URE D6M Series User manual

Ver 4.0
Installation Manual
D6M Series : D6M_H3A / D6M_H4A
D7M Series : D7M_H7A / D7M_H8A
D2M Series : D2M_H7A / D2M_H8A
D7K Series : D7K_H7A / D7K_H8A
D2K Series : D2K_H7A / D2K_H8A
D6K Series : D6K_H3A / D6K_H4A
D1K Series : D1K_H3A / D1K_H4A
This manual is for URE photovoltaic modules listed above
For more information, please visit us at www.UREcorp.com ----------------------------------------------------------------
Contact us
Headquarters: 7, Li-Hsin 3rd Rd., Hsinchu Science Park, Hsinchu, 30078, Taiwan
Tel: [phone] Fax: [phone] E-mail: [e-mail]

1
Ver. 3.0
Content
General information 2
Safety precaution for the installing solar PV system 2
Fire safety 3
Mechanical installation 4
Electrical installation 8
Commission & Maintenance 12
Disclaimer of Liability 14
Data form for electrical equipment and machinery 22

2
Ver. 3.0
General Information
This manual contains information regarding the installation and safe handling of URE photovoltaic (PV)
modules. All instructions should be read and understood before attempting to install. If there are any
questions, please contact your dealer or URE for further information. The installer should conform to all
safety precautions in the manual when installing modules. Before installing a PV system, the installer should
become familiar with mechanical and electrical requirement for the PV system. All installations must be
performed in compliance with all applicable regional and local codes or other national and international
electrical standards. Keep this manual in a safe place for future reference.
Safety Precaution for Installing Solar PV System
- URE modules are qualified for Application Class A: Hazardous voltage (greater than 50 V DC) or
hazardous power applications (greater than 240 W), where general contact access is anticipated.
Modules qualified for safety under IEC 61730-1, IEC 61730-2 and within this application class are
considered to meet the requirements for Safety Class II.
- Installing PV systems should be performed only by qualified or licensed experts.
- Ensure that the URE modules are fastened to proper mounting systems designed for appropriate
mechanical loads resulting from wind and snow, and the proper weight of the modules.
- It is suggested that completely cover the module with an opaque material during installation to keep
electricity from being generated.
- Be very careful when disconnecting wires connected to PV modules that are exposed to sunlight, an
electric arc may result. Such arcs may cause burns, may start fires and may createproblems.
- Artificially concentrated sunlight shall not be directed on the module or panel.
- PV module product operating temperature is from -40°C to 40°C
- Use only insulated tools that are approved for working on electrical installations.
- Routine maintenance of module shall not involve breaking or disturbing the bonding path.
- All of installation and handling activities must be carried out with due care, all collisions must be
avoided.
- Lift pallets by a fork lifter by a minimum of 70% of pallet length when loading and unloading from the
length side of a pallet; and 100% of pallet width when loading and unloading from the width side of a
pallet.
- Do not attempt to disassemble the module or remove any part of module.
- Do not remove the attached nameplate or components.
- Do not stand or walk on modules, otherwise it will result in unexpected permanent or
impermanent module defects, such as cracks, snail trails and etc.
Please read this manual carefully before installing the modules.
Non-compliance with these instructions may void the modules
warranty.

3
Ver. 3.0
• It is recommended to reserve a service walkway when designing the solar PV system
- Do not place heavy objects on modules.
- Do not drop sharp objects on modules.
- Do not lift or transport modules by grasping the junction box or electrical leads.
- Do not drop the module down hard on any surface.
- Do not perform any work if the cables, connectors or junction box are wet due to the risk of electrical
shock.
- Do not work in rain, snow or windy conditions.
- Under normal conditions, a photovoltaic module is likely to experience conditions that produce more
current and/or voltage than reported at standard test conditions. Accordingly, the values of Isc and Voc
marked on this module should be multiplied by a factor of 1.25 when determining component voltage
ratings, conductor capacities, fuse sizes, and size of controls connected to the PV output. For example,
a safety factor for Voc and Isc of 1.25 is recommended since irradiance is often higher than 1000 W/m2
and temperature below 25°C may raise Voc. Refer to Section 690-8 of the National Electrical Code of an
additional multiplying factor of 125 percent (80 percent de-rating) which may beapplicable.
Fire Safety
- URE modules are tested for fire safety based on its construction according to UL 790 standard. The fire
rating of this module is valid only when mounted in the manner specified in the mechanical mounting
instructions.
- To use components such as earth ground fault circuit breakers, fuses and circuit breakers as required
by local authority in the PV system for fire prevention.
- The fire safety of building may be affected by the roof construction and installations. Improper
installation may cause hazards in the event of fire.
- Consult with local authority for guidelines and requirements for building or structural firesafety.
- For roof installation, PV modules should be mounted over a fire resistant roof covering which is rated
for the application.
- Since sparks may be produced, do not install modules near equipment or locations where flammable
gases can be generated or collected.
- In case of fire, URE modules on the roof are likely to produce dangerous DC voltage and may have
potential hazard, even in the case of:
• Low light intensity
• Modules being disconnected from the inverter
• Modules being partly or entirely destroyed

