m-LVD Low Voltage Disconnect - Dimensioned Drawing

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Blue Sea Systems

7635-BSS

Rafmagnsskammtenging fyrir lágspennu m-LVD

Le déconnecteur basse tension BLUE SEA m-LVD est une solution automatique pour protéger vos batteries 12V DC de la décharge profonde, en coupant les charges non essentielles. Il offre une tension de déconnexion ajustable de 11.3V à 12.1V et une certification IP67. Ce produit inclut le commutateur de contrôle à distance PN 7928 et un couvercle isolant arrière.

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127,73€

127,73€ ~~138,72€~~

með skatti Sendingar reiknaðar við greiðslu.

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Free pickup point for orders over €150 in France
Pickup at Skysat possible

Custom installation

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Installers near you

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Service & Support

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Technical specifications

Nefnd spenna	12
Stærð tenginga	M6 (1/4"-20)
IP-stig	IP67
AFD-vernd	Non
Alarm Time Before Disconnect	5
Samfelldur straumur (A)	65.0
Tegund stjórnunar	Commutateur à distance
Mál (L x H x D)	70 x 70 x 50
Disconnect Voltage Range	11.3V - 12.1V
Factory Default Disconnect Voltage	12.1
Stöðutímabil straumur (A)	115 (5 min)
Lásanlegur lyklaborð	Non
Gerð festingar	Surface, panneau avant ou panneau arrière
Fjöldi póla	1
Operating Current Connected Ma	95
Operating Current Open Ma	4
Virkjunarspennuviðmið	11.3V - 13.5V DC (nominal 12V DC)
Þvermál skurðar í spjaldi (mm)	58.7
Staðsetningar	Réglage de la tension de déconnexion, Override, Arrêt
Notkunarafbrigði	Déconnecte automatiquement les charges non essentielles pour préserver la batterie et assurer le démarrage du moteur.
Reconnect Voltage	13
Remote Control Switch Included	Oui
Tegund rofskips	Déconnecteur de basse tension automatique
Gerð tenginga	Goujon fileté
Time Delay To Alarm	5
Total Disconnect Delay	10
Tegund tenginga	À goujons

Detailed description

Hannaður til að sjá um snjalls stjórnun á 12V DC aflgjöf, er m-LVD Low Voltage Disconnect frá BLUE SEA sjálfvirkur lágspennurafmagnsskammtenging. Hann verndar rafgeymana fyrir djúpurlöðun með því að slökkva sjálfkrafa á óþarfa álagi þegar spennan í rafgeyminum fellur undir fyrirfram stilltan mörk. Þessi virkni tryggir að nægjanleg orka er varin fyrir vélinni til að ræsast eða lengir líftíma rafgeymans.

Tæknispecar og lykilvirknisvið

m-LVD hefur nafnspennu 12V DC, með 65A stöðugri og 115A stöðugri í 5 mínútur. Spennumörk fyrir skammtengingu eru stillanleg frá 11,3V upp í 12,1V, með upphaflegri stillingu á 12,1V. Kerfið hefur 5 mínútna töf áður en viðvörunarmerki (ef valið) virkjast þegar spennan fellur undir mörkin, fylgt af viðbótar töf á 5 mínútur áður en skammtengingin verður raunveruleg, samtals 10 mínútur. Endurtenging verður sjálfkrafa þegar spennan er meiri en 13,0V í 2 mínútur eða 13,5V í 30 sekúndur. Virkur straumur er 95mA í tengdu ástandi og 4mA í opnu ástandi.

