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Supplement MRU4-3.6-EN-G99
MRU4‑2xxxxx+G
Voltage Protection
G99-Type-Tested Variant
Version: 3.6.g (Build 48004)
Original document ‧ English
© 2020

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Summary of Contents for Woodward HighPROTEC MRU4-2 G Series

  • Page 1 Supplement MRU4-3.6-EN-G99 MRU4‑2xxxxx+G Voltage Protection G99-Type-Tested Variant Version: 3.6.g (Build 48004) Original document ‧ English © 2020...
  • Page 2 Krefelder Weg 47 ∙ D–47906 Kempen (Germany) Postfach 10 07 55 (P.O.Box) ∙ D–47884 Kempen (Germany) Telephone: +49 (0) 21 52 145 1   Internet: www.woodward.com   Sales Telephone: +49 (0) 21 52 145 331 Fax: +49 (0) 21 52 145 354 Email: SalesPGD_EMEA@woodward.com   Service Telephone: +49 (0) 21 52 145 614 Fax: +49 (0) 21 52 145 354 Email: industrial.support@woodward.com © 2020 Woodward Kempen GmbH MRU4 MRU4-3.6-EN-G99...
  • Page 3: Table Of Contents

    Table of Contents Table of Contents Introduction ..............4█...
  • Page 4: Introduction

    1 Introduction Introduction Woodward offers a special G99-type-tested variant of the MRU4. It has some protection settings fixed or restricted to the value ranges that are specified and required in the Engineering Recommendation G99 (Issue 1 Amendment 6). If you need this MRU4 variant make sure to use the order code MRU4‑2xxxxx+G (with a trailing “+G”) when you place your order.
  • Page 5: G99-Specific Protection Settings

    2 G99-Specific Protection Settings G99-Specific Protection Settings In general, all protection functions that are required for an Interface Protection device by the EREC G99‑1‑6 are enabled in the [Device planning] menu. All other protection functions are disabled by default, but can be enabled. Besides this, only the protection functions that are needed for Types A, B and C protection are set to “active”...
  • Page 6: 1]: Voltage Protection Pre-Configured According To The Lv Requirements

    2 G99-Specific Protection Settings 2.1.1 V[1]: Voltage Protection Pre-Configured According to the LV Requirements 2.1.1 V[1]: Voltage Protection Pre-Configured According to the LV Requirements V[1] . Mode [Device planning] V< Voltage protection instance number 1: Pre-configured as undervoltage protection for LV connections. For the password-protection (of access level “S.3”), see the “Security”...
  • Page 7 2 G99-Specific Protection Settings 2.1.1 V[1]: Voltage Protection Pre-Configured According to the LV Requirements V[1] . V< [Protection Para / Set 1…4 / V-Prot / V[1]] If the pickup value is exceeded, the module is started. • Set 1: 0.80 Vn The definition of Vn is dependent on both the Field Parameter »VT con«...
  • Page 8: 2]: Voltage Protection Pre-Configured According To The Lv Requirements

    2 G99-Specific Protection Settings 2.1.2 V[2]: Voltage Protection Pre-Configured According to the LV Requirements 2.1.2 V[2]: Voltage Protection Pre-Configured According to the LV Requirements V[2] . Mode [Device planning] V> Voltage protection instance number 2: Pre-configured as overvoltage protection for LV connections. For the password-protection (of access level “S.3”), see the “Security”...
  • Page 9 2 G99-Specific Protection Settings 2.1.2 V[2]: Voltage Protection Pre-Configured According to the LV Requirements V[2] . V> [Protection Para / Set 1…4 / V-Prot / V[2]] If the pickup value is exceeded, the module is started. • Set 1: 1.14 Vn The definition of Vn is dependent on both the Field Parameter »VT con«...
  • Page 10: 3]: Voltage Protection Pre-Configured According To The Lv Requirements

    2 G99-Specific Protection Settings 2.1.3 V[3]: Voltage Protection Pre-Configured According to the LV Requirements 2.1.3 V[3]: Voltage Protection Pre-Configured According to the LV Requirements V[3] . Mode [Device planning] V> Voltage protection instance number 3: Pre-configured as overvoltage protection for LV connections. For the password-protection (of access level “S.3”), see the “Security”...
  • Page 11 2 G99-Specific Protection Settings 2.1.3 V[3]: Voltage Protection Pre-Configured According to the LV Requirements V[3] . V> [Protection Para / Set 1…4 / V-Prot / V[3]] If the pickup value is exceeded, the module is started. • Set 1: 1.19 Vn The definition of Vn is dependent on both the Field Parameter »VT con«...
  • Page 12: 4]: Voltage Protection Pre-Configured According To The Hv Requirements