4
Ver. 3.0
- When fire has been extinguished or for the duration of fire, stays away from all elements of the PV
system. Have your installer perform the necessary steps to bring the PV system back into a safe
condition.
Mechanical Installation
- The design and installation of photovoltaic systems shall be in accordance with the National Electrical
Code (NEC), the Canadian Electrical Code (CEC) and the national regulation of the country where the
modules will be installed.
- To install the modules in proper direction such as facing south in northern latitudes and north in
southern latitudes for best power output.
- Please note that any shadows cast by the modules do not fall on other modules behind them. This can
have adverse effects on overall system performance or may result in permanent damage to modules.
- PV module should be installed no higher than 2,000 m altitude. The modules should not be shaded at
any time. If the shade occurred on module surface, it will result in lower power output or may result in
permanent damage to the module.
- Do not modify the PV module frames mechanically or chemically. It will void thewarranty.
- Clearance between the module frame and mounting surface may be required to allow the cool
ambient air circulating behind the module. It is necessary for optimum moduleperformance.
- All fasteners (nuts, bolts, washers, screws, etc.) must be stainless steel made except other specification
(it should use corrosion-proof fixing material for certain environment).
- The module mounting structure must be made of durable, corrosion-resistant and UV-resistant
material.
- There are two approved methods to mount URE modules to the supporting structure. For all mounting
methods, a minimum gap between the modules of 5 mm is required to allow for thermal expansion.
- Suggest mounting tilt angle is above 10 degree to reduce dust accumulation.
- The minimum contact area between module and the system area is 40x35 mm2by eachpoint.
Method (1) : Attachment Using Screw
- Each long side frame has 4 mounting slots with dimension of 9 x 14 mm used to secure the module to
supporting structure, as shown in Fig. 1.1.
- For normal installation, modules must be securely fastened to the mounting structure using at least 4
symmetrical mounting slots for normal installation as shown in Figure 1.2. If additional wind or snow
loads are anticipated for this installation (≤ 3600 Pa), additional mounting slots are also needed as
shown in Fig. 1.3.
- The module frame must be fastened to supporting structure using M8 stainless steel hardware
together with spring washers and flat washers (all fitting components must be corrosion-proof

5
Ver. 3.0
- material) as shown in Fig. 1.4.
- The applied torque is about 16 ~ 20 N-m.
- Here the standoff method or the rack method is recommended. The recommended stand-off height is
140 mm as shown in Fig. 1.5.
Fig. 1.1 Fig. 1.2 Fig. 1.3
Fig. 1.4 Fig. 1.5

6
Ver. 3.0
Clamp A
Clamp B
Method (2) : Attachment Using Clamp
- The modules can be mounted by using clamps (Clamp A and Clamp B) which is designed for solar
modules as shown in Fig. 2.1.
- Modules must be mounted at 4 symmetrical points by the means shown in Fig. 2.2 and Fig. 2.3.
- The clamping position and relatively acceptable loading is shown in Fig. 2.4.
- The clamps must be fastened to supporting structure using M8 stainless steel hardware (all fitting
components must be corrosion-proof material).
- The applied torque is about 16 ~ 20 N-m.
- The modules are supported parallel to surface of the building wall or roof. Sufficient clearance
(recommended is 140 mm) between the module frame and mounting surface of the wall or roof is
required to prevent wiring damage and allow cool air to circulate behind the module.
Fig. 2.1 Fig. 2.2
Fig. 2.3

