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CT25-T

LEM
Part Number CT25-T
Manufacturer LEM
Description Current Transducers
Published Mar 24, 2005
Detailed Description Current Transducer CT 5 .. 25-T For very accurate measurements of currents : DC, AC, pulsed..., with a galvanic isolatio...
Datasheet PDF File CT25-T PDF File

CT25-T
CT25-T

Overview
Current Transducer CT 5 .
.
25-T For very accurate measurements of currents : DC, AC, pulsed.
.
.
, with a galvanic isolation between the primary circuit (high power) and the secondary circuit (electronic circuit).
IPN = 5 .
.
25 A 0632 Electrical data Primary nominal current I PN (A r.
m.
s.
) 5 10 25 Primary current, measuring range I P (A) 7.
5 15 37.
5 Conversion ratio K N (A/V) 5 A/5 V 10 A/ 5 V 25 A/5 V CT 5-T CT 10-T CT 25-T Type Features • Closed loop (compensated) current transducer • Insulated plastic case recognized according to UL 94-V0 • Patent pending.
V Ω nF s V mA VO U T RL CL tC VC IC Analog output voltage Load resistance Capacitance loading Output short-circuit duration 1) Supply voltage (± 5 %) Current consumption 5 > 500 ≤5 Advanced features • f = 500 kHz • X G = ± 0.
1 % (- 25°C .
.
+ 70°C).
∞ ± 15 30 + VOUT / RL Advantages • • • • • • • Excellent accuracy Very good linearity Low temperature drift Optimized response time Wide frequency bandwidth No insertion losses High immunity to external interference • Current overload capability.
Accuracy - Dynamic performance data XG VO f tr Overall accuracy @ I PN Offset voltage @ I P = 0 - 25°C .
.
+ 70°C TA = 25°C - 25°C .
.
+ 70°C ± 0.
1 Max ± 0.
4 ± 0.
6 DC .
.
500 <1 % mV mV kHz µs Frequency bandwidth (- 3 dB) @ 10 % of I PN Response time Applications • AC variable speed drives and servo General data TA TS m Ambient operating temperature Ambient storage temperature Mass Standards - 25 .
.
+ 70 °C - 40 .
.
+ 85 °C 670 g EN 50178 : 1996 motor drives • Static converters for DC motor drives • Battery supplied applications • Uninterruptible Power Supplies • Switched Mode Power Supplies (SMPS) (UPS) • Power supplies for welding applications.
Note : 1) If the short-circuit has a duration more than 1 s, the primary current of the supply voltage must be interrupted for a short time to restore the transducer to proper working order.
The internal protection is done by PTC resistors.
Application domain • Indu...


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