MCDGV4 Generator Protection Device (MCDGV4-2A0AAA)
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Prices incl. VAT plus shipping costs Please configure your device with the selection fields available below. You must select a value for each field and then you can submit a price request.
Configuration
The generator differential protection relay MCDGV4 is a high precision protection
for medium and high power generators. The step-up transformer can be integrated into
the protection zone (unit protection/ block protection). In addition to the phase
and earth differential protection, the device provides a variety of generator-specific
protection functions.
The “all-inclusive” package comprises also phase, earth current, voltage, frequency and power protection. In addition to that the device offers an undervoltage directional reactive power protection with reconnection function and an adjustable Fault Ride Through (FRT) with AR detection.
The intuitive operating concept with plausibility checks and extensive commissioning functions such as the built-in fault simulator allows a safe and time-optimized maintenance and commissioning. The parameter setting and evaluation software Smart view can be used consistently across the entire family of devices.
Functional Overview
Certifications
 | |
 | UL File Nr.: E217753 certified regarding UL508 (Industrial Controls) |
 | CSA File Nr.: 251990 certified regarding CSA-C22.2 No. 14 (Industrial Controls) |
 | EAC certified by EAC (Eurasian Conformity) |
 | KEMA Type tested (and certified) regarding IEC 60255‑1 and regarding IEC 61850 |
| Component certificate regarding the German grid code standard VDE-AR-N 4110 (2018-11) |
| Component certificate regarding the German grid code standard VDE-AR-N 4120 (2018-11) |
Complies with IEEE 1547‑2003
Amended by IEEE 1547a‑2014
Complies with ANSI C37.90‑2005
Complies with “Engineering Recommendation G99 Issue 1 Amendment 6 – March 2020”
Wide range power supply: 24 … 270 VDC / 48 … 230 VAC
VT measurement from 0 V up to 800 VAC (300 VAC for some order options)
CT measurement always with 1 A and 5 A
Plausibility verification intelligence
Optimized functional overview by hiding unused functions, parameter and assignments
On-board testing without removing the wiring
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Protection of electrical (HV, MV) synchronous generators against:
Thermal damage due to overload/short circuit
Inadvertent energization
Managing Overload by Load shedding by ROCOF, Underfrequency,…
Severe Out of Step damages
Underexcitation damages
Stator Earth Fault / insulation damages
Rotor Earth fault detection
Insulation damage due to overvoltage
Insulation damage detection by differential current principle
Overfluxing (Step-up-Transformer)
Reverse Power (indicating outage of the prime mover)
Overfrequency, Underfrequency (over-/underspeed)
Vector surge protection against asynchrounous coming back of grid voltage after power outage (e.g. caused by auto reclosure)