EVAR GBBR0 pages

EVAR
Line Analizer & Protection

Metering & Protection for Feeders,
Generators & Industry

DESCRIPTION
The EVAR relay has been designed for the continuous monitoring of electrical parameters in medium or lowvoltage 1-phase or 3-phase systems. It allows direct or remote monitoring of the system’s general conditions as it
immediately signals any fault. EVAR can also be used to control the production process thanks to the
programmable contacts suitable for various applications.

APPLICATIONS

DIGITAL MEASUREMENT

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4.

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Metering of distribution feeders, transformers,
generators, capacitor banks and motors.
Commercial & industrial utility.
Flexible control for demand load shedding, power
factor, etc.
Power quality analysis.

5.

PROTECTION AND FUNCTIONALITY
Configurable setpoints of:
• Phase Under & Over Current
• Ground overcurrent
• Phase Under & Over Voltage
• Phase sequence
• Current & Voltage Total harmonic distortion (THD)
• Under & Over frequency
• Positive & Negative Active power
• Positive & Negative Reactive power
• Voltage & current Unbalance
• Power factor (leading or lagging)
• Demand readings for:
- phase current....... (A)
- active power......... (kW)
- reactive power ..... (kvar)
- apparent power ... (kVA)

COMMUNICATION
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Remote communication using a PC or a PLC by 1
RS232 & 2 RS485 ports.
Remote programming of the setpoints.
Protocol used: Modbus RTU.

6.
7.
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True RMS Phase & Ground Current
True RMS Phase & Line voltage
Energy
Positive & negative Active power (kW) & Reactive
power (kvar)
Last & Maximum Demand readings for:
• phase current
(A)
• active power
(kW)
• reactive power
(kvar)
• apparent power
(kVA)
Frequency
(Hz)
Voltage & Current Unbalance.
th
Voltage & current harmonic analysis up to the 13
K value measurement.
Event recorder.

SIGNALLING AND PROGRAMMING
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LCD & LED display indication.
Indication and storage of fault conditions and their
values.
Indication on the system status:
- NORMAL
- CURRENT FAULT
- VOLTAGE FAULT
- UNBALANCE FAULT
- POWER FAULT
- POWER FACTOR FAULT
- DEMAND FAULT
- THD FAULT
- FREQUENCY FAULT

Protection relay
Quality certified ISO 9001:2000

EVAR_GBBR_050805