc. 29...
  • Page 32 Section 7 — Wiring Diagrams & Electrical Schematics Electrical Schematic - 208/240V — Drawing No. 0D8116-A 30 Generac ® Power Systems, Inc.
  • Page 33 Section 7 — Wiring Diagrams & Electrical Schematics Wiring Diagram - 416V 3-Pole — Drawing No. 0D8114 Generac ® Power Systems, Inc. 31...
  • Page 34 Section 7 — Wiring Diagrams & Electrical Schematics Electrical Schematic - 416V 3-Pole — Drawing No. 0D8118-A 32 Generac ® Power Systems, Inc.
  • Page 35 Section 7 — Wiring Diagrams & Electrical Schematics Wiring Diagram - 416V 4-Pole — Drawing No. 0D8115 Generac ® Power Systems, Inc. 33...
  • Page 36 Section 7 — Wiring Diagrams & Electrical Schematics Electrical Schematic - 416V 4-Pole — Drawing No. 0D8119-A 34 Generac ® Power Systems, Inc.
  • Page 37 Section 7 — Wiring Diagrams & Electrical Schematics Wiring Diagram - 480/600V — Drawing No. 0D8113 Generac ® Power Systems, Inc. 35...
  • Page 38 Section 7 — Wiring Diagrams & Electrical Schematics Electrical Schematic - 480/600V — Drawing No. 0D8117-A 36 Generac ® Power Systems, Inc.
  • Page 39 Section 7 — Wiring Diagrams & Electrical Schematics Wiring Diagram — Drawing No. 0D8035-A Generac ® Power Systems, Inc. 37...
  • Page 40 Section 7 — Wiring Diagrams & Electrical Schematics Electrical Schematic — Drawing No. 0D4520 38 Generac ® Power Systems, Inc.
  • Page 41 Section 7 — Wiring Diagrams & Electrical Schematics Electrical Schematic/Interface — Drawing No. 70067617-B Generac ® Power Systems, Inc. 39...

  • Page 42: Section 8 - Exploded Views & Parts Lists

    Section 8 — Exploded Views & Parts Lists Assembly — Drawing No. 0D7651$-C - Part 1 40 Generac ® Power Systems, Inc.
  • Page 43 Section 8 — Exploded Views & Parts Lists Assembly — Drawing No. 0D7651$-C - Part 1 ITEM PART NO. QTY. DESCRIPTION ITEM PART NO. QTY. DESCRIPTION 0D7300 XFER SW-W 100A600V2P 0C3471 ENCL-NEM3R 1-150A 0D7301 XFER SW-W 100A600V3P 0C3472A ENC W/IN-NEM4 1-150A 0D7302 XFER SW-W 100A600V4P 0C3472...
  • Page 44 Section 8 — Exploded Views & Parts Lists Assembly — Drawing No. 0D7651$-C - Part 2 42 Generac ® Power Systems, Inc.
  • Page 45 Section 8 — Exploded Views & Parts Lists Assembly — Drawing No. 0D7651$-C - Part 2 ITEM PART NO. QTY. DESCRIPTION ITEM PART NO. QTY. DESCRIPTION 0C8881 XFER SW-W 150A600V2P 0C3472C ENL W/IN-NEM4X 1-150 0C8882 XFER SW-W 150A600V3P 0C3472B ENCL-NEM4X 1-150A 0C8883 XFER SW-W 150A600V4P 063578...
  • Page 46 Section 8 — Exploded Views & Parts Lists Assembly — Drawing No. 0D7651$-C - Part 3 44 Generac ® Power Systems, Inc.
  • Page 47 Section 8 — Exploded Views & Parts Lists Assembly — Drawing No. 0D7651$-C - Part 3 ITEM PART NO. QTY. DESCRIPTION ITEM PART NO. QTY. DESCRIPTION 0C8881 XFER SW-W 150A600V2P 063578 PLATE DATA - GTS 0C8882 XFER SW-W 150A600V3P 064153A WIRE-XFMER JUMPER (NOT SHOWN) 0C8883 XFER SW-W 150A600V4P...

