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LEM |
Voltage Transducer CV 3-2000
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).
VPN = 1400 V
Electrical data
VPN Primary nominal r.m.s. voltage
1400
V
V Primary voltage, measuring range
P
0 .. ± 2000
V
VS Secondary analog voltage @ VP max
10 V
K Conversion ratio
N
2000 V / 10 V
R L Load resistance
≥ 1 kΩ
C Capacitive loading
L
≤ 5 nF
VC Supply voltage (± 5 %)
± 15
V
I Current consumption
C
32 + V / R mA
SL
Vd R.m.s. voltage for AC isolation test, 50 Hz, 1 mn
6
kV
V R.m.s. voltage for partial discharge extinction @ 10 pC 2
e
kV
Accuracy - Dynamic performance data
X Overall accuracy @ V
G P max
V Offset voltage @ V = 0
OP
T = 25°C
A
- 40°C .. + 85°C
T = 25°C
A
- 40°C .. + 85°C
t Response time 1) @ 90 % of V
r P max
dv/dt dv/dt accurately followed
f Frequency bandwidth (- 1 dB) @ 25 % of V
PN
General data
Typ Max
± 0.2 %
± 0.6 %
± 5.0 mV
± 13.0 mV
0.4
900
DC .. 300
µs
V/µs
kHz
TA Ambient operating temperature
TS Ambient storage temperature
P Total primary power loss
R Primary resistance
1
m Mass
Standards 2)
- 40 .. + 85
- 45 .. + 90
3.1
640
560
EN 50155
°C
°C
W
kΩ
g
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.
Notes : 1) With a dv/dt of 900 V/µs
2) A list of corresponding tests is available
LEM Components
030129/8
www.lem.com
Dimensions CV 3-2000 (in mm. 1 mm = 0.0394 inch)
Front view
Left view
Secondary terminals
Terminal + : supply voltage + 15 V
Terminal M : measure
Terminal 0 : 0 V
Terminal - : supply voltage - 15 V
Top view
Connection
Red
Blue
Mechanical characteristics
• General tolerance
• Transducer fastening
Fastening torque max
• Connection of primary
• Connection of secondary
• Fastening torque max
± 0.3 mm
3 holes ∅ 5.5 mm
3 M5 steel screws
4 Nm or 2.95 Lb. - Ft.
M5 threaded studs
M5 threaded studs
2.2 Nm or 1.62 Lb. -Ft.
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.
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