2018 Newsletter

NEW UPS PRODUCT LINE

A-Series UPS up to 15kVA

A-Series UPS up to 15kVA

La Marche releases the new A-Series UPS System (AUPS) which is an Uninterruptible Power Supply system designed to utilize separate rectifier and inverter components allowing for simplicity in sizing the system and flexibility in configuring each component as required. The Static Switch in this UPS Series is a fast transfer switch that can be configured to have either the Inverter or the Alternate Source as the primary source. AUPS systems are also equipped with a rotary Make-Before-Break Manual Bypass Switch.

The pure sine wave Inverter provides reliability through transistor switching and a ferroresonant transformer which has inherent voltage regulation, output filtering and overload protection.

The Rectifier (Charger) section uses controlled ferroresonant technology, with separate adjustable voltage settings for float and equalize. It provides high efficiency, high power factor, short circuit protection, and an integral alarm package.

AUPS systems are available in many AC voltage ratings and with DC bus voltages up to 125Vdc. Along with separate Form-C Alarm Contacts for each of the rectifier and inverter sections, AUPS systems also provide remote monitoring capabilities via DNP3 and Modbus protocols.

NEW FEATURES FOR A77

Battery Continuity Test and enhanced Data Log events Access.

Battery Continuity Test and enhanced Data Log events Access

The A77 Battery Charger line has recently been updated with two additional standard features, which provide further information on the system performance and battery condition. The new Battery Continuity Test feature keeps the user informed with the overall condition of the battery as it provides information on the battery’s capability of supporting the load in the DC system. This feature helps the used fulfill some of the requirements of NERC. Once the test is started, the charger lowers its output voltage to a safe preset Voltage in order to check on the battery’s capability to support the load in case of power outages. This safe preset value is set above the battery end-of-discharge voltage, to ensure the loads are not dropped in case of an open battery or drastic battery failures.

The Battery Continuity Test can assess functions in single unit installations, or in parallel installations where multiple units are connected. The test can be started manually or

automatically based on a preset time interval. On units equipped with a communication card, the test can be started remotely. The test results are displayed on the LCD screen, transmitted over the optional remote communication protocols and stored in the charger data log.

Another useful feature recently added to the A77 model is the ability to view some of the latest data log events that were recorded right on the LCD screen. This provides the user with an easy and convenient method to access those alarms or notifications in case an urgent corrective action is required.

ESCR with special Charging Curve for Enersys Odyssey batteries

La Marche Engine Start Battery Charger Series (ESCR) now can be configured to charge Enersys Odyssey engine starting batteries. Enersys preferred 3 stage special charge profile is pre-programmed in this battery charger and can easily be selected during the installation of the charger or pre-configured from the factory when requested. This feature follows the exact charging curve and parameters as recommended by the battery manufacturer. This guarantees proper charging of the battery while other standard float chargers may undercharge the battery.

ESCR with special Charging Curve for Enersys Odyssey batteries

USC Battery Charger + Ultracapacitor

USC Battery Charger + Ultracapacitor

For NFPA 110 Level 1 and 2 sites, La Marche USC + Ultracapacitor GSS modules can be installed alongside existing batteries, providing high current starting power even in the event of battery system failure.

Batteries and Ultracapacitors are similar as they both store and release electrical energy. A major difference between batteries and Ultracapacitors is the relationship of power to energy delivered by each technology. Batteries depend on a chemical reaction to take place during charging and discharging, therefore, they can be used as energy storage. Ultracapacitors store a limited amount of energy and they can deliver stored energy in high power bursts, which can reduce high power sudden demands from the battery. Ultracapacitor, as an adjunct to a battery, can make the battery last longer, especially in high power instantaneous load applications.

Low Harmonic Distortion (THD) Battery Charger

The 12 Pulse arrangement of the A77 Battery Charger has been re-engineered to immensely reduce the Total Harmonic Distortion (THDi). Typical 12 Pulse SCR Battery Chargers are capable of achieving 10% maximum THDi distortion. The new La Marche 12 Pulse A77 Charger maintains the Total Harmonic Distortion below 5%, even when the charger operates at its full rated output.

Over the years, the increased losses in utility power systems, low input power factor and efficiency has been a concern. La Marche’s enhanced 12 Pulse design outperforms typical SCR Chargers’ performance and power character- istics, such as improved Power Factor, output ripple and switching devices durability.

Low Harmonic Distortion (THD) Battery Charger

MSM Marine Battery Charger NOW with Modbus Ethernet capabilities

MSM Marine Battery Charger NOW with Modbus Ethernet capabilities

With the ever growing emphasis on wireless communications, the marine market is seeing more and more critical equipment needing to be connected to SCADA systems. The Battery charger is one example where precise and secured information is critical to the user. Utilizing the newly added option 57Y – Modbus Ethernet Communication – will allow the user to remotely monitor and control the MSM Charger over an Ethernet connection. Read coils and registers will include AC power, Current limit, Charger Mode, Output voltage and current indications among others. Write coils will allow control of Float and Equalize modes. The option includes a Modbus PC board and RJ-45 Ethernet connection that will be integrated into the unit, avoiding any physical dimension changes to the case.

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