Delta M250HV Specification sheet

M250HV
Operation and Installation Manual
Grid-tie Transformerless Solar Inverter
The power behind competitiveness
www.deltaww.com

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Contents
1 Safety
1.1 Information of the Inverter
1.1.1 Legal Provisions
1.1.2 Target Group
1.2 General Safety
1.2.1 Condition of Use
1.2.2 Symbols
2 Introduction
2.1 Valid Model
2.2 Product Overview
3 Installation
3.1 Unboxing & Review
3.2 Transport the inverter
3.3 Mechanical Installation
3.3.1 Vertical wall mount
3.3.2 Ground Mount (Option)
3.4 Door
3.5 Electrical Installation for AC Wiring
3.5.1 AC Grid Types and Connections
3.5.2 Required Protective Devices
3.5.3 AC Wiring Preparation
3.5.4 AC Side –Prewire Set-Up
3.5.5 AC Wiring
3.6 Electrical Installation for DC Wiring
3.6.1 DC Wiring Installation
3.6.2 Equipment Grounding
3.7 Antenna
3.8 Communication Module Connections
3.8.1 RS-485 Connection
3.8.2 EPO Function & Digital Input
3.8.3 Dry Contact Connection
3.9 On-Site Insulation Test
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4 Commissioning
4.1 Display Operation Introduction
4.2 Auto ID Commission Tool
4.2.1 Auto ID Setting
4.2.2 Set ID
4.2.3 Set Country
4.2.4 Synchronize time
4.3 Delta Function Setting
5 Maintenance
5.1 Open and Close the Door
5.1.1 Open Door
5.1.2 Close Door
5.2 Replacement of Surge Protection Devices (SPD)
5.3 External String Fuse For M250HV
5.4 Smart Fans Replacement and Filter Cleaning
5.4.1 Location of failure fan
5.4.2 Power Module (PM) Fan Tray
5.4.3 Internal Fan 1
5.4.4 Internal Fan 2
5.4.5 Internal Fan 3
5.5 De-Commissioning
6 Error Message and Trouble Shooting
6.1 Error Codes (Field Fault)
6.2 Fault Codes (Inverter Fault)
6.3 Warning Codes (Field Warning)
6.4 Warning Codes (Inverter Warning)
7 Technical Information
Appendix: Assembly Note
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Figure 2-1: Components
Figure 2-2: Overview
Figure 2-3: Rating label
Figure 2-4: External/ internal view
Figure 2-5: Layout
Figure 3-1: The step to unpacking the inverter
Figure 3-2: Hand hold position for lifting
Figure 3-3: Installation for handle - stand up the inverter
Figure 3-4: Installation for handle - lift the inverter
Figure 3-5: Attaching the Hoisting hooks
Figure 3-6: Inverter dimensions
Figure 3-7: Mounting bracket dimensions
Figure 3-8: Required position of at least 10 screws for mounting bracket
Figure 3-9: Reinforce bracket assembling
Figure 3-10: Permitted mounting positions
Figure 3-11: Prohibited mounting positions
Figure 3-12: Required mounting clearances
Figure 3-13: Separation distance of plural inverters
Figure 3-14: Lock the grounded brackets to foots
Figure 3-15: To secure inverter grounded brackets to ground-mounting base
Figure 3-16: First installation of M250HV just open the AC side (left) door
Figure 3-17: Size of AC conductors
Figure 3-18: Dimension of lug
Figure 3-19: AC Gland with multiple inlet (For multiple core cable)
Figure 3-20: AC Gland with multiple inlet (For single core cable)
Figure 3-21: Remove gland plate of M250HV
Figure 3-22: Location for AC terminal (For multiple core cable)
Figure 3-23: Location for AC terminal (For single core cable)
Figure 3-24 : AC gland assembling
Figure 3-25: DC Wiring illustration
Figure 3-26: Location of H4 connectors to connect array wiring (DC)
Figure 3-27: Installation methods for protective frame
Figure 3-28: Mount the equipment grounding
Figure 3-29: Installation of antenna
Figure 3-30: Attentions of installing antenna
Figure 3-31: Attentions of installing antenna bracket
Figure 3-32: Communication Module Layout
Figure 3-33: COMM. gland with multiple inlet
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Figure 3-34: Location and access to Communication Module
Figure 3-35: Remove communication connector from M250HV
Figure 3-36: Use flat screwdriver to configure the cable
Figure 3-37: Multiinverter connection illustration
Figure 3-38: EPO function terminal block
Figure 3-39: Dry Contact connection
Figure 3-40: Precautions for on-site insulation test
Figure 4-1: Front Panel Display
Figure 4-2: Steps of auto ID setting by tool
Figure 4-3: False of auto ID setting by tool
Figure 4-4: Steps of set ID
Figure 4-5: False of set ID
Figure 4-6: Steps of set country
Figure 4-7: False of set country
Figure 4-8: Steps of synchronize time
Figure 4-9: False of synchronize time
Figure 5-1: Opening and closing the door
Figure 5-2: AC and DC SPD modules
Figure 5-3: Display Indicating AC and DC SPD failure
Figure 5-4: SPD location
Figure 5-5: Remove wirings as connectors of AC SPD
Figure 5-6: Remove wirings as connectors of DC SPD
Figure 5-7: External String Fuse
Figure 5-8: The corresponding fan location to the fan fail code on DSS
Figure 5-9: Disassembling fan tray from PM chassis
Figure 5-10: Location of internal fan 1
Figure 5-11: Lift the entire fan assembly and disconnect the connector
Figure 5-12: Remove the fan cabinet
Figure 5-13: Location of internal fan 2
Figure 5-14: Lift the entire fan assembly
Figure 5-15: Remove the fan cabinet
Figure 5-16: Location of internal fan 3
Figure 5-17: Lift the entire fan assembly
Figure 5-18: Remove the fan cabinet
Figure 7-1: Input Voltage Derating Curve
Figure 7-2: Power Derating Curve with Ambient Temprature (PF=1)
Figure 7-3: Power Derating Curve with Input Voltage (PF=1)
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Table
Table 2-1: Packing list
Table 2-2: Rating label explanation
Table 2-3: Layout description
Table 3-1: Cable size comparison table (For multiple core cable)
Table 3-2: Cable size comparison table (For single core cable)
Table 3-3: H4 series connector
Table 3-4: RS-485 Terminal block wiring
Table 3-5: Bus Termination switch settings
Table 3-6: Definition of digital input & EPO function
Table 4-1: LED indicator
Table 4-2: LED COMM. indicator
Table 6-1A: Error Codes (Field Fault) & Messages
Table 6-1B: Error Codes (Field Fault) & Messages
Table 6-2A: Fault Codes (inverter fault) & Messages
Table 6-2B: Fault Codes (inverter fault) & Messages
Table 6-2C: Fault Codes (inverter fault) & Messages
Table 6-2D: Fault Codes (inverter fault) & Messages
Table 6-3A: Warning Codes (Field warning) & Messages
Table 7-1A: Specifications
Table 7-1B: Specifications
Appendix-1: Assembly Note-1
Appendix-2: Assembly Note-2
Appendix-3: Assembly Note-3
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7

