610-635 Watt mono-facial module lower LID/LeTID
Key attributes
| Brand | Wone |
| Model NO. | 66HL4M-(V) 610-635 Watt MONO-FACIAL MODULE |
| Maximum Power | 635Wp |
| Series | 66HL4M-(V) |
Product descriptions from the supplier
Certification
IEC61215:2021 / IEC61730:2023 ·
IEC61701 / IEC62716 / IEC60068 / IEC62804 ·
ISO9001:2015: Quality Management System ·
ISO14001:2015: Environment Management System ·
ISO45001:2018: Occupational health and safety management systems.
Features
N-type modules with Tunnel Oxide Passivating Contacts (TOPcon) technology offer lower LID/LeTID degradation and better low light performance.
N-type modules with Solar's HOT 3.0 technology offer better reliability and efficiency.
High salt mist and ammonia resistance.
Certified to withstand: 5400 Pa front side max static test load 2400 Pa rear side max static test load.
Better light trapping and current collection to improve module power output and reliability.
Minimizes the chance of degradation caused by PID phenomena through optimization of cell production technology and material control.
Mechanical Characteristics
Packaging Configuration
Specifications (STC)
Application Conditions
Engineering Drawings
*Note: For specific dimensions and tolerance ranges, please refer to the corresponding detailed module drawings.
Electrical Performance & Temperature Dependence
What is the LID/LeTID phenomenon?
LID (Light Induced Degradation) and LeTID (Light and Elevated Temperature Induced Degradation) are two phenomena that affect the performance of solar cells. Especially in high-power output modules, these issues are particularly important. The following is an explanation of the LID and LeTID phenomena and their impact on 610-635 watt single-sided modules.
LID：LID refers to the performance degradation phenomenon that occurs when solar cells are exposed to sunlight for the first time. This phenomenon is mainly due to the formation of boron-oxygen complexes in the battery material (usually p-type monocrystalline silicon) under illumination, resulting in a reduction in the efficiency of the battery.
LeTID：LeTID is another performance degradation phenomenon. It occurs when the battery operates under high temperature (for example, above 70 °C) and illumination conditions. The performance degradation caused by LeTID is more serious than that of LID, and the recovery speed is slower.
Related Products
-
695 W - 730 W High Effficiency Bifacial N-type Heterojunction(HJT) Technology
-
640 W - 670 W Bifacial high-power Dual cell PERC module (mono)
-
690 W - 720 W High-power N-type TOPCON bifacial modules
-
625-650 Watt bifacial module with dual glass
-
580-605 Watt mono-facial module with Tunnel Oxide Passivating Contacts (TOPcon) technology
Related Knowledges
-
Impact of DC Bias in Transformers at Renewable Energy Stations Near UHVDC Grounding ElectrodesImpact of DC Bias in Transformers at Renewable Energy Stations Near UHVDC Grounding ElectrodesWhen the grounding electrode of an Ultra-High-Voltage Direct Current (UHVDC) transmission system is located close to a renewable energy power station, the return current flowing through the earth can cause a rise in ground potential around the electrode area. This ground potential rise leads to a shift in the neutral-point potential of nearby power transformers, inducing DC bias (or DC offset) in their01/15/2026 -
HECI GCB for Generators – Fast SF6 Circuit Breaker1.Definition and Function1.1 Role of the Generator Circuit BreakerThe Generator Circuit Breaker (GCB) is a controllable disconnect point located between the generator and the step-up transformer, serving as an interface between the generator and the power grid. Its primary functions include isolating generator-side faults and enabling operational control during generator synchronization and grid connection. The operating principle of a GCB is not significantly different from that of a standard c01/06/2026 -
Distribution Equipment Transformer Testing, Inspection, and Maintenance1.Transformer Maintenance and Inspection Open the low-voltage (LV) circuit breaker of the transformer under maintenance, remove the control power fuse, and hang a “Do Not Close” warning sign on the switch handle. Open the high-voltage (HV) circuit breaker of the transformer under maintenance, close the grounding switch, fully discharge the transformer, lock the HV switchgear, and hang a “Do Not Close” warning sign on the switch handle. For dry-type transformer maintenance: first clean the porcel12/25/2025 -
How to Test Insulation Resistance of Distribution TransformersIn practical work, insulation resistance of distribution transformers is generally measured twice: the insulation resistance between thehigh-voltage (HV) windingand thelow-voltage (LV) winding plus the transformer tank, and the insulation resistance between theLV windingand theHV winding plus the transformer tank.If both measurements yield acceptable values, it indicates that the insulation among the HV winding, LV winding, and transformer tank is qualified. If either measurement fails, pairwise12/25/2025 -
Design Principles for Pole-Mounted Distribution TransformersDesign Principles for Pole-Mounted Distribution Transformers(1) Location and Layout PrinciplesPole-mounted transformer platforms should be located near the load center or close to critical loads, following the principle of “small capacity, multiple locations” to facilitate equipment replacement and maintenance. For residential power supply, three-phase transformers may be installed nearby based on current demand and future growth projections.(2) Capacity Selection for Three-Phase Pole-Mounted Tr12/25/2025 -
Transformer Noise Control Solutions for Different Installations1.Noise Mitigation for Ground-Level Independent Transformer RoomsMitigation Strategy:First, conduct a power-off inspection and maintenance of the transformer, including replacing aged insulating oil, checking and tightening all fasteners, and cleaning dust from the unit.Second, reinforce the transformer foundation or install vibration isolation devices—such as rubber pads or spring isolators—selected based on the severity of vibration.Finally, strengthen sound insulation at weak points of the ro12/25/2025
