Initial Start-up and Phase Check

DC Fuses

DC Fuse

Holder

Fuses seen from below

Figure 17

4.2Initial Start-up and Phase Check (External Batteries)

1.Ensure that the external battery breaker for the battery system is set to “OFF”.

2.Open DC fuse holder (F001, F002, F003). For location of DC fuse holder, see Component Overview illustration. Place the DC fuses in the fuse holder. Make sure that the red tab on the fuse faces the top of the fuse holder. Make sure that the fuse locking tabs are aligned in the slots on the fuse holder.

3.Press each fuse into place. The fuse will “click” into place when it is locked in correctly.

4.Using an open palm, close the fuse holder.

5.Turn the pre-charge/discharge switch to the “pre-charge” position and hold it until the LED turns off.

6.Switch the battery breaker “ON”. The UPS display should show “System type xxkVA xxxV”.

7.Within 20 seconds, the display should show **Stand-by** and an audible alarm should sound.

8.At utility input, switch on the input power to the Maintenance Bypass Panel.

9.At the Maintenance Bypass Panel, switch the UPS AC disconnect switch “ON”.

10.Check the phase rotation at the service panel and the unit. The unit will not start if the phase rotation is incorrect. The phase rotation must be A, B, C and clockwise.

11.When the audible alarm stops, press the green “ON” button located inside the UPS front door. The display will show “Normal operation load power xx%”.

990-1378

Installation Guide APC BC300 Series 10kW 208/450/480V UPS

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APC 990-1378 manual Initial Start-up and Phase Check External Batteries, DC Fuses

990-1378 specifications

The APC 990-1378 is a high-performance power supply designed for environments where reliability and efficiency are paramount. As a part of APC's range of power protection solutions, this unit is specifically engineered to safeguard critical electronic devices and maintain consistent power delivery even under demanding conditions.

One of the main features of the APC 990-1378 is its robust battery backup system. This ensures that connected devices remain operational during power outages, providing peace of mind for businesses and individuals relying on constant power supply for applications such as networking, telecommunications, and computer systems. The unit is equipped with advanced battery management technology that extends battery life while optimizing energy consumption.

In terms of technologies, the APC 990-1378 incorporates sine wave output, which delivers clean and stable power suitable for sensitive electronic equipment. This feature is essential for preventing equipment damage caused by power surges or fluctuations. Moreover, the power supply comes with multiple outlets, allowing users to connect several devices simultaneously without compromising performance.

Another characteristic that sets the APC 990-1378 apart is its intelligent LCD display. This user-friendly interface provides real-time information on power consumption, battery status, and system health, allowing users to monitor performance easily. The display also features customizable settings, giving users the flexibility to adapt the unit to their specific needs.

The build quality of the APC 990-1378 is impressive, designed to endure both indoor and outdoor environments. Its rugged casing and efficient cooling system guarantee reliable operation in various conditions, making it suitable for different applications, from home offices to enterprise data centers. Additionally, the compact design of this power supply saves valuable space, an essential consideration for users with limited installation areas.

The APC 990-1378 is also compatible with various management software solutions that facilitate remote monitoring and control. This capability is particularly beneficial for IT administrators who need to manage multiple units across different locations efficiently.

In summary, the APC 990-1378 is a versatile and reliable power supply that prioritizes performance, safety, and user convenience. Its advanced features and technologies make it a valuable asset for anyone seeking reliable power protection solutions in today's increasingly tech-driven world.