Copyright – DELTA ELECTRONICS, INC. - All rights reserved.
This manual accompanies our product for use by the end users. The technical
instructions and illustrations contained in this manual are to be treated as
confidential and no part may be reproduced without the prior written permission
of DELTA ELECTRONICS, INC. Service engineers and end users may not
divulge the information contained herein or use this manual for purpose other
than those strictly connected with correct use of the product. All information
and specifications are subject to change without notice.
DELTA ELECTRONICS, INC. shall have no obligation to either personal injury
and property damage claims hereinafter with respect to any actions -- (a) the
product has been installed and/or repaired improperly; (b) the product has been
misused without following the instructions on this user manual; (c) the product
has failed due to incorrect unpacking.
1 Safety
1.1 Information of the Inverter
1.1.1 Legal Provisions
This - manual – is prepared for use by a well-trained technician for installing,
commissioning, operation, and maintenance. The technician must have the
following basic and advanced skills:
• Knowledge of the fundamentals of electricity, wiring, electrical components and
electrical schematic symbols.
• Knowledge of how a solar inverter works and is operated.
•
Training in the installation and commissioning of electrical devices and installations.
• Training in how to deal with the dangers and risks associated with installing
and using electrical devices and installations.
• Compliance with this manual and all safety information.
1.1.2 Target Group
Safety
8

