Delta M42U User Manual

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Figure 7-1: Thermal Derating curve of M42U

30

25

35

40 45 50

55

60

50 %

55 %

60 %

65 %

70 %

75 %

80 %

85 %

90 %

95 %

100 %

105 %

110 %

115 %

P/P*

P*=42kW

545V

710V

830V

Temperature Derating of M42U

97

Technical Data

Table of Contents

Default Chapter3
- Table of Contents3
1 Safety10
- Information of the Inverter10
- Legal Provisions10
- Target Group10
- General Safety11
- Condition of Use11
- Symbols12
2 Introduction14
- Valid Model14
- Product Overview15
- Figure 2-2: Overview16
- Figure 2-3: Rating Labels of M42/36/28U17
- Table 2-2: Rating Label Explanation of M42/36/28U18
- Figure 2-4: External View and Wiring Box Layout for 120 Models19
- Figure 2-5: External View and Wiring Box Layout for 121 Models20
- Figure 2-6: External View and Wiring Box Layout for 122 Models21
- Figure 2-7: Wiring Box Layouts22
3 Installation23
- Mechanical Installation23
4 Commissioning51
- Display Operation Introduction51
- Figure 4-1: Front Panel Display51
- First Startup53
- Home Page54
- Main Menu54
- Power Meter55
- String Monitoring (120&122 Models)55
- Energy Log56
  - Event Log56
  - Inverter Information57
  - General Settings57
  - Install Settings58
    - Inverter ID59
  - Insulation59
  - Grid Code59
  - Figure 4-10: Inverter ID Screen Display59
  - Grid Settings60
  - Dry Contact Set-Up61
  - Potential Induced Degradation62
  - Residual Current Monitoring Unit (RCMU)62
  - Emergency Power-Off Enable62
  - AC Connection63
  - Anti-Islanding63
  - DC Arc Fault Circuit Interrupter (AFCI)63
  - Figure 4-17: AC Connection63
- Grid Code Confirm64
- Active / Reactive Power65
- Power Limit65
- Power Vs. Frequency65
- P(V)66
- Constant Cosphi67
- Cosphi (P)67
- Figure 4-26: Constant Cosphi Screens67
- Constant Q68
- Q(V)68
- FRT (Fault Ride Through)69
- Q(V)69
5 Maintenance70
- Removing and Replacing the Wiring Box (WB) Cover70
- Figure 5-1: Removing and Reinstalling the WB Cover70
- Removing the WB Cover71
- Replacing the WB Cover71
- Replacement of Surge Protection Devices (SPD)72
- Figure 5-4: Display Indicating AC and DC SPD Failure73
- Figure 5-5: Location of SPD Modules Inside Various WB Versions74
- Figure 5-6: Remove Screws as Indicated Unplug Connectors75
- Replace Internal String Fuse76
- Table 5-2: Combiner Fuse Specification76
- Figure 5-7: Fuse Holder Locations for 120/122 Models77
- Figure 5-9: String Monitor78
- Smart Fans Replacement and Filter Cleaning79
- Figure 5-10: Smart Fans Location on Power Module Chassis79
- Figure 5-11: Power Module Fan Tray80
- Power Module (PM) Fan Tray81
- PM Fan Tray Removal Procedure81
- Figure 5-12: Disassembling Fan Tray from PM Chassis (Showing One Side Only)82
- Procedures to Remove PM Air Inlet Filter83
- De-Commissioning84
6 Error Message and Trouble Shooting86
- Error Codes86
- Table 6-1A: Error Codes and Messages86
- Warning Codes87
- Fault Codes88
- Calling for Help92
- Service Call Checklist92
7 Technical Data93
- Technical of M42U Series93
- Technical of M36U Series94
- Technical of M28U Series95
- Communications96
- Certifications96
- Smart Inverter Functionality96
- General Data96
- Figure 7-1: Thermal Derating Curve of M42U97
- Figure 7-2: Thermal Derating Curve of M36U98
- Figure 7-3: Thermal Derating Curve of M28U99
Appendix A-1: Low and High Voltage Ride-Through Set-Points and Timing Per Table SA9.1100
APPENDIX: Grid Support Utility Interactive Inverters100
- Appendix A: CA Rule 21100
Appendix A-3: CA R21 Settings – Normal Ramp Rate (RR) & Soft-Start Ramp Rate (SS)101
Appendix A-5: CA R21 Settings - Specified Power Factor102
Appendix A-4: CA R21 Settings - Soft-Start Ramp Rate Test102
Appendix A-2: Low and High Frequency Ride-Through Set-Points and Timing Per Table SA10.1 100102
Appendix A-6: CA R21 Settings – Volt/Var Mode (Q(V))102
Appendix A-7: CA R21 Settings - Frequency-Watt (FW)103
Appendix A-8: CA R21 Settings – Volt-Watt (VW)103
Appendix B-1: Full Frequency Ride-Through Settings for O'ahu, Hawai'I Island, and Maui (HECO A)104
- Figure B-3: Details of HECO a & B: L/H VRT Via LCD Settings Menu106
- Appendix B: HECO104
Appendix B-2:Full Frequency Ride-Through Settings for Moloka'I and Lana'I (HECO B) 104107
Appendix B-3:Full Voltage Ride-Through Settings for O'ahu, Hawai'I Island, Maui, Moloka'I, and Lana'i104107
Appendix C-1: Assembly Note for All Model107
- Appendix C: Assembly Note107
Appendix C-2:Assembly Note for 120 Model109
Appendix C-3: Assembly Note for 121 Model109
Appendix C-4: Assembly Note for 122 Model110

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Delta M42U Specifications

General

Brand	Delta
Model	M42U
Category	Inverter
Language	English

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