Þessi rafmagnsskammtenging fylgir með fjarskiptaknippi PN 7928, sem gerir notandanum kleift að stilla spennumörk fyrir skammtengingu, virkja "Override" ham sem seinkar skammtengingu um 10 mínútur, eða slökkva handvirkt á rafrásum með "OFF" ham. Knippið gerir einnig notandanum kleift að slökkva á valfrjálsu hljóðvaranum. m-LVD er með IP67 vörn fyrir tímabundið neðansjávarnotkun og uppfyllir kröfur fyrir varnir gegn ytri bruna ISO 8846 og SAE J1171. Hann styður víra upp að 1/0 AWG (50mm²) með boltar á 1/4"-20 (M6) sem krefjast 60 in-lb (6,78 Nm) herpikrafts. Þyngd einingunnar er ekki tilgreind í gefinni heimild eða vefheimildum.

Innleiðing og staðsetning

Meðan vörur eins og handvirkar rafgeymasneiðar frá BLUE SEA eða skiptarar fyrir rafhleðslu (ACR) sjá um að einangra eða dreifa rafhleðslu, er m-LVD staðsettur sem hluti af fyrirbyggjandi varnarkerfi fyrir rafgeyma. Hann greinist frá einfaldri rafgeymasneið með sjálfvirku eðli sínu og getu til að sjá um sérstaklega óþarfa álag. Miðað við flóknari lausnir sem hafa fjölvirkni rafgeymastjórnunarkerfi, býður m-LVD upp á markvissa og einfaldlega lausn fyrir lágspennuskammtengingu, sérstaklega hentuga fyrir 12V DC uppsetningar sem þurfa áreiðanlega varnir gegn djúpurlöðun án flækju heilra kerfa.

Documentation

Type	Nom
	EN - Instructions - m-LVD Low Voltage Disconnect
	EN - Certificate - m-LVD Low Voltage Disconnect
	EN - Certificate - m-LVD Low Voltage Disconnect

Expert review

Pol CONIN

Stjórnandi stafrænna hluta

« Smart 12V DC battery protection: expert review of the m-LVD disconnect »

The BLUE SEA m-LVD low-voltage disconnect is a critical component for the longevity of 12V DC onboard electrical systems. It is specifically designed for sailboat owners, recreational vehicle users, or standalone installations seeking to protect their service battery bank from deep discharges without constant manual intervention. Its primary function is to maintain sufficient energy reserves for engine starting by automatically shedding secondary loads before voltage reaches a critical threshold.

Installation is simplified by its multiple mounting options (surface, front or rear panel) and clear documentation. For optimal integration, it should be placed on non-critical charging circuits downstream of the main battery switch. Wiring must comply with recommendations for 6 AWG (16mm²) for nominal currents, though the device physically accepts up to 1/0 AWG (50mm²). Adding an optional alarm provides a pre-alert before actual disconnection.

This m-LVD stands out from traditional battery switches due to its intelligence and automation. Unlike a simple switch, it actively monitors voltage and acts preventively. Its ability to adjust the disconnect voltage (between 11.3V and 12.1V) and the "Override" function via the remote switch offers valuable flexibility to adapt to different battery types and immediate user needs. It is a standalone and effective solution that does not require integration into a complex NMEA 2000 network, making it particularly relevant for simpler electrical systems or as a complement to existing installations. Its robust design, IP67 certified and compliant with ignition protection standards, ensures reliability in marine environments.

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Rafmagnsskammtenging fyrir lágspennu m-LVD

127,73€

127,73€ ~~138,72€~~

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Frequently asked questions

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What is BLUE SEA's m-LVD Low Voltage Disconnect?

BLUE SEA's m-LVD (Low Voltage Disconnect) is an automatic low-voltage disconnect device designed for 12V DC systems. Its primary function is to protect batteries from deep discharge by automatically cutting non-essential loads when battery voltage drops below a predefined threshold. This preserves the energy required for engine starting or extends battery lifespan.

What are the main functions of the m-LVD Low Voltage Disconnect?

The main functions of the m-LVD include:

Protection of batteries against deep discharge.Automatic disconnection of non-essential loads in case of low voltage.Automatic reconnection of circuits when battery voltage is restored.A visual indicator for low-voltage status.An alarm output for optional audible warning.Remote control for adjusting disconnect voltage, an "Override" mode, and a manual "OFF" function.