1.2 General Safety
- External insulation transformer shall be installed at grid side which is following
to isolating between AC and PV array.
- The design of this inverter is transformerless. There is no isolation transformer
between the AC and DC sides, i.e., the product does not require galvanic isolation.
In order to function properly, any PV array connected must have its PV circuits
isolated from ground, i.e., do not bond either side of the array to ground!
If a grounded PV array is connected to the inverter, the error message INSULATION
(E34) will appear on the display.
- It is prohibited to reference the L1, L2, L3 terminal to ground; to do so will damage
the inverter and void the producr warranty.
ATTENTION : NO GALVANIC ISOLATION
- Please read these instructions carefully and save them for later use.
IMPORTANT SAFETY INSTRUCTIONS : SAVE THESE INSTRUCTIONS !
To prevent personal injury and/or property damage, and also to ensure long
term operation of the solar inverter, it is imperative this section be read carefully
and all the safety instructions understood before using this inverter.
This user manual provides important instructions for Delta grid-tie transformerless
solar inverter. The product is designed, tested, verified, and certified according
to international safety requirements, certifications, and standards but precautions
must be observed when installing and operating the product.
This product is suitable for both indoor and outdoor use.
- M250HV is a transformerless solar inverter with 12 MPP tracking inputs, which
converts the variable direct current generated by the solar array into a utility
frequency grid-compliant balanced three-phase AC current and feeds it into the
utility grid.
- The Photovoltaic modules used must be compatible with the inverter. PV
modules with a high parasitic capacitance to ground may only be utilized if the
capacitive coupling does not exceed 35μF.
- The inverter must only be operated in countries for which it is approved by
DELTA and the grid operator.
1.2.1 Condition of Use
9
Safety

This section describes the definition of the symbols in this manual.
In order to prevent both personal injury and property damage, and to ensure
long-term operation of the product, please read this section carefully and follow
all the safety instructions while you use the product.
1.2.2 Symbols
DANGER!
- This warning indicates an immediate hazard which will lead to death or
serious injury.
- This warning indicates a hazardous condition which may lead to minor injury.
CAUTION !
WARNING !
- This warning indicates a hazardous condition which may lead to death or
serious injury.
- This warning indicates a condition of potential damage to property and/or the
environment.
ATTENTION
10
Safety

- An exclamation mark enclosed in a double circle indicates additional important
information is contained in the following section and the user should follow the
instructions to prevent any hazards.
INFORMATION
DANGER : ELECTRICAL HAZARD!!
- This warning indicates an immediate electrical hazard that unheeded can lead
to death or serious injury.
- This warning indicates a potential burn hazard.
- Do not touch the product surface when operating.
- Do not perform any task until the product cools down sufficiently.
CAUTION : HOT SURFACES, DO NOT TOUCH!
- This icon indicates that a prescribed time delay must elapse before engaging in an
indicated action.
- Patientez le délai requis avant d’entreprendre l’action indiquée.
- This symbol indicates the location of an equipment grounding conductor (EGC)
terminal.
11
Safety

M250HV transformerless 3Ø PV inverters are designed to enable the highest
levels of efficiency and provide longest operating life by use of state-of-the-art
high frequency and low EMI switchmode technology. It is suitable for outdoor use.
The user manual is valid for the following device types:
This user manual must be followed during installation, operation, and maintenance.
DELTA reserves the right to make modifications to the content and technical
data in this user manual without prior notice.
• M250HV
2 Introduction
2.1 Valid Model
- This product utilizes a transformerless design, and is not provisioned with an
isolation transformer, and therefore has no galvanic isolation between the DC
and AC sides.
PV array circuits connected must be floating with respect to ground, i.e., must
not be referenced (bonded) to ground.
If grounded PV arrays are connected to the inverter, the inverter will not connect
to the grid and the error message INSULATION (E34) will appear.
- It is prohibited to connect terminals L1, L2, L3 to ground.
Introduction
12
DANGER!
- It is forbidden to open both doors at the same time.

2.2 Product Overview
Table 2-1: Packing list
Figure 2-1: Components
M250HV
Object Qty Description
1 Delta Solar Inverter 1 pc
1 pc
Solar inverter
7 H4 Wrench 2 pcs To disconnect H4 Plus connector
8
Antenna Bracket 1 pc For fixing antenna
9
10
11 M4 Screw 3 pcs For assembling antenna bracket
5
Protective Frame 12 pcs Protect DC connectors
6 H4 Plus Connector 30 pairs DC string inputs
2
1 pc
User Manual
Important instructions for solar inverter.
Safety instructions should be followed
during installation and maintenance.
Mounting Bracket Wall mounting bracket
(Material: Aluminum/Thickness: 3mm)
4
SUB_1G Antenna 1 pc Antenna for SUB_1G
Wall mount bracket assembly
For assembling reinforce bracket
2 pcs
2 pcs
Reinforce Bracket
M12 Screw
3
①
⑥
⑤
⑩
③② ④
⑦ ⑪⑧ ⑨
13
Introduction

