Maintenance; Replace Surge Protection Device (Spd) - Delta RPI M30A Operation And Installation Manual

Please check the unit regularly. If there are any impaired or loose parts, please
contact your solar installer. Ensure that there are no foreign objects in the path
of the heat outlet.
Before any maintenance, please switch AC and DC power off to avoid risk
of electronic shock.

6.1 Replace Surge Protection Device (SPD)

RPI M50A_120 model have surge protection device (SPD) at both DC and
AC side. Table 6-1 reveals the specifications of SPD.
SPD(DC)
Part number: GPU1-ZS1000 Y
Work voltage:1000 Vdc
Work Amp In (8/20): 20kA
Rate Amp I max(8/20): 40kA
Temperature: -40 C~85 C
Item fail: Green light will turn off
Manufacturers: ShangHai GEHE Lighti

6.Maintenance

WARNING
Part number: GPU1-C4/690/1P Y
Work voltage: 690 Vac
Work Amp In (8/20): 15kA
Rate Amp Imax (8/20): 30kA
Temperature: -40 C~85 C
Item fail: Red upright bulb
Manufacturers: ShangHai GEHE Lighti
Table 6-1 SPD Specifications
55
Maintenance
SPD(AC)