DVM Family

Voltage sensors for Industrial and Traction - for high and medium voltage measurements.

DVM - Voltage Sensors

The DVM product family comprises a compact range of voltage sensors designed for high and medium voltage measurements in industrial and traction applications. These sensors are crafted for the electronic measurement of voltages, including DC, AC, and pulsed voltages, with galvanic separation between the primary and secondary circuits.

Specifically tailored for medium and high voltage measurements ranging from 600 to 4200 VRMS, the DVM voltage sensors feature a unique compact design and deliver exceptional overall accuracy.

Powered by our patented insulation digital technology, the DVM components seamlessly blend low consumption, very high accuracy, and minimal temperature drift.

Within the DVM family, various voltage sensors cater to specific needs, including DVM, DVM-B, and DVM-UI, each with its own set of features.

Products

DVM – Features and benefits

Features

Bipolar and insulated measurement of voltage
Current output for DVM parts, Voltage output for DVM-B sensors
Primary input and output connections with M5 studs or threaded inserts
Compatible with LV 100 family
Built-in device.

The DVM-B voltage sensors feature input connections with M5 studs and output connections with M5 threaded inserts.

In contrast, the DVM-UI electronic components come with their own set of features:

Unipolar and insulated measurement from 0 to UP N
4-20 mA instantaneous output
Unipolar power supply
Primary input and output connections with M5 studs.

Main characteristics

Compact design (30% smaller, 25% less volume)
A unique design to cover all measuring voltage ranges 600 to 4200 VRMS
High level of insulation test voltage: 12 KVRMS / 50 Hz / 1 min
High level of RMS voltage (5 kV) for partial discharges extinction @10 pC
Excellent overall accuracy:
- +/- 0.5% of Vpn at + 25°C
- +/- 1% of Vpn over the operating temperature range
High bandwidth (short response time): 13 KHz (-3 dB) (50 µs)
Low consumption and low losses
Very low sensitivity to common mode voltage variations
Fast delay time
Low temperature drift
High immunity to external interferences.

Typical applications of the DVM Series

DVM sensors are commonly used in both railway settings (including fixed installations and onboard trains) and industrial applications. It is typical to find DVM sensors in the following applications:

AC variable speed and servo motor drives
Static converters for DC motor drives
Battery supplied applications
Uninterruptible Power Supplies (UPS)
Switched Mode Power Supplies (SMPS)
Power supplies for welding applications
Renewable Energy (Solar and Wind)
Single or three phase inverters
Propulsion and braking choppers
Propulsion converters
Auxiliary converters
High power drives
Substations

The DVM-UI components are specifically designed for particular application fields, showcasing optimal performance in substations and trackside applications.

LEM DVM – Download & Technical Characteristic

Product	Document	Primary nominal RMS voltage	Supply Voltage range	Op. Temperature
DVM 600	Datasheet 3D	600 V	12 to 24	-40 to 85°C
DVM 1000	Datasheet 3D	1000 V	12 to 24	-40 to 85 °C
DVM 2000	Datasheet 3D	2000 V	12 to 24	-40 to 85 °C
DVM 2000-B	Datasheet 3D	2000 V	15 to 24	-40 to 85 °C
DVM 2000-UI	Datasheet 3D	2000 V	15 to 24	-40 to 85°C
DVM 3000	Datasheet 3D	3000 V	12 to 24	-40 to 85°C
DVM 3600	Datasheet 3D	3600 V	12 to 24	-40 to 85 °C
DVM 4000	Datasheet 3D	4000 V	12 to 24	-40 to 85 °C
DVM 4000-B	Datasheet 3D	4000 V	15 to 24	-40 to 85 °C
DVM 4000-DT/SP1	Datasheet 3D	4000 V	24 to 24	-40 to 70°C
DVM 4000-UI	Datasheet 3D	4000 V	15 to 24	-40 to 85 °C
DVM 4200	Datasheet 3D	4200 V	12 to 24	-40 to 85 °C

DVM Sensors – ASK FOR SAMPLES / QUOTATIONS

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