SCG-250-075-R01

SCG-250-075-R01

Describe first line
VLD class 1, type VLD-F
Product description
  • the VLD is used to restrict excessive high contact voltages arising on exposed conductive parts of a railway equipment in case of a disturbance (short-circuit) in AC and DC railway electric traction systems, thus ensuring protection to persons that may come into contact with the parts mentioned
  • in the event of a failure connection between a live power supply part of the traction system and an exposed conductive part (e.g. due to the overhead power line fall) the VLD protects the parts affected by causing conductive itself, which results in turning off of the power supply
  • the SCG is connected between the protected part and the return circuit
  • in case of an overload caused by caused by short-circuit or long-term withstand current the internal patented (PV CZ2017248) short-circuiting device intervenes by establishing a permanent short circuit across the protective element
  • the integrated protective element effectively eliminates high impulse overvoltage induced into the traction mains or railway equipment by a lightning strike
  • easy mounting, installation right away on the protected equipment
Ordering number
A06153
Dimension drawing
Basic circuit diagram
Technical specifications
Type VLD according to EN 50122-1
F
Class VLD according to EN 50526-2
1
Rated current (@ 60 min)
Ir
250
A
Short time withstand current (@ 60 ms)
Iw
1,0
kA
Short-circuit current (@ 300 ms)
ISCC
5,0
kA
Nominal triggering DC voltage*
UTn
75
V
Non-triggering voltage
Uw
45,00
V
Response time
ta
10 000
ns
Instantaneous triggering voltage*
UTi
75,00
V
Leakage current at Uw
< 1 μA
Maximal residual voltage at Iw
URES
30,00
V
Maximal residual voltage at Ir
URES
15,00
V
Lightning current impulse (8/20)
Iimp-n
100,00
kA
High current impulse (8/20)
Iimp-high
100,00
kA
High charge impulse (10/350)
Iimp-hc
50,00
kA
Degree of protection
IP 67
Range of ambient temperatures - min
-40
°C
Range of ambient temperatures - max
70
°C
Weight
0,84
kg
According to standard
EN 50122-1, EN 50526-2
ETIM Class
EC002496
Customs tariff number
85363030
EAN
8595090561538
*in ionized mode

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