What is the nominal operating voltage of the m-LVD?

The m-LVD Low Voltage Disconnect is designed to operate with a nominal voltage of 12V DC.

What is the DC current capacity of the m-LVD?

The m-LVD can handle a DC current of 65 amperes (A).

What is the intermittent current capacity of the m-LVD?

The m-LVD has an intermittent current capacity of 115 amperes (A) for a maximum duration of 5 minutes.

Is the m-LVD waterproof or resistant to marine environments?

Yes, the m-LVD is IP67 certified, meaning it is protected against temporary immersion. It also meets the external ignition protection requirements of ISO 8846 and SAE J1171, making it suitable for marine environments.

What are the safety certifications of the m-LVD?

The m-LVD complies with external ignition protection requirements per ISO 8846 and SAE J1171 standards. It is also CE certified under Directive 2013/53/EU for recreational craft and motorized watercraft.

What is the current consumption of the m-LVD?

The m-LVD consumes 95 mA in connected state (normal operation) and only 4 mA in open state (disconnected).

Does the m-LVD have a visual indicator for voltage status?

Yes, the m-LVD is equipped with a status light that provides a visual warning of low voltage before disconnection. This indicator is present on both the m-LVD and the remote control switch.

Can the m-LVD trigger an audible alarm in case of low voltage?

Yes, the m-LVD has an alarm output that can be connected to an optional audible alarm. This alarm is triggered 5 minutes after the voltage drops below the disconnect threshold, providing an audible warning before the circuits are effectively cut off.

How to adjust the disconnect voltage on the m-LVD?

To adjust the disconnect voltage, hold the OVERRIDE position on the remote control switch for 10 seconds. The LED will start flashing to indicate the current setting. Use the OFF position to decrease the voltage in 0.2V increments (down to 11.3V) and the OVERRIDE position to increase it (up to 12.1V). The factory setting is 12.1V. Release the switch and wait approximately 20 seconds for the new setting to be saved.

What are the safety prerequisites before installing the m-LVD?

Before starting any electrical installation, it is imperative to disconnect all AC and DC power sources. If you are not familiar with electrical systems, it is recommended to consult a qualified professional. Never service equipment that has been automatically disconnected by the m-LVD without first permanently removing power by another means than the m-LVD itself.

How to choose the mounting location for the m-LVD and its remote control switch?

The m-LVD can be mounted in three ways: on the rear panel, on the front panel, or surface-mounted. The remote control switch is typically mounted on a panel. Drilling dimensions are provided for the remote switch installation.

What cable size is recommended to connect the m-LVD?

To match the m-LVD current capacity, the minimum recommended cable size is 6 AWG (16mm²). Larger cable sizes may be required to minimize voltage drop over long distances. Consult a certified ABYC electrician for proper cable sizing and fuse selection.

What are the dimensions of the m-LVD connection terminals?

The m-LVD connection terminals are 1/4"-20 (M6) studs.

Is the m-LVD supplied with a remote control switch?

Yes, the m-LVD is supplied with the remote control switch PN 7928. This switch allows you to adjust the disconnect voltage, activate the "Override" mode, or manually cut circuits using the "OFF" function.

Should fuses be used with the m-LVD? And if so, what size?

Yes, using fuses is essential for circuit protection. The fuse size depends on the maximum current of the protected circuit:

For ≤30A: 40A-50A fuse with #10 AWG (6mm²) cableFor ≤50A: 60A-65A fuse with #8 AWG (10mm²) cableFor ≤65A: 90A-100A fuse with #6 AWG (16mm²) cableIt is recommended to consult a certified ABYC electrician for correct fuse placement and sizing.

Is the m-LVD compatible with systems other than 12V DC?

No, the m-LVD is specifically designed for electrical systems with a nominal voltage of 12V DC. It is not compatible with systems of different voltage (e.g., 24V DC or AC).