7
Ver. 3.0
Clamping at Module Long Side Frame
Illustration
Load ≤ 3600 Pa
Clamping at Module Long Side Frame (Frame Height 40 / 35 mm)
Module Series
Module
Dimension
Acceptable Clamping Range
Distance from
Edge to L/8
Load ≤ 1600 Pa
(L/4)
Load ≤ 3600 Pa
(L/8 ~ L/4)
D6M_H3A/D6K_H3A
1640 x 992 mm
400 mm
200 mm
200 mm
D6M_H4A/D6K_H4A
1956 x 992 mm
482 mm
248 mm
248 mm
D1K_H3A
1667 x 1002 mm
410 mm
197.5 mm
197.5 mm
D1K_H4A
1989 x 1002 mm
489 mm
235.5 mm
235.5 mm
D7M_H7A/D7K_H7A
1675 x 992 mm
418.5 mm
209.5 mm
209.5 mm
D7M_H8A/D7K_H8A
2000 x 992 mm
497.5 mm
247.5 mm
247.5 mm
D2M_H7A/D2K_H7A
1702x1002 mm
418 mm
201.5 mm
201.5 mm
D2M_H8A/ D2K_H7A
2028x1002 mm
498 mm
240 mm
240 mm
Fig. 2.4

8
Ver. 3.0
Electrical Installation
Grounding
- All module frames and mounting racks must be properly electrically grounded in accordance with
respective national electrical code and local authority.
- A bolt, screw, or other parts used for bonding purposes within a module or panel shall not be intended
for securing the complete device to the supporting surface or frame.
- Electrically ground the frame of the module or array to avoid the hazards of electric shock andfire.
- Bonding shall be by a positive means, such as clamping, riveting, bolted or screwed connectors,
welding, soldering or brazing. If the bonding means depends upon screw threads, two or more screws,
or two full threads of a single screw must engage the metal.
- The array frame shall be grounded in accordance with NEC requirements for grounding solar electrical
system.
- The module frame must be properly electrically grounded.
- The grounding wire must be properly fastened to the module frame to assure good electrical contacts.
- Each long side frame has 3 grounding holes with 4 mm diameter and marked with a symbol “ ”
adjacent to their location for ground contact. In addition, there is a grounding hole at each short side
frame in order to increase operation friendly. The location of grounding holes are shown on Fig. 3.1.
Fig 3.1

9
Ver. 3.0
- Grounding wires must be connected to the module frame at one of these locations.
- Great care should be exercised to ensure that corrosion caused by the grounding means is avoided.
- Corrosion can increase the resistance of the grounding connection on the module, or can even cause
the grounding connection to fail entirely.
- Corrosion can be caused by the effects of weather, humidity, dirt and so on. Corrosion can also be
caused when two dissimilar metals contact each other (galvanic action).
- All grounding hardware (nuts, bolts, washers, screws, etc.) must be stainless steel except other
specification (it should use corrosion-proof fixing material), as shown in Fig. 3.2.
- The grounding wire should not be smaller than 12 AWG.
- The grounding wire should be multi conductor and rated of 105°C and 1000V.
- Recommended torque value is 2.3 N-m (20.4 lb-in).
There are two approved methods to ground URE modules.
Method (1) Grounding Using Bolt and Nut
- To the grounding hole, secure the grounding wire with stainless steel hardware consisting of bolt,
spring washer, flat washer, cup washer, star washer and nut as shown in Fig. 3.2.
- Length of bolts should not be more than 25 mm in order to avoid contacting the back sheet of module.
- The use of cup washer, also called terminal cup washers, is to prevent the grounding wire slipping out
from under the screw head (and/or the flat washer).
- To make sure the cup washer is placed between the wire and module frame.
- Choose an adequate size for the cup washer and flat washer so the wire is fully clamped between
them.
- The star washers must be used to make the electrical connection between grounding hardware and
module frame by scraping off the anodized film of Al frame.
Method (2) Grounding Using Grounding Lug
- To select a grounding lug listed for direct burial and outdoor use (tin-plated, solid copper lay-in lug
with a stainless-steel set screw) capable of accepting a 4-12 AWG copper conductor, e.g. ILSCO GBL-
4DBT, Burndy CL50-1TN.
- Length of bolts should not be more than 20mm in order to avoid contacting the back sheet of the
module.
- The star washers must be used to make the electrical connection between grounding hardware and
module frame by scraping off the anodized film of Al frame.
- To the grounding hole, secure the lug with stainless steel hardware consisting of bolt, flat washer, star
washer and nut as shown in Fig. 3.3.

