ISM

Series of three-phase uninterruptible power supplies (UPS) produced by GE Digital Energy™ consists of reliable and high-duty systems provides electric power supply protection for a wide range of consumers. Integrating of up to eight UPS into a parallel system with the GE’s unique technology — Redundant Parallel Architecture (RPA) — enhances the power supply system reliability by many times.

This technology envisages control over each UPS operation in peer-to-peer system with reserving all the most important elements and functions. Distributed bypass provides flexibility when the system is expanded or reduced if outer conditions require so.

Application of the reserved distribution circuits improves reliability even more. The static load switch Digital Energy™ STS provides electric power supply with selection between two UPS groups. In normal conditions the STS feeds the load from the main system. If it fails, the STS transfers the electric power supply of the load to the reserve UPS system. STS should be located as close as possible to the protected load to minimize the distribution circuit failure risk.

One of the most important conditions of normal operation for such system is synchronizing of two UPS systems including battery operation mode. The Intelligent Synchronizing Module (ISM) by Digital Energy™ ensures synchronizing of two parallel UPS groups while each of them consists of not more than six UPS with power capacity from 10 up to 500 kVA. The reserved power unit and communication buses connecting the ISM with the parallel UPS systems through RPA technology make the ISM an extremely reliable device synchronizing the work of two groups under any conditions.

Service support 24 x 7: during the whole service life all equipment by GE is completely provided with service support rendering assisting in inspection, preliminary maintenance or effective repair and personnel training twenty-four hours a day.

An example of ISM use

A and B groups of UPS are being synchronized constantly, thus, the static load switcher provides electric power supply of critical load from A or B group of UPS.

•  The reserved energy unit ensures high reliability. 
• The reserved communication bus is stable to occasional wire damage. 
• Data transfer with CRC (Cyclic Redundancy Check) increases non-interference.
• High fidelity of synchronization allows switching feed from one source to another insensibly for the load. 
• Underside and above cable entry simplifies module installation.
• Compatible with GE Digital Energy SitePro und SG Series UPS series with the RPA technology.
• International unified power supply unit (208 or 400 or 480 V).
• Synchronizes operation of two UPS groups (in any of up to six UPS with the power from 10 up to 500 kVA).
• User-friendly interface of monitor board provides prompt receive of complete information.

Compatibility: _______________________ SitePro (series 6) and SG UPS Series
Power supply voltage:  ________________ 208 / 400 / 480 B 50/60 Hz
Power consumption (Wt): ______________ 25
Weight (kg): ________________________ 20
Noise level (dB(A): ___________________< 35
Cabinet type: _______________________ for wall-mounting
Protection degree: ___________________ IP 20
Color: _____________________________ RAL 9010 (white)
Dimension W x D x H (mm): ____________ 585 х 350 х190
Range of operation temperature: ________ 0 - 40°C
Safety standards: ____________________ EN50091-1, IEC62040-1, IEC60950
EMC standards: _____________________ EN500191-2 / FCC Class A

System Parameters:
Maximal phase shift between groups: ____ <0.2 grades
Number UPS in a group: ______________ not more than 6
Requirements to be met by UPS:  _______ all UPS must be equipped with the RPA (E version)
Distance between the UPS in a group:  ___ not more than 85 m between the first and last

Topology: synchronization of three groups not more than 6 UPS in each one
Technology: DSP (digital signal processor)