Type 1+2 Surge Protection for 1000V DC Solar PV Systems
LY1-C40PV/2(S) 1000V is a two-pole pluggable Type 1+2 DC surge protective device designed for photovoltaic strings, combiner boxes, inverter DC inputs, and high-voltage DC distribution systems. Its high-energy MOV modules provide protection for both positive and negative DC conductors, with 20kA nominal discharge current, 40kA maximum discharge current, and a listed 6.25kA impulse current.
Class I+II / Type 1+2 protection for 1000V DC systems
Two-pole protection for DC+ and DC− conductors
20kA In, 40kA Imax, and 6.25kA Iimp capability
Replaceable cartridges with visual status indication
Suitable Applications
LY1-C40PV/2(S) 1000V is designed for high-voltage photovoltaic and DC power systems requiring coordinated protection of both positive and negative conductors.
PV String Combiner Boxes
Protects 1000V DC photovoltaic strings and combiner-box circuits against lightning and switching surges.
PV Inverter DC Inputs
Suitable for protecting the DC input side of string, hybrid, and central solar inverters.
DC Distribution Cabinets
For 1000V DC distribution cabinets, switching panels, and high-voltage DC equipment circuits.
Energy Storage DC Systems
Suitable for compatible battery charging cabinets and energy-storage DC circuits up to 1000V DC.
FAQ
Common questions about LY1-C40PV/2(S) 1000V two-pole pluggable Type 1+2 DC surge protective device selection and installation.
What is LY1-C40PV/2(S) 1000V used for?
It is designed to protect 1000V DC photovoltaic and DC power systems against lightning-induced surges and switching transient overvoltage. Typical locations include PV combiner boxes, inverter DC inputs, and DC distribution cabinets.
Is this a Type 1+2 DC SPD?
Yes. The product is classified as Class I+II / Type 1+2 and lists both an 8/20μs discharge-current rating and a 10/350μs impulse-current rating.
What discharge current ratings does it provide?
It provides 20kA nominal discharge current In, 40kA maximum discharge current Imax, and a listed 6.25kA impulse discharge current Iimp.
What does the two-pole configuration protect?
The two-pole configuration provides separate surge-protection paths for the positive and negative DC conductors relative to protective earth.
Can the protection cartridges be replaced?
Yes. The pluggable design allows individual protection cartridges to be inspected or replaced without removing the permanently wired base.
What should be confirmed before ordering?
Confirm the maximum PV system voltage, 1000V DC operating requirement, DC+ and DC− protection arrangement, required Up level, backup-fuse coordination, conductor size, DIN-rail space, and remote-contact requirement.
