DataCTR - Data Center Power Systems

Automatic Transfer, Generator Paralleling, & Power Distribution Switchgear & Switchboards for Large Data Center Systems

APT has the resources and expertise to provide safe, reliable, and cost-effective solutions for the redundancy required for up to Tier 4 data center backup. That includes redundancy applications, especially for data center switchgear.

No matter the size or difficulty level of the site, we have you covered from the incoming utility, down to distribution and all the redundancy in between:

Data Center Site Planning, One-Line Diagram Development, Engineering and Design Review
Outdoor Walk-In Automatic Transfer & Distribution Switchgear Modules with sheltered working and maintenance rooms
Remote Monitoring SCADA systems
Pole Mounted or Pad Mounted Low and Medium Voltage Gang-Operated Disconnect Switches, Fuses, Surge Arresters, and Cut-Outs
Low and Medium Voltage Utility Intertie Switchgear according to IEEE 1547 and Utility Company requirements
Transient Voltage Surge Suppression
Outdoor NEMA 3R Non-Walk-In
Advanced controls for peak shaving, paralleling with utilities, generators, & islanding
Valve Regulated Lead Acid Energy Control Power Systems
Low to Medium Voltage Step-up & Step-Down Transformers
On-site Commissioning Assistance, Training, Troubleshooting & more!

Data Center Switchgear

Power Quality Metering & Utility Intertie

UL recognized for Advanced Power Metering
True RMS, 3 Element Power Quality Metering:
- Metering accuracy shall be in accordance with ANSI C12.20-1998, rated an with accuracies as follows:
  - Class 10 0.5% for energy.
  - 2% of reading and 0.02% of full scale for voltages and currents.
  - 3% of reading and 0.02% of full scale for active and apparent power
- Dedicated high-brightness digital LED displays are visible in the bright sun light or in the dark
Environmental Conditions
- Operating temperature:
  - -20°C to 60°C (-4°F to 140°F)
- Humidity:
  - 0 to 95% non-condensing
Service Entrance Utility Intertie Options
- IEEE 1547 – IEEE Standard for Interconnecting Distributed Resources with Electric Power
- Visible circuit disconnect with draw-out main circuit breaker
- Utility Intertie Protective Relay Functions as required
- Voltage & Current Test Switches per utility requirements
- Potential Transformers (PTs):
  - Fused, revenue grade potential transformers connected in wye or delta configuration
- Current Transformers (CTs):
  - Dedicated Revenue Grade CTs with 0.3% Accuracy @ B0.1 Burden for Revenue Grade Meters as required

What is Redundancy?

Redundancy refers to the inclusion of backup or duplicate components, systems, or configurations to ensure the reliable operation of the switchgear in case of component failures or other unforeseen events. Redundancy is a critical aspect of switchgear design because switchgear controls electrical power distribution and control. Failures in switchgear can lead to power outages, equipment damage, and potentially hazardous situations.

Parallel Switchgear:
- Parallel switchgear configurations involve the use of multiple identical switchgear assemblies operating in parallel. If one switchgear assembly fails, the others can continue to supply power, minimizing downtime.
Remote Switching:
- Some switchgear designs incorporate remote switching capabilities, allowing operators to switch between redundant components or systems from a safe distance without physical intervention.
Backup Sources:
- In some cases, switchgear may have provisions for connecting to backup power sources, such as emergency generators or uninterruptible power supplies (UPS). These backup sources ensure power continuity in the event of a primary power failure.
Maintenance Bypass:
- Redundancy can also be achieved by designing switchgear with maintenance bypass features. This allows for the isolation and replacement of faulty components without interrupting power to critical loads.
Fault Tolerance:
- Fault-tolerant designs incorporate redundancy to maintain operation even in the presence of faults, such as short circuits or component failures, without causing a complete system shutdown.

