1. HelioProtection® Brand Introduction
Mersen (formerly Ferraz Shawmut)
Expertise in Solar Power Application

2. Agenda HelioProtection Brand Introduction
HelioProtection Fuse Products
Application Overview
UL 2579 – Fuses for Photovoltaic Systems
Applicable Customers and Why HelioProtection?

3. HelioProtection Brand
Brand Identity
A distinct logo that is easily recognizable

4. HelioProtection Brand
Brand Promise
Expertise in solar power applications
Premium offering for the PV industry
Delivering reliability and safety
Communicates Mersen’s strategic position within the solar market

5. HelioProtection Fuse Products
Three New Product Series
Series
HP6M
HP10M
HP6J
Application
String or Module Protection
Array or Inverter Input Protection
Voltage
600VDC
1000VDC
Ampere
1-30A
70-600A
Size
Midget (10x38mm)
Class J
Approvals
UL2579, IEC
UL2579

6. HelioProtection Fuse Products
Catalog Number Selection
Example: HP10M15 HP 10 M 15
HelioProtection Series
Voltage
6 = 600VDC
10 = 1000VDC
Fuse Class
M = Midget
J = Class J
Ampere Rating

7. Application Overview

8. Application Overview

9. Application Overview
String Combiner Box

10. Application Overview
Array Combiner Box
Inverter Input

11. The importance of UL 2579 – Fuses for Photovoltaic Systems

12. UL 2579 – Fuses for Photovoltaic Systems
Background Information
UL 248 – Low Voltage Fuses
Divided into 16 sub-categories
Class CC, Class RK, Class H, Class J, Plug Fuses, etc…
Intended Applications
Power Controls
Power Low Voltage Distribution
Power Electronics

13. UL 2579 – Fuses for Photovoltaic Systems
General Performance Characteristics
Voltage Rating may be up to 1500VDC
Interrupting Rating is 10kA minimum
Classification: Non-Renewable, Not Current-Limiting

14. UL 2579 – Fuses for Photovoltaic Systems
Markings
In addition to the marking requirements in UL 248-1, the fuse must be marked with the letters “PV” or “gPV” or the text “Photovoltaic Fuse”.

15. UL 2579 – Fuses for Photovoltaic Systems
Expanded tests specific to PV application
Verification of Freedom from Unacceptable Levels of Thermally Induced Drift
Electrical performance verified after repeated thermal cycling
Simulates night to day thermal climate cycle
Verification of Functionality at Temperature Extremes
Fuse to be conditioned at 50°C and electrically tested to verify functionality (compared to 25°C for UL 248)
Current Cycling
Fuses undergo current and thermal cycling to verify life expectancy and to prevent pre-mature fuse opening

16. Product Resources

17. Product Resources Collateral Data Sheets Solar Power Brochure
HP6M, HP10M, HP6J
Solar Power Brochure
Performance Curves
Time-Current Curves
Temperature De-rating
Watts Loss
Outline Drawings
PIQ Online Interactive Quiz

18. Applicable Customers and Why HelioProtection?

19. Applicable Customers System Integrators and Contractors
Delivers: No-hassles, certainty
Solar Inverter OEMs
Delivers: Premium protection, cost savings, reliability
Combiner Box Manufacturers
Utility Power Generation and Distribution
Delivers: revenue generation – no downtime, safety

20. Why HelioProtection Fuses?
Easy Product Selection
Dedicated solar brand delivers reliable, easy specification and selection
Meets UL 2579 Standard
Tested for night to day transition
Tested to electrical operate at extreme temperatures
Current cycled for increased liability and longevity
Size Advantages
HP6J frame size is minimum one-third smaller than competitor offering

21. Questions & Answers