General Features Of 400 Series Relays - DEMA 400 Series User Manual

General Features of 400 Series Relays

• Auxiliary supply voltage compatibility with all voltages in the field: (24 – 240) Vac /
Vdc, operational range: (22 – 275) Vac / Vdc.
• Operational ambient temperature range: (-25 ... +85) ⁰C,
• Windows 32/64-bit based PC control software,
• Wide communication protocols support: IEC 61850 + GOOSE, IEC 60870-5-103,
DNP 3.0, MODBUS RTU and TCP,
• Wide IEC, ANSI and custom delay curve support, enabling selectivity setup with all
types of protection relays including electromechanical relays,
• 3-channel voltage inputs: (57 ... 130) VAC with continuous 260 VAC and 10 s – 300
VAC insulation withstand,
• 4-channel X/1 A and X/5 A current input with continuous 20 A and 1 s – 500 A
thermal withstand, DMT and IDMT delay curve support for all current & voltage
protection functions,
• Option for RMS or fundamental harmonics measurement method for various
protection functions
• Remote control and monitoring of the circuit breaker via dedicated menu with mimic
diagram,
• Annunciating functions and 8/10 optically coupled programmable digital inputs that
eliminate the need to use external annunciators (e.g. to evaluate Buchholz, temperature
and pressure signals), 8 programmable 8 A – 250 V outputs (4 SPDT + 4 SPST),
• Full screen multimeter display, measurement functions that eliminate the need to use
double core CTs and external meters,
• Built-in X/1 A and X/5 A current transformer compatibility,
• Super-capacitor fed real-time clock,
• 8 independent settings groups,
• 3-stage security password system,
• IP52 front side and IP20 backside environmental protection,
• Fast and low cost repairs thanks to the modular electronics,
• 3-year limited warranty, Matchless customer support, a variety of application schemas
and technical documents.
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