techno switch ST401DI Photo Voltaic System Surge Protection Device User Guide
- June 4, 2024
- techno switch
Table of Contents
P HOTOVOLTAIC SYSTEM SURGE PROTECTION DEVICE
IN COMPLIANCE WITH NORMATIVES
EN 61643-11
Suitable for DC photovoltaic system
Protection against atmospheric discharges
Parallel installation to DC mains
Disconnection from the DC network in case of failure
Common and differential mode protection
DIN rail mount modular case
Protection class 2
Recommended cable section 16 mm?
Max cables section 25 mm?
Response time < 25ns
UL94 V-0 plastic case
Replaceable cartridge
Cartridge status visual indicator (red: replace)
SIZE
CODE| PROTECTION LEVEL (up)| MAX CONTINUOS
VOLTAGE (Uc)| MAX DISCHARGE
CURRENT |max(8/20)| NORMAL DISCHARGE
CURRENT in(8/20)| RESIDUAL VOLTAGE
ures(5kA)| MODULES| WEIGHT
---|---|---|---|---|---|---|---
I| kV| Vdc| kA| kA| kV| DIN| g
ST401 DI| <4.0
1| 1000| 40| 20| <2,8| 3| 320
ST401 CA| cartuccia di ricambio 40kA / surge protector cartdrige 40kA|
55
SAFETY INSTRUCTION
- Installation must be performed only by qualified personnel.
- National electrical installation rules must be followed.
- The device must be used only as surge protector and according to the conditions described in this document.
- Surge protectors must be selected in relation with AC electrical system.
- Dedicated fuses must be installed in the surge protector branch (see wiring diagram).
- In case of red indicator, replace the cartridge.
INSTALLATION
- Disconnect the power supply.
- Install the device on DIN 35 rail placing the device’s upper recess on the top edge of the DIN rail. Fig. 1
- Push down the device until the device’s lower recess fits into the DIN rail. Fig.1
- Connect the device to the electrical system respecting max cable section and wiring diagram. Fig.2-3-4
CARTRIDGE REPLACEMENT
- Disconnect the power supply.
- Press the top and bottom ends of the cartridge to be replaced and pull it out of the device. Fig.5
- Install new cartridge. Fig.6
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