LV25P LEM, LV25P Datasheet - Page 2

• Manufacturer Part Number: LV25P
• Description: VOLTAGE TRANSDUCER
• Manufacturer: LEM

Dimensions LV 25-P
Mechanical characteristics
Instructions for use of the voltage transducer model LV 25-P
Primary resistor R
calculated so that the nominal voltage to be measured corresponds to a primary current of 10 mA.
Example: Voltage to be measured V
Operating range (recommended) : taking into account the resistance of the primary windings (which must remain low compared to R
to keep thermal deviation as low as possible) and the isolation, this transducer is suitable for measuring nominal voltages from 10 to 500 V.
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without previous notice.
Bottom view
Back view
General tolerance
Fastening & connection of primary
Fastening & connection of secondary 3 pins
Recommended PCB hole
1
: the transducer’ s optimum accuracy is obtained at the nominal primary current. As far as possible, R
(in mm. 1 mm = 0.0394 inch)
PN
= 250 V
± 0.2 mm
2 pins
0.635 x 0.635 mm
1.2 mm
a) R
b) R
1 mm
1
1
= 25 k / 2.5 W, I
= 50 k / 1.25 W, I
Right view
Remarks
I
This is a standard model. For different versions (supply
voltages, turns ratios, unidirectional measurements...),
please contact us.
S
is positive when V
P
P
= 10 mA
= 5 mA
Secondary terminals
Terminal + : supply voltage + 12 .. 15 V
Terminal M : measure
Terminal - : supply voltage - 12 .. 15 V
Connection
Accuracy = ± 0.8 % of V
Accuracy = ± 1.6 % of V
P
is applied on terminal +HT.
Standard 00
or N° SP..
PN
PN
1
(@ T
(@ T
should be
Top view
Year Week
A
A
swiss
made
= + 25°C)
= + 25°C)
1,
in order