PV Surge Protector

Type 1+ 2 DC photovoltaic surge protection device TRS3 series

  • Varistor surge arrester
  • for protection of PV systems on the roofs, where the separating spark-over distance is not kept
  • Optional remote fault signalling(S)
  • Installtion to PV system

Type 1+2, T1+T2, solar pv surge protection device

Surge Protective Devices (SPDs) provide protection against electrical surges and spikes, including those caused directly and indirectly by lightning. They can be utilized as complete devices or as components within electrical equipment.

Photovoltaic (PV) system converts solar energy into direct current electricity. PV system ranges from small, rooftop-mounted or building-integrated systems with capacities from a few to several tens of kilowatts, to large utility-scale power stations of hundreds of megawatts. The potential impact of lightning events increases with PV system size. At locations with frequent lightning, unprotected PV systems will suffer repeated and significant damages. This results in substantial repair and replacement costs, system downtime and loss of revenue. Properly installed surge protective devices (SPDs) will minimize the potential impact of lightning events.

Sensitive electrical equipments of PV system like AC/DC Inverter, monitoring devices and PV array must be protected by surge protective devices (SPD).

To determine the proper SPD module for the PV system and its installation, you must know:

1.the lightning round flash density;

2.the system's operating temperature;

3.the system's voltage;

4.the system's short circuit current rating;

5.the level of waveform that is to be protected against (indirect or direct lightning); and the nominal discharge current.

The SPD that is provided on the dc output must have a dc MCOV equal to or greater than the maximum photovoltaic system voltage of the panel.

THOR TRS3-C40 series Type 1+2 DC SPDs for PV solar system can be like Ucpv DC500V,600V,800V,1000V,1200V, and the max 1500v.

Device Category

Parameter/Type TRS3-C40

Maximum operating voltage mode

+/-, +/PE, -/PE                                              UCPV

1000 V DC
Lightning impulse current (10/350 μs)               Iimp 6, 25 kA
Nominal discharge current (8/20μs)                      In 20 kA
Maximum discharge current (8/20μs)                Imax 40 kA
Voltage protection level mode +/PE, -/PE            Up ≤ 4,0 kV
Short-circuit current rating                               ISCPV 100 A DC
Response time                                                     ta < 25ns
Cross-section of connected conductors solid (min/max) 16 mm2 / 35 mm2
Cross-section of connected conductors stranded (min/max) 16 mm2 / 35 mm2
Fault indication red indication field
Remote indication potential-free change-over contact
Remote indication contacts 250 V / 0,5 A AC, 250 V / 0,1 A DC
Cross-section of remote indication conductors 1,5 mm2 
Degree of protection IP20
Range of operating temperatures (min/max) -40℃~+70℃
Humidity range 5%~95%
Mounting DIN rail 35 mm
According to standard

EN 61643-31, 

IEC 61643-31 / T1+T2

Remarks Other UCPV can be customized.(1200V DC,1500V DC, etc.)