Page 82 - Current & voltage sensors catalog

VS50B ... VS1500B railway voltage sensors
For rolling stock and infrastructure

Technical data

Utilisation
Electronic sensors to measure DC, AC or pulsating
voltages with insulation between primary and
secondary circuits.

3

VS50B VS125B VS250B VS500B
Nominal primary voltage V r.m.s. 50 125 250 500
Measuring range @ ±12 V (±5%) / 1 min/h V peak ±75 ±187.5 ±375 ±750
Measuring range @ ±24 V (±5%) / 1 min/h V peak ±75 ±187.5 ±375 ±750
Not measurable overload 1 sec/hour V peak 150 375 750 1500
Max. measuring resistance @ U PMAX & ±12 V (±5%) Ω 67 67 67 67
Max. measuring resistance @ U PMAX & ±24 V (±5%) Ω 188 188 188 188
Min. measuring resistance @ U PN & ±24 V (±5%) Ω 0 0 0 0
Secondary current at U PN mA 50 50 50 50
Accuracy at U PN @ +25 °C % ≤±0.9 ≤±0.9 ≤±0.9 ≤±0.9
-25 … +70 °C % ≤±1.5 ≤±1.5 ≤±1.5 ≤±1.5
Accuracy at U PN
Accuracy at U PN -40 … +85 °C % ≤±1.7 ≤±1.7 ≤±1.7 ≤±1.7
Offset current @ +25 °C & ±24 V (±5%) mA ≤±0.15 ≤±0.15 ≤±0.15 ≤±0.15
Linearity 0.1U PN … 1.5U PN % ≤0.3 ≤0.3 ≤0.3 ≤0.3
Delay time μs ≤10 ≤10 ≤10 ≤10
dv/dt correctly followed V / μs ≤0.6 ≤1.5 ≤3 ≤6
Bandwidth -3 dB & R M = 50 Ω kHz ≤13 ≤13 ≤13 ≤13
Max. no-load consumption current @ ±24 V (±5%) mA ≤50 ≤50 ≤50 ≤50
Dielectric strength 50 Hz, 1 min kV 3.3 3.3 3.3 3.3
Primary/(Secondary+Screen)
Dielectric strength Secondary/Screen 50 Hz, 1 min kV 0.5 0.5 0.5 0.5
Partial discharges : @10pC, 50 Hz kV ≥1.1 ≥1.1 ≥1.1 ≥1.1
extinction voltage
Supply voltage ±5% V DC ±12 … ±24 ±12 … ±24 ±12 … ±24 ±12 … ±24
Mass kg 0.330 0.330 0.330 0.330
Operating temperature °C -40 … +85 -40 … +85 -40 … +85 -40 … +85
Storage temperature °C -50 … +90 -50 … +90 -50 … +90 -50 … +90

Max. common mode voltage General data
The following two conditions must be continuously – Coated electronic circuit.
and simultaneously respected: – Plastic case and insulating resin are self-extinguishing.
– Direction of the current: A positive primary differential voltage
1) U HT+ + U HT- ≤ 4.2 kV peak
(U HT+ - U HT- > 0) results in a positive secondary output current
and from terminal M.
– Protections:
2) | U HT+ - U HT- | ≤ U PMAX
- of the measuring circuit against short-circuits.
- of the measuring circuit against opening.
- of the power supply against polarity reversal.
– Burn-in test in accordance with FPTC 404304 cycle.
– Tightening torque for M5 terminal studs (N.m): 2 N.m.

80 | ABB