Datasheet ND20LITE

Product catalog summary

Overview: The ND20LITE is a meter designed for measuring network parameters in 2, 3, or 4-wire balanced and unbalanced systems. It features high accuracy, a backlit LCD screen, and IP65 protection from the front. It supports digital transmission via RS-485 interface using MODBUS protocol.

Specifications:

Current measurement ranges from 0.002 to 6.000 A with a basic error of ±0.2%.
Voltage measurement ranges for L-N and L-L with basic errors of ±0.2% and ±0.5% respectively.
Frequency range is 47.0 to 63.0 Hz with a basic error of ±0.2%.
Power measurements include active, reactive, and apparent power with a basic error of ±0.5%.
Energy measurements for imported and exported active energy, reactive inductive and capacitive energy with a basic error of ±0.5%.
THD measurement range is 0 to 100% with a basic error of ±5%.

Features:

Configurable alarm and pulse outputs for energy.
RS-485 interface with MODBUS RTU protocol supporting various baud rates.
Relay and pulse outputs for active or reactive energy.
LCD screen with backlight for clear visibility.

Operating Conditions:

Supply voltage ranges from 85 to 253 V AC and 90 to 300 V DC.
Operating temperature ranges from -25°C to 55°C.
Relative humidity tolerance is 25% to 95% without condensation.
Short duration overload capacity for voltage and current inputs.

Safety and Compatibility:

Electromagnetic compatibility according to EN 61000 standards.
Installation category III and pollution level 2.
Maximum phase-to-earth voltage for supply and measuring circuits is 300V.

Ordering Information: The ND20LITE can be customized based on current input, voltage input, supply voltage, language, and acceptance tests. An example order code is provided for reference.

Additional Information: The document includes connection diagrams and mentions the availability of a free eCon program for programming LUMEL's products.

Catalog excerpts

ND20LITE METER OF NETWORK PARAMETERS • Measurement of power network parameters in 2,3 or 4- wire balanced and unbalanced systems. • High accuracy class. • Indications considering values of programmed ratios. • THD. • Backlit LCD 3.5"screen. • Protection grade from the frontal side: IP65. • Digital transmission to the master system through the RS-485 interface (MODBUS). • Configurable alarm and pulse outputs (energy). • Configuration of displayed pages. Measurements, monitoring, recording of network parameters and energy. GALVANIC ISOLATION * Depending on the set tr_U ratio (ratio ofthe voltage transformer: 0.1...4000.0) and tr_I ratio (ratio of the current transformer: 1...10000) r - of the range mv - of the measured value

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ND20LITE - METER OF NETWORK PARAMETERS outputs ditei3>LUMlL Relay output programmable relay output, normally open voltageless contacts, 250 V~/0.5 A~ Pulse output of active or reactive energy Connections: - direct, semi-indirect and indirect one-phase measurement, - direct measurement in a 3-wire network, - semi-indirect measurement in a 3-wire network, - indirect measurement with the use of 3 current transformers and 2 or 3 voltage transformers in a 3-wire network, - direct measurement in a 4-wire network, - semi-indirect measurement in a 4-wire network, - indirect measurement with the use of...

Open the catalog to page 2

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.

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