10
Ver. 3.0
Caution: Do not connect modules with wire terminations in series to
increase voltage
Fig. 3.2 Fig. 3.3
Series and Parallel Wiring
- Modules can be wired in series to increase voltage. Connect wires from the positive terminal of one
module to the negative terminal of the next module. Illustration A as below shows 4 modules
connected in series.
- The maximum open-circuit voltage of the system must not be greater than the specified maximum
system voltage of the module.
- To connect modules in parallel to increase current. Connect wires from the positive terminal of one
module to the positive terminal on the next module. Illustration B as below shows 4 modules
connected in parallel.
- Connecting modules in parallel, the wiring and connectors can become overheated at high current.
Use system wiring with suitable cross-section and connectors that are approved for use at the
maximum short-circuit current of the module. The recommended cable is PV wire with a cross section
of 4 mm2at least.
- Maximum number of series connected modules:
≤ (Maximum system voltage)/(Voc of the module at STC)

11
Ver. 3.0
- If fuse is used, number of parallel connected modules:
≤ (Maximum fuse rating)/(Isc of the module at STC)
- A minimum bending radius R≥ 5 times of Cable diameter must be maintained. (Fig 3.4)
■ Note ■
Fig. 3.4
It is recommended that paralleling modules be performed using an external junction box. However, a
small number of modules may be paralleled using the junction box on the back of the modules. Contact
your local seller for more information.
Module Wiring
- Each module has two 12 AWG standard 90°C sunlight resistant output cables each terminated with
plug & play connectors.
- The cable is suitable for applications where wiring is exposed to the sunlight directly. We recommend
that all wiring and electrical connections comply with the National Electrical Code (NEC).
- For field connections, use the solar cable with appropriate cross section according to TUV 2 PfG 1169
or use the minimum 12 AWG copper wires insulated for a minimum of 90°C and sunlight resistant as
well.
- According to IEC 60189, the insulation material used for internal wiring should have a temperature
rating of minimum 90°C.
- Wire Type: PV module interconnections should be 90°C wet-rated conductors. An allowable wire type
is using USE-2 single conductor cable and PV wire for exposed applications.
Illustration A：Series for more voltage.
Illustration B：Parallel for more current.

12
Ver. 3.0
Module Connectors:
The following PV Connectors might be provided for specified Junction Box–
- Male/Female Connectors, type PV-KST4/xy-UR (male), PV-KBT4/xy-UR (female), by Stäubli Electrical
Connectors AG. Rated 1000 Vdc, 39 A, suitable for use with 10-12 AWG PV cable.
- Male/Female Connectors, types PV-JM601 (male) and PV-JM601 (female), by JMTHY Co Ltd. Rated
1000 Vdc, 30A, suitable for use with 12 AWG PV cable.
- Male/Female Connectors, types PV-KST4-EVO 2/xy_UR (male) and PV-KBT4-EVO 2/xy_UR (female), by
Stäubli Electrical Connectors AG. Rated 1500 Vdc, 45A, suitable for use with 12 AWG PV cable.
- Male/Female Connectors, types PV-JM608 (male) and PV-JM608 (female), by JMTHY Co Ltd. Rated
1500 Vdc, 30A, suitable for use with 12 AWG PV cable.
- Male/Female Connectors, types QC4.10-35 (male) and QC4.10-35 (female), by QC Solar Co Ltd. Rated
1500 Vdc, 41A, suitable for use with 12 AWG PV cable.
Commissioning & Maintenance
All work in commissioning and maintenance of a system must be performed by a qualified PV technician.
Bypass Diode
- Modules have bypass diodes integrated in the junction box and are wired in parallel with series string.
In the unlikely event of diode failure, it is recommended to contact with URE or local agent for
checking / replacing bypass diodes.
- Be cautious of electricity shocks while commissioning and maintaining the solar powersystem.
Testing
- Test all electrical and electronic components of the system before commissioning.

