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    Earth-Leakage Protection: Add-On Protection Against Insulation Faults Using A Vigi Module or Vigirex Relay

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    sandrititos
    This document discusses earth-leakage protection options for Compact NSX circuit breakers, including: 1) Adding a Vigi module directly to the circuit breaker, forming a Vigicompact NSX, which actuates the trip unit. 2) Using a separate Vigirex relay and toroids, which is useful when installation constraints limit space. 3) Vigi modules come in different types with adjustable settings for sensitivity and time delay and comply with relevant safety standards.

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    Download as PDF, TXT or read online from Scribd

    Earth-Leakage Protection: Add-On Protection Against Insulation Faults Using A Vigi Module or Vigirex Relay

    Uploaded by

    sandrititos
    269 views2 pages
    This document discusses earth-leakage protection options for Compact NSX circuit breakers, including: 1) Adding a Vigi module directly to the circuit breaker, forming a Vigicompact NSX, which actuates the trip unit. 2) Using a separate Vigirex relay and toroids, which is useful when installation constraints limit space. 3) Vigi modules come in different types with adjustable settings for sensitivity and time delay and comply with relevant safety standards.

    Original Description:

    Compact NSX Vigi.

    Original Title

    Compact NSX Vigi

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    © Attribution Non-Commercial (BY-NC)

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    This document discusses earth-leakage protection options for Compact NSX circuit breakers, including: 1) Adding a Vigi module directly to the circuit breaker, forming a Vigicompact NSX, which actuates the trip unit. 2) Using a separate Vigirex relay and toroids, which is useful when installation constraints limit space. 3) Vigi modules come in different types with adjustable settings for sensitivity and time delay and comply with relevant safety standards.

    Copyright:

    Attribution Non-Commercial (BY-NC)
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    269 views2 pages

    Earth-Leakage Protection: Add-On Protection Against Insulation Faults Using A Vigi Module or Vigirex Relay

    Uploaded by

    sandrititos
    This document discusses earth-leakage protection options for Compact NSX circuit breakers, including: 1) Adding a Vigi module directly to the circuit breaker, forming a Vigicompact NSX, which actuates the trip unit. 2) Using a separate Vigirex relay and toroids, which is useful when installation constraints limit space. 3) Vigi modules come in different types with adjustable settings for sensitivity and time delay and comply with relevant safety standards.

    Copyright:

    Attribution Non-Commercial (BY-NC)
    Download as PDF, TXT or read online from Scribd
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    Functions and characteristics

    Earth-leakage protection
    Add-on protection against insulation faults using a Vigi module or Vigirex relay
    Circuit breaker with add-on Vigi module (Vigicompact NSX)
    b For general characteristics of circuit breakers, see pages A-6 and A-7. b Add-on Vigi modules. Earth-leakage protection is achieved by installing a Vigi module (characteristics and selection criteria on next page) directly on the circuit breaker terminals It directly actuates the trip unit (magnetic, thermal-magnetic or Micrologic).

    There are two ways to add earth-leakage protection to any three or four-pole Compact NSX100 to 630 circuit breaker equipped with a magnetic, thermal-magnetic or Micrologic 2, 5 or 6 trip unit: b by adding a Vigi module to the circuit breaker to form a Vigicompact NSX b by using a Vigirex relay and separate toroids.

    Circuit breaker combined with a Vigirex relay


    Compact NSX circuit breaker + Vigirex relay
    Vigirex relays may be used to add external earth-leakage protection to Compact NSX circuit breakers. The circuit breakers must be equipped with an MN or MX voltage release. The Vigirex relays add special tripping thresholds and time delays for earth-leakage protection. Vigirex relays are very useful when faced with major installation constraints (circuit breaker already installed and connected, limited space available, etc.). Vigirex-relay characteristics b Sensitivity adjustable from 30 mA to 250 mA and 9 time-delay settings (0 to 4.5 seconds). b Closed toroids up to 630 A (30 to 300 mm in diameter), split toroids up to 250 A (46 to 110 mm in diameter) or rectangular sensors up to 630 A. b 50/60 Hz, 400 Hz distribution systems. Options b Trip indication by a fail-safe contact b Pre-alarm contact and LED, etc.
    Vigicompact NSX100 to 630.
    PB103579-21

