Information on Power to Racks
A: N+N power is provided to customer racks
Do you have dual utility electrical service and distribution to site?
A: Stellium has dual source site utility power. This originates from diverse utility electrical sources. Power supply from separate substation. Medium voltage distribution/sources are in redundant/ring configuration to the medium voltage transformers. Each source is capable of supporting 100% of the site building loads.
What is your Standby Generator Redundancy?
A: N+1 redundant generators for the entire site power including the IT load & mechanical load.
What is your Uninterruptible Power Supply (UPS) Redundancy?
A: UPS is a 2N redundant system as per IEEE Std. 3006.7-2013
Information on the Ride-thru energy source for the UPS?
A: UPS is provided with VRLA / Pure Lead / Li-Ion batteries ride-through to support the design load for sufficient time to transfer to and from generator source with worst case failure scenarios. Typical ride through time is not less than 5 minutes.
Information on your Lightning protection & Transient voltage surge protection
A: Lightning Protection Systems are installed and listed by UL using the UL96A Standard and information from NFPA 780. The incoming medium voltage switchgear includes distribution and intermediate class lightning surge arrestors. Every low voltage bus includes UL or CE listed Transient Voltage Surge Suppression devices (TVSS). These are designed to limit over voltage transient events from damaging IT load and the other critical equipment.
Information on your Power Distribution Units (PDUs) / Rack power panels / Above Rack Busduct
A: We provide dedicated Power Distribution Units for electrical distribution to racks. The PDUs/RPPs are of 2N (A&B) configuration with diverse routes and location.
Edge & Gateway rack are located in a separate fault domain (power, space and security) from other IT load.
Information on Static Transfer Switches
A: The system has full maintenance bypass design capable of full out of phase transfer between sources with transformer loads such that transformer inrush is reduced to no more that 2x the FLA of the transformer. Static switch design limits voltage transient excursion to values within the ITIC computer power tolerance curve. All out of phase transfer times do not result in outage to the IT loads longer than 20 milliseconds maximum. Harmonic voltage distortion remains below 5% THD peak under steady state conditions.
Information on your Concurrent Maintainability
A: System is 100% concurrently maintainable at every bus with dual corded IT load using dual power supply to the IT load to allow for maintenance of final connection points to the IT loads.
Information on your Electrical Power Monitoring power quality
A: PDU monitoring includes: Power quality metering, current THD, voltage THD, sag/swell detection, waveform capture, power quality (ITIC) reporting and Circuit Breaker Status. ITIC reports plot magnitude and duration of all power quality events against the ITIC curve. Metering is located downstream of potential sources of transients or harmonics, such as UPS’s and STS’s.
Information on Electrical Power Monitoring for network resiliency
A: The Electrical monitoring network runs on a secure, resilient, managed infrastructure, with no single point of failure for any area larger than one Data Hall, or suite. Network failure zones are aligned with electrical and mechanical failure zones.