13
Ver. 3.0
Maintenance
- Clean the module glass when it’s dirty, use soft water and a soft sponge or cloth for cleaning. A mild,
non-abrasive cleaning agent can be used to remove sticky dirt.
- Check the electrical and mechanical connections regularly to verify they are clean, secure and
undamaged.
Temperature Coefficient
Measurement of Temperature Coefficients
Ambient air temperature [°C]
25 ± 2
Irradiance [W / m2]
1000 ± 50
Temperature coefficient [%/°C]
(Module Temperature)
55 / 25
Temperature Coefficient
α (ISC)
0.07
β (Voc)
-0.32
δ[(Pmax)
-041
Nominal Module Operation Temperature and Performance
Nominal Module Operation Temperature and Performance
NMOT [°C]
43.65
Ambient temperature [°C]
25 ± 2
Irradiance [W/m²]
800
Performance at low irradiance [W]
78.21
Performance @ NMOT
Pmax [W]
Vmpp [V]
Impp [A]
Voc [V]
Isc [A]
FF [%]
301.15
36.62
8.23
44.77
8.68
77.52

14
Ver. 3.0
Disclaimer of Liability
- The use of this manual, the installation conditions or methods, operation, use and maintenance of PV
modules are beyond URE’s control, URE does not accept responsibility and expressly disclaims liability
for loss, damage or expense arising out of or in any way connected with such installation, operation,
use or maintenance.
- No responsibility is assumed by URE for any infringement of patents or other rights of third parties,
which may result from use of the PV modules. No license is granted by implication or under any patent
or patent rights.
- This manual information is based on URE’s knowledge and experience and is believed to be reliable.
Such information including product specification (without limitations) and suggestions do not
constitute a warranty, expresses or implied. URE reserves the right to change the manual, the PV
product, the specification or product information sheet without prior notice.

15
Ver. 3.0
Electrical Data
D6M-H3A, D6M-H4A Series
Model
Max.
Rating
Power
Open
Circuit
Voltage
Short
Circuit
Current
Max.
Power
Voltage
Max.
Power
Current
(W)
(V)
(A)
(V)
(A)
D6M290H3A
290
39.18
9.68
31.61
9.18
D6M295H3A
295
39.27
9.73
31.86
9.26
D6M300H3A
300
39.39
9.78
32.09
9.35
D6M305H3A
305
39.49
9.86
32.35
9.43
D6M310H3A
310
39.75
9.91
32.57
9.52
D6M315H3A
315
39.99
9.96
32.78
9.61
D6M320H3A
320
40.07
10.28
32.80
9.76
--
--
--
--
--
--
D6M355H4A
355
47.16
9.70
38.63
9.19
D6M360H4A
360
47.44
9.77
39.0
9.23
D6M365H4A
365
47.67
9.84
39.38
9.27
D6M370H4A
370
47.81
9.89
39.40
9.41
D6M375H4A
375
47.93
9.95
39.45
9.51
D6M380H4A
380
48.06
10.11
39.55
9.61
--
--
--
--
--
--
Max. Series fuse
15 A
Max. system
voltage
1000 VDC
Electrical data measured under Standard Test Conditions (STC): 25 °C, 1000 W/m2, AM 1.5
Values w/o tolerance are typical numbers; specification subject to change
*Voc 、 Isc 、 Power output tolerance is ± 3%

16
Ver. 3.0
D6K-H3A,D6K-H4A Series
Model
Max. Rating
Power
Open Circuit
Voltage
Short Circuit
Current
Max. Power
Voltage
Max. Power
Current
(W)
(V)
(A)
(V)
(A)
D6K305H3A
305
40.18
10.12
32.2
9.52
D6K310H3A
310
40.24
10.23
32.3
9.64
D6K315H3A
315
40.3
10.34
32.4
9.76
D6K320H3A
320
40.36
10.45
32.5
9.88
D6K325H3A
325
40.42
10.59
32.6
10
--
--
--
--
--
--
D6K375H4A
375
48.45
10.21
38.91
9.67
D6K380H4A
380
48.47
10.31
38.99
9.77
D6K385H4A
385
48.49
10.41
39.07
9.87
D6K390H4A
390
48.51
10.51
39.15
9.97
D6K395H4A
395
48.52
10.6
39.23
10.08
--
--
--
--
--
--
Max. Series fuse
20 A
Max. system voltage
1500 VDC
Electrical data measured under Standard Test Conditions (STC): 25 °C, 1000 W/m2, AM 1.5
Values w/o tolerance are typical numbers; specification subject to change
*Voc 、 Isc 、 Power output tolerance is ± 3%