    Compliance with standards b IEC 60947-2, annex M b IEC/EN 60755: general requirements for residual-current operated protective devices b IEC/EN 61000-4-2 to 4-6: immunity tests b CISPR11: radio-frequency radiated and conducted emission tests b UL1053 and CSA22.2 No. 144 for RH10, RH21 and RH99 relays at supply voltages up to and including 220/240 V.

    044322

    Earth-leakage relay.

    051352

    Separate toroids.

    A-34

    PB103579-21

    Vigicompact NSX100 to 630 circuit breakers with earth-leakage protection


    Addition of the Vigi module does not alter circuit-breaker characteristics: b compliance with standards b degree of protection, class II front-face insulation b positive contact indication b electrical characteristics b trip-unit characteristics b installation and connection modes b indication, measurement and control auxiliaries b installation and connection accessories. Dimensions and weights
    Dimensions W x H x D (mm) Weight (kg) 3 poles 4 poles 3 poles 4 poles

    NSX100/160/250
    105 x 236 x 86 140 x 236 x 86 2.5 3.2

    NSX400/630
    135 x 355 x 110 180 x 355 x 110 8.8 10.8

    Vigi earth-leakage protection modules


    Compliance with standards b IEC 60947-2, annex B. b Decree dated 14 November 1988 (for France). b IEC 60755, class A, immunity to DC components up to 6 mA b operation down to -25 C as per VDE 664. Remote indications Vigi modules may be equipped with an auxiliary contact (SDV) to remotely signal tripping due to an earth fault. Use of 4-pole Vigi module with a 3-pole Compact NSX In a 3-phase installation with an uninterrupted neutral, an accessory makes it possible to use a 4-pole Vigi module with connection of the neutral cable. Power supply Vigi modules are self-supplied internally by the distribution-system voltage and therefore do not require any external source. They continue to function even when supplied by only two phases.

    PB103580-36

    Vigi module selection


    DB112147

    Type
    Number of poles NSX100 NXS160 NSX250 NSX400 NSX630

    Vigi ME
    3, 4 (1) b b xed 0.3 xed < 40 < 40 200...440

    Vigi MH
    3, 4 (1) b b b adjustable 0.03 - 0.3 - 1 - 3 - 10 adjustable 0 - 60 (2) - 150 (2) - 310 (2) < 40 < 140 < 300 < 800 200... 440 - 440...550

    Vigi MB
    3, 4 (1) b b adjustable 0.3 - 1 - 3 - 10 - 30 adjustable 0 - 60 - 150 - 310 < 40 < 140 < 300 < 800 200...440 - 440...550

    1 Sensitivity setting 2 Time-delay setting (for selective earth-leakage protection). 3 Lead-seal xture for controlled access to settings. 4 Test button simulating an earth-fault for regular checks on the tripping function 5 Reset button (reset required after earth-fault tripping). 6 Rating plate 7 Housing for SDV auxiliary contact.

    Protection characteristics
    Sensitivity In (A) Time delay Intentional delay (ms) Max. break time (ms) Rated voltage V AC 50/60 Hz

    Plug-in devices The Vigi module can be installed on a plug-in base. Special accessories are required (see catalogue number chapter).

    (1) Vigi 3P modules may also be used on 3P circuit breakers used for two-phase protection. (2) If the sensitivity is set to 30 mA, there is no time delay, whatever the time-delay setting.

    Operating safety
    The Vigi module is a user safety device. It must be tested at regular intervals (every 6 months) via test button.

    A-35

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