Low Voltage Data Center Switchgear/Switchboards

SBU-Series

208V – 690V, 3Ø
Silver plated copper bus
Standard bus ampacity up to 4000A
Bus Access & Cable Entry
- Front or Rear Access for either top or bottom cable entry
Your choice of Insulated Case or Molded Case Circuit Breakers
Intelligent close prevents simultaneously connecting multiple generators to dead bus with adding APT Generator Paralleling Modules to generator circuit breaker sections
NEMA 1 (indoor) or NEMA 3R (outdoor) Non-Walk-In
Integrated into APT PwrContainer ISO Container Based Outdoor Walk-In Switchgear Enclosure Module
Click here to learn more about our SBU-Series

Automatic Transfer with Bypass

208V – 480V
Automatic Transfer Switchgear with Bypass Isolation
- Automatic Transfer Overview:
  - If there is a total loss of utility power, automatic transfer mode will cause the generator to automatically start. The generator will then come on-line and assume site load.
  - After utility power returns, a sequence of functions may be executed to return the breakers to their normal positions in an open transition.
  - After the return to normal, the generator(s) automatically come off-line, cools down, and is ready for the next start.
- Manual Control Overview
  - See Page 10 of DataCTR Brochure
Provides independent electrical fault protection for all sources:
- 27/59 – Three-phase under/over voltage
- 81O/U – Over/under frequency (Optional)

Bypass/Isolation

208V – 480V
UPS Maintenance Bypass/Isolation with Manual, Non-electric Kirk Key Operation:
- Three identical Kirk Key locks with two identical Kirk Keys allow for only two circuit breakers to be closed at the same time.
- Remove key from source 1 and insert into the bypass circuit breaker. This enables source 2 to provide power to the load normally served by source 1.
Works best in Generator & UPS applications

Solenoid Key

UPS Bypass/Isolation with Solenoid Key Release Unit (SKRU):
- SKRU with A-1 Key held captive
- UPS output breaker A is closed supplying the critical load through the UPS
- Key B-1 is held captive in the L-O interlock on breaker A
- Maintenance bypass breaker B cannot be closed until the UPS is placed in bypass mode
  - As a result, this sends a signal to the SKRU allowing release of key A-1
- The SKRU has an apartment lock that will accept either key A-1 or B-1
See Page 11 of the DataCTR Brochure to learn how to supply critical load through the maintenance bypass breaker

Generator Paralleling & Control Sections in Plant Power Distribution Systems

Behind door mounted generator protection circuit breaker provides an added layer of operator protection
Can automatically parallel multiple generators in the same or multiple sections
Complete manual paralleling facilities
Complete 3Ø Generator Protection
Remote Start/Stop Interface
Prevention of closing of multiple generators to a dead bus simultaneously
Even more features!

Protection for Facility Main/Feeders in Plant Power Distribution Systems

High visibility, LED type indicating lights with a service life of 100,000 hours at 77°F
Your choice of Molded Case or Insulated Case Circuit Breakers
- See Page 14 of the DataCTR Brochure
Circuit Breaker Trip Units:
- LI – Adjustable long time, instantaneous trip settings
- LSI – Adjustable long & short time, instantaneous trip settings
- LSIG – Adjustable long & short time, instantaneous trip settings, with ground fault trip settings

PTX-Series Utility Power Transformers

Built for easy transportation, installation, and rapid power deployment applications
Low to Medium Voltage
High Voltage Side:
- Aluminum windings
- 2.4kV – 34,500 V Delta or Wye Connected
- BIL up to 200kV
- Live front
- Radial feed
Low Voltage Side:
- Aluminium windings
- Single Low Voltage winding
- 208V – 1200 V Delta or Grounded Wye Connected
- BIL up to 60kV
- Epoxy 2 piece-bushings with 4-holes blade
Pad Mount, Step Down
Ratings:
- 500kVA – 3,000 kVA
- Frequency: 60 Hz
- Impedance: 5.75% ± 7.5%
- Temperature Rise: 65°C
Dead front or Loop feed options
Enclosure:
- Outdoor NEMA 3R
- Mild steel tank & cabinet
- Powder paint system; Color: ANSI 70 or Green Munsell 7GY 3.29/1.5
- Weights: 7000 – 17,500 lbs.
APT FAC-Series front access compact low and medium voltage air insulated switchgear is the ideal switchgear for this transformer
You can find more on the PTX-Series Dry Type & Oil Filled Power Transformers here