  • Page 48: Section 9 - Warranty

    NOTE: ALL UNITS MUST HAVE A START-UP INSPECTION PERFORMED BY AN AUTHORIZED GENERAC DEALER. For a period of 2 (two) years from the date of sale/start date, Generac Power Systems, Inc. will, at its option, repair or replace any part(s) which, upon examination, inspection, and testing by Generac Power Systems or a Generac Power Systems Authorized Warranty Service Facility, is found to be defective under normal use and service, in accordance with the warranty schedule set forth below.
  • Page 51 0D7300 XFER SW-W 100A600V2P 075355 DECAL-SGNL BFR XFER 0D7301 XFER SW-W 100A600V3P 0C8308 DECAL TERMINAL SHOCK HAZARD 0D7302 XFER SW-W 100A600V4P 091466 DECAL 2 WR TERM STRP 063617 RELAY PNL 12VDC DPDT 10A@240VA 098876 DECAL DUAL START 091472A COVER WIRE DUCT 1 IN 074571 DECAL-REM.
  • Page 53 0C8881 XFER SW-W 150A600V2P 074571 DECAL-REM. AUTO CNTR 0C8882 XFER SW-W 150A600V3P 067210A DECAL GROUND LUG 0C8883 XFER SW-W 150A600V4P 064114 DECAL-CUST CONN CTS 0C8884 XFER SW-W 200A600V2P 0536210193 GND WIRE-ENCLSR DOOR 0C8885 XFER SW-W 200A600V3P 0D4545 DECAL MANUAL OPERATION 0C8886 XFER SW-W 200A600V4P 077228...
  • Page 55 0C8881 XFER SW-W 150A600V2P 0C3478C ENLW/IN-NEM4X 15-400 0C8882 XFER SW-W 150A600V3P 0C3478B ENCL-NEM4X 15-400A 0C8883 XFER SW-W 150A600V4P 063578 PLATE DATA - OEM 0C8884 XFER SW-W 200A600V2P 0E5495 PLATE DATA – PRIVATE LABEL 0C8885 XFER SW-W 200A600V3P 064153A WIRE-XFMER JUMPER (NOT SHOWN) 0C8886 XFER SW-W 200A600V4P 083736...
  • Page 56 0F7806 NUT HEX FL WHIZ M4-0.7 074906 SCREW HHTT M6-1.0 X 20 BP 0C4896 SCREW FHM M8-1.25 X 20MM CR 067989 NUT LOCK FL M8-1.25 YEL CHR 087680 NUT WING M6-1.0 0C8275 SCREW PPHM DSEMS M4-7 X 10 ZNC 026902 SCREW HHTT #8-32 X 1/4 CZ 0A8261 SCREW HHC 1/4-28 X 5/8 .625TH...
  • Page 60 ATS-Y ATS-X ATS-Z WIRE INSERTION END LEGEND TRANSFER SWITCH CONTACTOR RESISTOR, TIME DELAY NEUTRAL (TDN) RELAY, TRANSFER UTILITY SENSING INTERFACE...
  • Page 61 ATS-Y COM M ATS-X COM M ATS-Z L-J1 WIRE IN LEGEND TRANSFER SWITCH CONTACTOR L-J1 CONNECTOR, INPHASE MONITOR PCB CONNECTOR, UTILITY VOL. SENSING PCB RESISTOR, TIME DELAY NEUTRAL (TDN) UTILITY SENSING INTERFACE 2 - WIRE START...
  • Page 62 ATS-Y ATS-X ATS-Z L-J1 WIRE INSERTION EN H3 H2 H1 LEGEND TRANSFER SWITCH CONTACTOR CONNECTOR, 7 DAY EXERCISER PCB GREEN LIGHT, SWITCH POSITION UTILITY YELLOW LIGHT, STANDY OPERATING L-J1 CONNECTOR, INPHASE MONITOR PCB RESISTOR, TIME DELAY NEUTRAL (TDN) CONNECTOR, UTILITY VOL, SENSING PCB SWITCH, MAINTENANCE DISCONNECT SWITCH, SYSTEM TEST SWITCH, TDN ON/OFF...
  • Page 63 ATS-Y COM M ATS-X COM M ATS-Z WIRE INSERTION EN H3 H2 H1 LEGEND SWITCH, AUXILIARY CONNECTOR, 7 DAY EXERCISER PCB RED LIGHT, SWITCH POSITION EMERGENCY YELLOW LIGHT, STANDY OPERATING L-J1 CONNECTOR, INPHASE MONITOR PCB CONNECTOR, UTILITY VOL. SENSING PCB RESISTOR, TIME DELAY NEUTRAL (TDN) CONNECTOR, UTILITY VOL, SENSING PCB RELAY, TRANSFER...
  • Page 64 CONTACTS UTILITY NOTE: SEE DWG. 70067617 FOR 2 - 7 INTERFACE INTERNAL CONNECTIONS 2 - 11 WIRE 59, N3, 226, AND CT3 USED ON 3-PHASE UNITS ONLY. 225 226 ALL RELAY CONTACTS SHOWN WITH ATS IN UTILITY POSITION. 12 - 7 12 - 11 WIRE T3 BECOMES 00 ON 120/240V 1-PHASE UNITS ONLY 15 - 14...
  • Page 65 UTILITY SEE DWG. 70067617 FOR 2 - 7 SENSING INTERFACE INTERFACE INTERNAL 2 - 11 N3 224 12 - 7 ALL RELAY CONTACTS SHOWN 480V 240V 12 - 11 WITH ATS IN UTILITY POSITION 15 - 14 600V 18-25V 15 - 18 UTILITY 19 - 14 VOLTAGE...
  • Page 66 CONTACTS UTILITY SEE DWG. 70067617 FOR 2 - 7 INTERFACE INTERNAL CONNECTIONS 2 - 11 12 - 7 12 - 11 15 - 18 19 - 16 UTILITY 19 - 14 X INDICATES CLOSED VOLTAGE SENSING 2 WIRE START 7 DAY EXERCISE 416V TIMER...
  • Page 67 CONTACTS SEE DWG. 70067617 FOR 2 - 7 INTERFACE INTERNAL CONNECTIONS 2 - 11 NOTE: 12 - 7 ALL RELAY CONTACTS SHOWN WITH 12 - 11 ATS IN UTILITY POSITION 15 - 18 19 - 16 UTILITY 19 - 14 X INDICATES CLOSED 18-25V VOLTAGE...

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