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HSA-275/2+1 S IT
Article number: 27 573- Surge arresters type T2 ensure the equipotential bonding and reduce switching, induced and residual overvoltage in single-phase and three-phase IT power supply systems.
- The products consist of varistors with big discharge ability with gas discharge tube, which ensures zero leakage current in the PE conductor.
- Installed at the boundaries of zones LPZ 1 – LPZ 2 into subsiduary switchboards and control panels.
- S indication specifies a version with remote monitoring.
| Test class according to EN 61643-11:2012 (IEC 61643-11:2011) | T2 | |
| System | IT | |
| Number of poles | 3 | |
| Nominal line voltage | UN | 230 V |
| Maximum continuous operating voltage AC | UC | 275 V |
| Maximum discharge current (8/20) L/CP | Imax | 50 kA |
| Nominal discharge current for class II test (8/20) L/CP | In | 20 kA |
| Open circuit voltage of the combination wave generator | UOC | 6 kV |
| Total discharge current (8/20) L1+L2+CP->PE | ITotal | 50 kA |
| Voltage protection level at In (CP/PE) | Up | < 1.5 kV |
| Voltage protection level at In (L/CP) | Up | < 1.2 kV |
| Voltage protection level at UOC (L/CP) | Up | < 0.8 kV |
| Temporary overvoltage test (TOV) for tT = 5 s (L/CP) | UT | 337 V |
| Temporary overvoltage test (TOV) for tT = 0.2 s (L/PE) | UT | 1 455 V |
| Response time (L/CP) | tA | < 25 ns |
| Response time (CP/PE) | tA | < 100 ns |
| Maximal back-up fuse | 160 A gL/gG | |
| Short-circuit current rating at maximum back-up fuse | ISCCR | 60 kArms |
| Lightning protection zone | LPZ 1-2, LPZ 2-3 | |
| Housing material | Polyamid PA6, UL94 V-0 | |
| Degree of protection | IP20 | |
| Operating temperature | ϑ | - 40 ÷ 70 °C |
| Minimum cross-section of connected Cu conductors accord. to HD 60364-5-53:2022 (doesn't apply to „V“ connection) for T2 | S |
2.5 mm² (L, N) 6 mm² (PE, PEN) |
| Clamp fastening range (solid conductor) | 1.5 ÷ 25 mm2 | |
| Clamp fastening range (stranded conductor) | 1.5 ÷ 16 mm2 | |
| Tightening moment | 3 | |
| Installation | On DIN rail 35 mm | |
| Modular width | 3 | |
| Operating position | Any | |
| Signalling at the device | Optic | |
| Importance of local signaling |
OK – clear target FAULT – red target |
|
| Remote signalling | Yes | |
| Potential free signal contact (S) (recommended cross-section of remote monitoring max. 1 mm2) | AC: 250 V / 1.5 A, DC: 250 V / 0.1 A | |
| Modular design | No | |
| Lifetime | > 100 000 h |