Power Supply Systems Class I/II Combined Arresters ... - Sinetech

Power Supply Systems
Class I/II Combined Arresters
DEHNventil ® VGA 280
Combined arrester
VGA 280/4
Lightning current/surge arrester for integrating power supply lines into the lightning
protection equipotential bonding system in one position as stand-alone-application.
German patent.
For protecting low-voltage installations against surges, also in case of direct lightning
strikes (in overvoltage category IV + III in accordance with DIN VDE 0110-1:1997-04).
Tested with test current (8/80) in accordance with E DIN VDE 0675-6:1989-11.
Class I/II arrester in accordance with E DIN VDE 0675-6:1989-11.
– tandem-arranged zinc oxide varistors (with supervisory device) and gliding spark
gaps with "breakwater function"
– supervisory device (with disconnector) for varistors and fault indication via built-in
lamp, connection facility for remote alarm (built-in break/normally closed contact)
– functional test button
– lamp indicating operation (approx. 100 V) for VGA 280/2 and 130 V for VGA 280/4
between L1/ connections
Dimensional drawing of VGA 280
Versions:
VGA 280/4:
VGA 280/2:
4-pole for three-phase systems
2-pole for single-phase systems
See Installation Instructions No. 1000 for further information on use.
117 (6.5 modules)
DEHNventil ® VGA 280
Type Version Article No.
VGA 280/4 4-pole 900 304
VGA 280/2 2-pole 900 302
VGA 280/4/Is
DEHNventil ® VGA 280/4/Is in insulated enclosure
Degree of protection IP 54 provided by insulated enclosure, tested with lightning current,
with transparent lid, sealable,
with two cable entries and strangle nipple for Ø 16 ... 32 mm cables,
grey enclosure, for indoor systems.
Type Dimensions Article No.
VGA 280/4/Is 235 x 300 x 130 mm 900 305

Power Supply Systems
Class I/II Combined Arrester
Technical Data:
Basic circuit diagram of VGA 280
DEHNventil VGA 280/4 VGA 280/2
tested to E DIN VDE 0675-6:1989-11
rated voltage (maximum
continuous operating voltage)
U c
280 V / 50 Hz
nominal discharge current (8/20) i sn 5 kA
maximum discharge current (8/20) I max 100 kA
lightning impulse current (8/80)
voltage protection level
residual voltage at i sn
lightn. imp. sparkover volt. 1.2/50
U p
100 kA
≤ 2.5 kV
≤ 4 kV
response time t A ≤ 25 ns
backup fuse (only required if
not already provided in
mains)
short-circuit withstand capability
with max. backup fuse
100 A gL/gG
25 kA / 50 Hz
operating temperature range ϑ – 40° C ... + 80° C
cross-sectional areas L1, L2, L3, N: min. 6 mm² single-stranded /
4 mm² fine-stranded (only
with connector sleeve)
max. 50 mm² multi-stranded /
35 mm² fine-stranded
: min. 10 mm² single-stranded /
10 mm² fine-stranded (only
with connector sleeve)
max. 50 mm² multi-stranded /
35 mm² fine-stranded
mounting on 35 mm DIN-rail in accordance with EN 50022
enclosure material red glass fibre reinforced thermoplastic
degree of protection IP 20
installation width 6.5 modules, DIN 43880
connections L1, L2, L3, N L1, N
approval
remote alarm contacts
type
MEEI
break/normally closed
contact rating U N /I N AC: 250 V / 0.5 A
DC: 250 V / 0.1 A
125 V / 0.2 A
75 V / 0.5 A
cross-sectional areas
remote alarm terminals
max. 2.5 mm² single-stranded/1.5 mm² fine-stranded