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HiT-H510LF-FB(ZB) vs HiS-T640NJ 6 of 19 identical Swap Change panels

Hyundai HiT-H510LF-FB(ZB) vs Hyundai HiS-T640NJ

HiT-H510LF-FB(ZB)
510 Wp 22.90 % HJT Bifacial
Open panel page Datasheet PDF
VS
HiS-T640NJ
640 Wp 22.90 % TOPCon Bifacial
Open panel page Datasheet PDF
The verdict

HiT-H510LF-FB(ZB) leads on the differences that matter

The largest is temperature coefficient: 0.050 %/°C better in heat. 6 of 19 comparable parameters are identical.

See all 13 differences
How alike are they
6 of 19 comparable
parameters are identical
identical differs
01

What actually differs

13 of 19 parameters
Parameter HiT-H510LF-FB(ZB) HiS-T640NJ Difference
Temperature coefficient -0.240 %/°C -0.290 %/°C 0.050 %/°C better in heat
Rated power 510 Wp 640 Wp 130 W more power
Weight 27.1 kg 34.7 kg 7.6 kg lighter
Product warranty 30 yrs 12 yrs 18 yrs longer
Annual degradation 0.30 %/yr 0.40 %/yr 0.10 %/yr slower
Open-circuit voltage 40.98 V 57.77 V 16.79 V apart
Module area 2.223 m² 2.795 m² 0.573 m² apart
Short-circuit current 15.70 A 14.06 A 1.64 A apart
Cell technology HJT TOPCon HJT vs TOPCon
Voltage at max power 34.38 V 47.74 V 13.36 V apart
Cell count 108 156 48 cells apart
Current at max power 14.84 A 13.41 A 1.43 A apart
Dimensions 1960x1134x30 mm 2465x1134x30 mm 1960x1134x30 mm vs 2465x1134x30 mm
02

What it means on a roof

Thirty years of production
Each panel's own declared degradation curve, at 1,200 kWh/kWp a year
HiT-H510LF-FB(ZB)
17,378 kWh
HiS-T640NJ
21,473 kWh
Lifetime gap
4,095 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario HiT-H510LF-FB(ZB) HiS-T640NJ
Standard test conditions 25 °C 100.0% of rated power 510 W 640 W
Cool, bright day 40 °C 95.7% of rated power 492 W 612 W
Typical summer roof 55 °C 91.3% of rated power 473 W 584 W
Hot roof 70 °C 87.0% of rated power 455 W 556 W
03

Full specification

Parameter HiT-H510LF-FB(ZB) HiS-T640NJ Difference
Power and efficiency
Rated power 510 Wp 640 Wp +130 W for HiS-T640NJ
Module efficiency 22.90 % 22.90 % Same
Power density 229.5 Wp/m² 229.0 Wp/m² Effectively the same
Open-circuit voltage 40.98 V 57.77 V 16.79 V apart
Voltage at max power 34.38 V 47.74 V 13.36 V apart
Short-circuit current 15.70 A 14.06 A 1.64 A apart
Current at max power 14.84 A 13.41 A 1.43 A apart
Temperature
Temperature coefficient -0.240 %/°C -0.290 %/°C +0.050 %/°C for HiT-H510LF-FB(ZB)
Mechanical
Dimensions 1960x1134x30 mm 2465x1134x30 mm 1960x1134x30 mm vs 2465x1134x30 mm
Module area 2.223 m² 2.795 m² 0.573 m² apart
Weight 27.1 kg 34.7 kg -7.6 kg for HiT-H510LF-FB(ZB)
Weight per kWp 53.1 kg/kWp 54.2 kg/kWp Effectively the same
Warranty and degradation
Product warranty 30 yrs 12 yrs +18 yrs for HiT-H510LF-FB(ZB)
Performance warranty 30 yrs 30 yrs Same
Annual degradation 0.30 %/yr 0.40 %/yr -0.10 %/yr for HiT-H510LF-FB(ZB)
Technology
Cell technology HJT TOPCon HJT vs TOPCon
Cell type Monocrystalline Monocrystalline Same
Cell count 108 156 48 cells apart
Bifacial Yes Yes Same
04

Against the whole database

14,005 panels
Efficiency
#2,359 vs #2,359
Tied - the same position in the database
Power density
#2,316 vs #2,389
HiT-H510LF-FB(ZB) leads by 73 places
Heat behaviour
#13 vs #2,165
HiT-H510LF-FB(ZB) leads by 2,152 places
Weight
#6,941 vs #8,447
HiT-H510LF-FB(ZB) leads by 1,506 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#2,661 vs #2,090
HiS-T640NJ leads by 571 places
05

More useful comparisons

Open the full database
Same series, other bin
Hyundai HiT-H510LF-FB(ZB) vs Hyundai HiT-H520LF-FB(ZB)
3 differences, the largest is module efficiency
Same series, other bin
Hyundai HiT-H510LF-FB(ZB) vs Hyundai HiT-H515LF-FB(ZB)
One difference: module efficiency
Same series, other bin
Hyundai HiT-H510LF-FB(ZB) vs Hyundai HiT-H505LF-FB(ZB)
One difference: module efficiency
Same series, other bin
Hyundai HiT-H510LF-FB(ZB) vs Hyundai HiT-H500LF-FB(ZB)
3 differences, the largest is module efficiency
Same series, other bin
Hyundai HiS-T640NJ vs Hyundai HiS-T635NJ
The same specification on paper
Same series, other bin
Hyundai HiS-T640NJ vs Hyundai HiS-T630NJ
3 differences, the largest is module efficiency
06

Written summary

07

Questions about this pairing

Which panel is better: Hyundai HiT-H510LF-FB(ZB) or Hyundai HiS-T640NJ?
According to our database: Hyundai HiT-H510LF-FB(ZB) tolerates heat better (temp coeff -0.240%/°C vs -0.290%/°C). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Hyundai HiT-H510LF-FB(ZB) and Hyundai HiS-T640NJ?
Hyundai HiT-H510LF-FB(ZB) has a module efficiency of 22.90%, while Hyundai HiS-T640NJ is 22.90%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Hyundai HiT-H510LF-FB(ZB) use vs Hyundai HiS-T640NJ?
Hyundai HiT-H510LF-FB(ZB) uses HJT cells; Hyundai HiS-T640NJ uses TOPCon. Modern n-type technologies (TOPCon, HJT, BC) typically deliver higher efficiency and lower degradation compared to older PERC (p-type) cells.
What is the warranty on Hyundai HiT-H510LF-FB(ZB) and Hyundai HiS-T640NJ?
Hyundai HiT-H510LF-FB(ZB) has a 30 years power warranty; Hyundai HiS-T640NJ has a 30 years power warranty. The power warranty guarantees a minimum percentage of rated output at the end of the warranty period (typically 80-87%). Product (materials) warranties are usually shorter.
Are Hyundai HiT-H510LF-FB(ZB) and Hyundai HiS-T640NJ bifacial panels?
Both Hyundai HiT-H510LF-FB(ZB) and Hyundai HiS-T640NJ are bifacial - they capture reflected light from the ground, which can add 5-15% more annual energy on ground-mount or elevated rooftop installations with a light surface beneath.

Shop prices: See 38 Hyundai offers

Every figure here is from the manufacturers' own datasheets - a dash means the value is not published, never an estimate. The thirty-year projection and the temperature scenarios are calculations from those figures, and each states its assumption above.