Liebert VM12000, VM18000 user manual KVA Maintenance Bypass Connections

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Input and output terminal blocks are provided on the back of the 8-12 kVA Liebert UPStation S™ as illustrated below. Conduit can be landed on the rear or bottom of the UPS. Note that side, rear, front and top access is required for service on all Liebert UPStation S™ product lines.

RS232-DB25

Input and output terminal blocks are provided on the back of the 18 kVA UPS as illustrated above right. Conduit can be landed on the rear or bottom of the UPS. Note that side, rear front and top access is required for service on all Liebert UPStation S™ product lines.

8-18 kVA Maintenance Bypass Connections

The 1512MBC and the 1518MBC maintenance bypass have four basic connections: maintenance bypass input, to UPS rectifier input, to UPS output and to critical load.

∙The input to the maintenance bypass comes from the utility source to the system. There must be a breaker feeding the system. Size the input feed breaker and

wiring as per NEC. The total current into the maintenance bypass should not exceed 46A for the 8 kVA, 56A for the 10 kVA, 66A for the 12 kVA and 94.4A for the 18 kVA

∙It is recommended that the site wiring and overcurrent protection be sized initially for 12 kVA if the UPS is an 8 or 10 kVA module.

∙Wire size range for TB5 terminal block is #10 to #22 AWG. Wire size range for TB1 through TB4 is #4 to #8 AWG. Terminal blocks have box type lug connections with slotted screw.

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Contents UPStation S Page Page Remote Emergency Power Off Repo Cable Liebert UPStation S Site Planning Data Unloading the UPS IntroductionOptional System Components Installation OutputKVA Start-up Checklist UPS accepts two-phase or three-phase power 18kVA Single Line Diagram KVA Start-Up ChecklistControl Buttons OperationControl / Display Panel LCD DisplayTable #2 Factory Default Settings Configuration Setting Default ValueDisabled See OptionsLCD Menu Tree Manual Restart after Manual Off On BatteryBattery Recharge Auto-BypassRemote Emergency Power Off Manual OffDistribution Configurable Distribution CD OptionsStandard Load Module Receptacle Voltage Circuit Configuration BreakerHardwire Load Module Load ModulesApproximate Weights in Pounds Model Number 125 175 Maintenance Bypass 8 18kVAWeights/Dimensions On-Line Standard FeaturesMaintenance TestInstallation MountingKVA UPS Connections KVA Maintenance Bypass Connections Operation Initial System Start-upTroubleshooting Transfer to Maintenance Bypass from On-LineTransfer to Test from Maintenance Bypass Transfer to On-Line from Test∙ Programming ∙ Review ∙ Override ∙ Load Labels Select a Time DelayGetting Started Select a Load Module∙ Turn OFF load ∙ Turn on load ∙ Warning Delays Power Management Programming Elements∙ Utility Failed ∙ Utility Restored LoadsStep #1B Define Parameters Start ClosureStep #1A Step #1CSiteNet 2 Power Surveillance SiteNet 1 Shutdown Interface KitsRS-232 with User-Configurable Relays VCR232C CablesVBS061 / VBS062 6 kVA Standard External Battery CabinetsVBD061 3.5-6 kVA VBD121 8 12 kVARoutine Maintenance NEC Wire Gauge Chart AppendixMins UPStation S 6 kVA Battery Run Times #1 UPStation S 10 kVA Battery Run Times #1 UPStation S 18 kVA Battery Run Times #1 Alarm Messages, Meanings, and Corrective Actions UPStation S Company Behind The Products

VM18000, VM12000 specifications

The Liebert VM12000 and VM18000 are advanced precision cooling systems designed to provide reliable temperature and humidity control in critical environments such as data centers, telecommunications facilities, and industrial applications. These systems are engineered to meet the diverse needs of modern infrastructures that demand optimal performance, energy efficiency, and robust reliability.

One of the key features of the Liebert VM series is its high cooling capacity. The VM12000 offers a cooling capacity of 12,000 BTU/h, while the VM18000 provides an impressive 18,000 BTU/h. This makes both models ideal for environments where heat load is significant, ensuring that critical equipment remains within operational limits. The systems employ variable speed technology, allowing them to dynamically adjust cooling output based on real-time conditions, which enhances energy efficiency and performance.

The Liebert VM series is equipped with advanced control systems, including microprocessor controls that enable precise monitoring and adjustments. Users can easily access real-time data through intuitive interfaces, allowing for seamless management of cooling settings. Additionally, the systems can be integrated into building management systems (BMS), offering centralized control that enhances operational efficiency.

Another notable characteristic of the VM series is its modular design. This allows for easy scalability, making it suitable for both small setups and large, complex installations. The flexibility offered by the modular design permits the addition of cooling units as cooling demands grow, ensuring that users can keep pace with their evolving requirements.

In terms of energy efficiency, the Liebert VM12000 and VM18000 meet and exceed the efficiency standards set by the industry. The systems utilize R-410A refrigerant, which is environmentally friendly and contributes to higher energy performance. This focus on sustainability not only reduces the carbon footprint but also lowers operating costs, providing significant savings over time.

Furthermore, the Liebert VM series is built with robust components designed for durability and longevity. The systems are engineered for high performance in demanding conditions, ensuring reliability even in the most challenging environments.

Overall, the Liebert VM12000 and VM18000 precision cooling units stand out for their high capacity, energy efficiency, advanced controls, and modularity. These features make them a top choice for businesses needing reliable cooling solutions to protect their critical infrastructure while also promoting energy sustainability.
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