Product information
The current transformer LT500S made by the manufacturer LEM can be completely replaced in terms of dimensions, function and connection through the redesign VEW LT500S RED.
The housing is made of polyamide for railway requirements, conforms to EN50155 and UL94-V0 and fulfills the fire protection class for railway standards.
The current transformer VEW LT500S RED is suitable for the galvanically isolated measurement of DC, AC and pulse currents in the range of 0 ... 500A and up to 0 ... ± 1200A.
The measuring range depends on the supply voltage and the secondary resistance stood RM of the measuring circle.
RM = "measuring resistance"
Supply RM
±15V measuring range ± 500Amax 0...30Ω
±15V measuring range ± 900Amax 0... 8Ω
±24V measuring range ± 500Amax 10...60Ω
±24V measuring range ±1200Amax 10...17Ω
The transfer ratio KN is 1: 2000.
The primary / secondary insulation voltage is> 6kV.
Samples available from stock.
Technical Data
| Supply | ±15V DC... ±24V DC |
| Measuring range | DC, AC, puls peak 0...±500A, up to 0...±1200A |
| Bushing | Ø27mm, center hole 38mm above mounting plate |
| Circuit points | 3x M5 bolt ±15...24V, M |
| RM | 0...30Ω to ±500A ±15V, 10...17Ω to ±24V ±1200A |
| Accuracy | XG <± 0,5% (TA 25°C) |
| Lineary error | <0,1% |
| Rate of current rise di/dt | >100A/µs |
| Bandwidth | DC...100kHz - 1db |
| Ambient temperature | -40...+85°C |
| Standards | EN50155: 2007; EN50121-3-2:2006 |
| Housing | UL94-VO, polyamide, tecamid |
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