Figure 2-2: Overview
SUB_1G Antenna
External
Fans
External
Grounding
AC Output
Antenna
Bracket
COMM. Gland
DC Switches
DC Switch
DC Input (H4)
x 30 strings
LED
External
Grounding
14
Introduction

Figure 2-3 below, shows the certification and rating label.
Table 2-2 defines the symbol markings on this label.
Figure 2-3: Rating label
Symbol Definition
Danger to life through electric shock
Potentially fatal voltage is applied to the inverter during operation.
This voltage persists even 150 seconds after disconnection of the power supply.
Never open the inverter. The inverter contains no components that must be maintained or
repaired by the operatoror installer. Opening the housing will void the warranty.
Before working with the inverter,
you must read the supplied manual
and follow the instructions contained
therein.
This inverter is not separated from
the grid with a transformer.
The housing of the inverter must
be grounded if this is required
by local regulations.
WEEE marking
The inverter must not be disposed
of as standard household waste,
but in accordance with the applicable
electronic waste disposal regulations
of your country or region.
150 seconds
Table 2-2: Rating label explanation
In the following pages, Figures 2-4 illustrate the general layout of the chassis
and wiring area. Figure 2-5 and Table 2-3, provides a detailed description
of each
wiring area option.
The wiring area includes terminals for connection of the output (AC) wiring,
AC surge protection devices (SPD).
DC Input / 直流輸入
Max. Input Voltage / 最大輸入電壓
MPP Voltage Range / MPP電壓範圍
Max. Input Current / 最大輸入電流
Max. Allowable Array Isc / 允許最大短路電流
1500 Vd.c.
820 ~ 1350 Vd.c.
312 Ad.c.
40A per MPPT
AC Output / 交流輸出
Nominal Output Voltage / 額定工作電壓
Nominal Output Frequency / 額定工作頻率
Connection Type / 連接形式
Max. Continuous Output Current / 最大輸出電流
Rated Continuous Output Power / 額定輸出功率
Max. Apparent Output Power / 最大視在功率
Power Factor / 功率因數
800 Va.c.
50 / 60 Hz
3Ø3W, PE
180.5 Aa.c.
250000 W
250000 VA
0.8 lead ~ 0.8 lag
Protection Class / 保護等級
Over Voltage Category / 過電壓類別
Ingress Protection / 防護等級
Operating Temperature Range / 操作溫度範圍
Non-isolated inverter
I
III (AC), II (DC)
IP66
-30 ~ +60℃
非隔離型變流器
Made in China
Authorized representative
Delta Electronics (Netherlands) B.V.
Zandsteen 15, 2132 MZ Hoofddorp,
The Netherlands
Manufacturing location:
No. 1688 Jiangxing East Road,
Wujiang Economic Development Zone
Suzhou City, 215200 Jiangsu Province,P.R. China
IEC 61439-2
150 sec.
M250HV
Solar Inverter / 太陽能變流器
P/N: RPI254M112000
Model / 型號
15
Introduction

Figure 2-4: External/ internal view
16
Introduction

ComponentNO. NO.
AC terminal
Component NO. Component
1 2 3
Internal fan 14
7
Internal fan 2
Internal fan 3
AC SPD
DC SPD 5
Communication module8
6
N3U_SB1
Table 2-3: Layout description
Figure 2-5: Layout
②④③ ⑦
⑤
⑥
①
⑧
17
Introduction

The chapter contains instructions for
(1) Mechanical installation
(2) Electrical Installation
(3) Communication setup
Figure 3-5 shows the hoisting hook instruction.
Figure 3-6 provides the mechanical dimensions of the inverter.
3 Installation
- In some locations, mounting the inverter in direct sunlight may cause the inverter
to enter a thermal derating mode. To eliminate this concern, a shade structure
over the inverter chassis may be necessary.
CAUTION !
WARNING !
- Do not install the unit near or on flammable surfaces.
- Inverter must be mounted securely to a solid / smooth surface.
18
Installation

Unpacking the case, please follow the order of Figure 3-1.
It could be transported by 2 people (Figure 3-4).
3.1 Unboxing & Review
Figure 3-1: The step to unpacking the inverter
- Use the handle (item 3, Figure 2-1) to stand up the inverter as Figure 3-3, 3-4.
- Required at least 2 people to lift the inverter.
- For ground mount installation, it is recommended to install the grounded brackets
first at this step. For detailed installation procedure, please see Section 3.3.2.
CAUTION !
19
Installation

Figure 3-2: Hand hold position for lifting
Prohibit to force with
fan shutter.
Prohibit to force with
DC connector.
Prohibit to force with
AC box.
Prohibit to force with
DC switch.
20
Installation