17
Ver. 3.0
D7M-H7A ,D7M-H8A Series
Model
Max. Rating
Power
Open Circuit
Voltage
Short Circuit
Current
Max. Power
Voltage
Max. Power
Current
(W)
(V)
(A)
(V)
(A)
D7M310H7A
310
40.09
9.86
33.09
9.37
D7M315H7A
315
40.15
10.00
33.18
9.49
D7M320H7A
320
40.20
10.14
33.26
9.62
D7M325H7A
325
40.25
10.28
33.34
9.75
D7M330H7A
330
40.30
10.42
33.43
9.87
--
--
--
--
--
--
D7M370H8A
370
47.77
10.05
39.02
9.48
D7M375H8A
375
47.96
10.08
39.37
9.53
D7M380H8A
380
48.15
10.71
39.71
9.57
D7M385H8A
385
48.34
10.13
40.05
9.61
D7M390H8A
390
48.53
10.16
40.39
9.66
--
--
--
--
--
--
Max. Series fuse
15 A
Max. system
voltage
1000 VDC
Electrical data measured under Standard Test Conditions (STC): 25 °C, 1000 W/m2, AM 1.5
Values w/o tolerance are typical numbers; specification subject to change
*Voc 、 Isc 、 Power output tolerance is ± 3%

18
Ver. 3.0
D2M-H7A ,D2M-H8A Series
Model
Max. Rating
Power
Open Circuit
Voltage
Short Circuit
Current
Max. Power
Voltage
Max. Power
Current
(W)
(V)
(A)
(V)
(A)
D2M320H7A
320
40.22
10.30
33.20
9.64
D2M325H7A
325
40.28
10.44
33.30
9.76
D2M330H7A
330
40.34
10.52
33.40
9.88
D2M335H7A
335
40.40
10.63
33.50
10.63
--
--
--
--
--
--
D2M385H8A
385
48.41
10.26
39.96
9.64
D2M390H8A
390
48.44
10.55
40.20
9.95
D2M395H8A
395
48.44
10.45
40.12
9.85
D2M400H8A
400
48.46
10.55
40.20
9.95
--
--
--
--
--
--
Max. Series fuse
15 A
Max. system
voltage
1000 VDC
Electrical data measured under Standard Test Conditions (STC): 25 °C, 1000 W/m2, AM 1.5
Values w/o tolerance are typical numbers; specification subject to change
*Voc 、 Isc 、 Power output tolerance is ± 3%

19
Ver. 3.0
D7K-H7A ,D7K-H8A Series
Model
Max. Rating
Power
Open Circuit
Voltage
Short Circuit
Current
Max. Power
Voltage
Max. Power
Current
(W)
(V)
(A)
(V)
(A)
D7K315H7A
315
40.16
10.19
33.1
9.52
D7K320H7A
320
40.22
10.3
33.2
9.64
D7K325H7A
325
40.28
10.44
33.3
9.76
D7K330H7A
330
40.34
10.52
33.4
9.88
D7K335H7A
335
40.4
10.63
33.5
10
--
--
--
--
--
--
D7K385H8A
385
48.41
10.26
39.96
9.64
D7K390H8A
390
48.43
10.36
40.04
9.74
D7K395H8A
395
48.44
10.45
40.12
9.85
D7K400H8A
400
48.46
10.55
40.2
9.95
D7K405H8A
405
48.47
10.65
40.28
10.05
--
--
--
--
--
--
Max. Series fuse
20 A
Max. system voltage
1500 VDC
Electrical data measured under Standard Test Conditions (STC): 25 °C, 1000 W/m2, AM 1.5
Values w/o tolerance are typical numbers; specification subject to change
*Voc 、 Isc 、 Power output tolerance is ± 3%