MCDGV4 Generator Protection Device

Product detail

Product code:
MCDGV4
Price
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Product Information

Download Area

Available options

Documentation (Brochures & Manuals)

Operating Software Smart view: Documentation & Setup

Application

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

MCDGV4 Functional Overview

Approvals

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)

TÜV Nord, VDE-AR-N 4110 (2018-11), VDE-AR-N 4120 (2018-11)

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”

Key Benefits of the HighPROTEC MCDGV4

  • 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

  • Menu Languages supported: English, German, Spanish, Portuguese, French, Russian, Polish, Romanian


Application

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)

Inputs and Outputs
Analog inputs 0 (2)
Analog outputs 0 (2)
Binary inputs 8 (24)
Current transformer inputs 8
Output relays 10 (15)
Voltage transformer inputs 4
Watchdog relay 1
Protection ANSI
Voltage protection 27/59
Time overcurrent protection 50/51
Inrush stabilisation (2nd harmonic)
Directional time overcurrent protection 67
Earth fault protection 50N/51N
Sensitive EF isolated/compensated 50Ns/51Ns (Option)
Resistance earthed / solidly earthed 50N/51N
Earth fault directional feature 67N
Thermal replica 49
Circuit breaker failure protection 50BF
Residual voltage 59N
Phase balance 47
Frequency protection 810/81U
Frequency gradient 81
Vector surge / mains decoupling 78V
Power direction 32/37
Exciter current protection 40/76
Negative sequence protection 46
Field failure protection 40
Differential protection: Transformer 87T
Differential protection: Generator 87G
Differential protection: Restricted earth fault 87N
Out of Step Tripping 78
Power Swing Blocking 68
Q->&V< QV
Supervision ANSI
Current transformer supervision 60L
Voltage transformer supervision 60FL
Trip circuit resp. control circuit supervision 74TC
Additional Features
Control and detection of switchgears
Control and supervision of a circuit breaker
Disturbance recorder
Event recorder
Fault recorder (none volatile)
Parameter sets 4
Programmable Logic
Communication
DNP3 RTU (Option)
DNP3 TCP (Option)
IEC 60870-5-103 (Option)
IEC 60870-5-104 (Option)
IEC 61850 (Option)
IRIG-B00X
Modbus (TCP) (Option)
Modbus RTU (Option)
Profibus DP (Option)
Mounting Type
Housing suitable for 19” rack mounting (Option)
Housing suitable for door mounting

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