DEHNventil ZP TT 255

                                         
DEHNventil ZP TT   Dimension drawing DEHNventil ZP TT 255  Basic circuit diagram DEHNventil ZP TT 255

DEHNventil ZP TT 255: Combined lightning current and surge arrester for TT and TN-S systems for use in primary power supply systems (3+1 circuit)

	DV ZP TT 255
SPD according to EN 61643-11	Type 1
SPD according to IEC 61643-1	Class I
Energy-coordinated protection effect with regard to the terminal equipment	Type 1 + Type 2
Energy-coordinated protection effect with regard to the terminal equipment (≤ 5m)	Type 1 + Type 2 + Type 3
Nominal a.c. voltage     [UN]	230 / 400 V
Max. continuous operating a.c. voltage     [UC]	255 V
Lightning impulse current (10/350 µs) [L1+L2+L3+N-PE]     [Iimp]	100 kA
Lightning impulse current (10/350 µs) [L-N]     [Iimp]	25 kA
Lightning impulse current (10/350 µs) [N-PE]     [Iimp]	100 kA
Nominal discharge current (8/20 µs)     [In]	25 / 100 kA
Voltage protection level [L-N]     [UP]	≤ 1.5 kV
Voltage protection level [N-PE]     [UP]	≤ 1.5 kV
Follow current extinguishing capability [L-N] a.c.     [Ifi]	25 kArms
Follow current extinguishing capability [N-PE] a.c.     [Ifi]	100 Arms
Follow current limitation/Selectivity	no tripping of a 32 A gL/gG fuse up to 25 kArms (prosp.)
Response time     [tA]	≤ 100 ns
Max. backup fuse up to I = 25 kArms	315 A gL/gG
Max. backup fuse for IK > 25 kArms	200 A gL/gG
Temporary overvoltage (TOV) [L-N]     [UT]	335 V / 5 sec.
Temporary overvoltage (TOV) [N-PE]     [UT]	1200 V / 200 ms
Operating temperature range     [TU]	-40°C...+80°C
Function control	button with light indicator
Cross-sectional area (PE, )	10-35 mm2 flexible/50 mm2 stranded
For mounting on	40 mm busbar system
Enclosure material	red thermoplastic, UL 94 V-0
Degree of protection	IP 20
Dimension	3 mods., DIN 4
Certifications, Approvals	VDE
PU	1 pcs.
ordering information
Type	DV ZP TT 255
Part No.	900 391