    2 G99-Specific Protection Settings 2.1.4 V[4]: Voltage Protection Pre-Configured According to the HV Requirements 2.1.4 V[4]: Voltage Protection Pre-Configured According to the HV Requirements V[4] . Mode [Device planning] V< Voltage protection instance number 4: Pre-configured as undervoltage protection for HV connections. For the password-protection (of access level “S.3”), see the “Security”...
  • Page 13 2 G99-Specific Protection Settings 2.1.4 V[4]: Voltage Protection Pre-Configured According to the HV Requirements V[4] . V< [Protection Para / Set 1…4 / V-Prot / V[4]] If the pickup value is exceeded, the module is started. • Set 1: 0.80 Vn The definition of Vn is dependent on both the Field Parameter »VT con«...
  • Page 14: 5]: Voltage Protection Pre-Configured According To The Hv Requirements

    2 G99-Specific Protection Settings 2.1.5 V[5]: Voltage Protection Pre-Configured According to the HV Requirements 2.1.5 V[5]: Voltage Protection Pre-Configured According to the HV Requirements V[5] . Mode [Device planning] V> Voltage protection instance number 5: Pre-configured as overvoltage protection for HV connections. For the password-protection (of access level “S.3”), see the “Security”...
  • Page 15 2 G99-Specific Protection Settings 2.1.5 V[5]: Voltage Protection Pre-Configured According to the HV Requirements V[5] . V> [Protection Para / Set 1…4 / V-Prot / V[5]] If the pickup value is exceeded, the module is started. • Set 1: 1.10 Vn The definition of Vn is dependent on both the Field Parameter »VT con«...
  • Page 16: 6]: Voltage Protection Pre-Configured According To The Hv Requirements

    2 G99-Specific Protection Settings 2.1.6 V[6]: Voltage Protection Pre-Configured According to the HV Requirements 2.1.6 V[6]: Voltage Protection Pre-Configured According to the HV Requirements V[6] . Mode [Device planning] V> Voltage protection instance number 6: Pre-configured as overvoltage protection for HV connections. For the password-protection (of access level “S.3”), see the “Security”...
  • Page 17 2 G99-Specific Protection Settings 2.1.6 V[6]: Voltage Protection Pre-Configured According to the HV Requirements V[6] . V> [Protection Para / Set 1…4 / V-Prot / V[6]] If the pickup value is exceeded, the module is started. • Set 1: 1.13 Vn The definition of Vn is dependent on both the Field Parameter »VT con«...
  • Page 18: G99-Specific Frequency Protection Settings

    2 G99-Specific Protection Settings 2.2 G99-Specific Frequency Protection Settings G99-Specific Frequency Protection Settings The MRU4 features six instances of the frequency protection module. • »f[1]« is configured and fixed as under-frequency stage 1. • »f[2]« is configured and fixed as under-frequency stage 2. •...
  • Page 19: F[2]: Underfrequency Protection Settings

    2 G99-Specific Protection Settings 2.2.2 f[2]: Underfrequency Protection Settings 2.2.2 f[2]: Underfrequency Protection Settings f[2] . Mode [Device planning] f< Frequency protection instance number 2: Fixed Configured as underfrequency protection. setting! This setting is fixed according to the G99 requirements and cannot be modified. f[2] .
  • Page 20: F[3]: Overfrequency Protection Settings

    2 G99-Specific Protection Settings 2.2.3 f[3]: Overfrequency Protection Settings 2.2.3 f[3]: Overfrequency Protection Settings f[3] . Mode [Device planning] f> Frequency protection instance number 3: Fixed Configured as overfrequency protection. setting! This setting is fixed according to the G99 requirements and cannot be modified. f[3] .
  • Page 21: G99-Specific Lom Protection Settings

    2 G99-Specific Protection Settings 2.3 G99-Specific LoM Protection Settings G99-Specific LoM Protection Settings For Loss of Mains (ROCOF, Intertripping), the G99-type-tested variant of the MRU4 features the following settings: • Intertripping is enabled by default, as it is expected for the Type D, but can be disabled.
  • Page 22: Df/Dt: Rocof (Rate-Of-Change-Of-Frequency) Protection Settings

    2 G99-Specific Protection Settings 2.3.2 df/dt: ROCOF (Rate-of-Change-of-Frequency) Protection Settings 2.3.2 df/dt: ROCOF (Rate-of-Change-of-Frequency) Protection Settings df/dt . Mode [Device planning] ROCOF Protection Module, general operation Fixed mode. setting! This setting is fixed according to the G99 requirements and cannot be modified. df/dt .
  • Page 23: G99-Specific Switchgear / Control Settings

    3 G99-Specific Switchgear / Control Settings G99-Specific Switchgear / Control Settings For all protection functions that are required by the EREC G99‑1‑6, the respective trip commands have already been assigned to the circuit breaker »SG[1]«. SG[1] . Off Cmdx [Control / SG / SG[1] / Trip Manager] Off Command to the Circuit Breaker •...
  • Page 24 Please reference publication MRU4-3.6-EN-G99 http://wwdmanuals.com/mru4-2 Woodward Kempen GmbH reserves the right to update any portion of this publication at any time. Information provided by Woodward Kempen GmbH is believed to be correct and reliable. However, Woodward Kempen GmbH assumes no responsibility unless otherwise expressly undertaken.

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