Voltage Transducer CV 3-1500
For the electronic measurement of voltages : DC, AC, pulsed...,
with a galvanic isolation between the primary circuit (high voltage)
and the secondary circuit (electronic circuit).
Electrical data
VPN Primary nominal r.m.s. voltage 1000 V
VPPrimary voltage, measuring range 0 .. ± 1500 V
VSSecondary analog voltage @ VP max 10 V
K N Conversion ratio 1500 V / 10 V
R L Load resistance ≥ 1 kΩ
C L Capacitive loading ≤ 5 nF
VCSupply voltage (± 5 %) ± 15 V
ICCurrent consumption 32 + VS / RLmA
VdR.m.s. voltage for AC isolation test, 50 Hz, 1 mn 6kV
VeR.m.s. voltage for partial discharge extinction @ 10 pC 2kV
Accuracy - Dynamic performance data
Typ Max
X G Overall accuracy @ VP max TA = 25°C ± 0.2 %
- 40°C .. + 85°C ± 0.6 %
VOOffset voltage @ VP = 0 TA = 25°C ± 5.0 mV
- 40°C .. + 85°C ± 13.0 mV
trResponse time 1) @ 90 % of VP max 0.4 µs
dv/dt dv/dt accurately followed 900 V/µs
fFrequency bandwidth (- 1 dB) @ 33 % of VPN DC .. 800 kHz
General data
TAAmbient operating temperature - 40 .. + 85 °C
TSAmbient storage temperature - 45 .. + 90 °C
PTotal primary power loss 2.8 W
R 1 Primary resistance 360 kΩ
mMass 560 g
Standards EN 50155
Note : 1) With a dv/dt of 900 V/µs
Features
•Closed loop (compensated) voltage
transducer
•Insulated plastic case recognized
according to UL 94-V0
•Patent pending.
Advantages
•Excellent accuracy
•Very good linearity
•Low thermal drift
•Low response time
•High bandwidth
•High immunity to external
interference
•Low disturbance in common mode.
Applications
•AC variable speed drives and servo
motor drives
•Static converters for DC motor drives
•Uninterruptible Power Supplies
(UPS)
•Power supplies for welding
applications
•Railway overhead line voltage
measurement.
VPN =1000 V
060809/8
LEM www.lem.com
0630
Front view
Top view
Left view
Mechanical characteristics
•General tolerance ± 0.3 mm
•Transducer fastening 3 holes ∅ 5.5 mm
3 M5 steel screws
Fastening torque max 4 Nm or 2.95 Lb. - Ft.
•Connection of primary M5 threaded studs
•Connection of secondary M5 threaded studs
•Fastening torque max 2.2 Nm or 1.62 Lb. -Ft.
Secondary terminals
Terminal +:supply voltage +15 V
Terminal M:measure
Terminal 0:0 V
Terminal -:supply voltage -15 V
Connection
Dimensions CV 3-1500 (in mm. 1 mm = 0.0394 inch)
Remarks
•VS is positive when VP is applied on terminal +HT.
•CEM tested with a shielded secondary cable.
Shield connected to 0 V at both ends, or disconnected.
•This is a standard model. For different versions (supply
voltages, turns ratios, unidirectional measurements...),
please contact us.
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without previous notice.
Red
Blue
