Kumwell KZ23.PK* is a single-phase surge arrester class III with a high-frequency filter according to IEC 61643-11. They are produced for nominal current within the range of 8, 16, 25, 32A for application use in TNS systems. The types KZ23.PK*.UN230 and KZ23.PK*.UN230.DS are constructed for mounting on DIN rail 35mm. KZ23.PK*.UN230 and KZ23.PK*.UN230.DS are designed for protection of single-phase electronic appliances in L.V. supply systems against impulse surge and high frequency disturbance.
The types KZ23.PK*.UN230 are fitted with a green LED diode signalizing the right functioning, types KZ23.PK*.UN230.DS indicate the failure by target disconnection of mechanical thermal fuses.
KZ23.PK Series | |||||
Technical Data | KZ23.PK8-UN230.ds | KZ23.PK16-UN230.ds | KZ23.PK25-UN230.ds | KZ23.PK32-UN230.ds | |
Nominal Voltage | UN | 230 V AC | |||
Max. continuous operating voltage | UC | 275 V AC | |||
Nominal current | 8 A | 16 A | 25 A | 32 A | |
Nominal discharge current (8/20) | In | 3 kA (L/N, L/PE) | |||
5 kA (N/PE) | |||||
Combined impulse | Uoc | 6 kV (L/N, L/PE) | |||
10 kV (N/PE) | |||||
Voltage Protection level at Uoc | UP | < 850 V (L/N) | |||
< 1.5 kV (L/PE) | |||||
< 1.2 kV (N/PE) | |||||
Asymmetrical attenuation of filter | min. 80 dB at 4MHz | ||||
(band-stop filter) | min. 40 dB (0.15-30 MHz) | ||||
Filters constants | Cx | 150 nF` | 220 nF | 220 nF | 220 nF |
Cy | 22 nF | ||||
L | 1.2 mH | 1.8 mH | 2.3 mH | 2.3 mH | |
Power loss at winding temp. 20°C | < 2.2 W | < 3.5 W | < 3.5 W | < 4 W | |
Response time | tA | < 25 ns (L/N) | |||
< 100 ns (L/PE, N/PE) | |||||
Recommended backup fuse | 6 A | 16 A | 25 A | 32 A |