NEBS-GR63 Seismic Simulation Test System

Team Corporation’s versatile high-performance seismic simulation system is the only system of its kind capable of performing all the Bellcore GR-63 test requirements in a single combined, dual-axis system.

By integrating our legendary servohydraulic actuators with our patented T-Film hydrostatic slip table bearings, we’ve created the perfect high-frequency long stroke vertical/horizontal system. With our available trunion mounted actuator system, repositioning from vertical to horizontal axis takes very little time.

Seismic Testing

Seismic testing, also commonly referred to as earthquake testing, is conducted to replicate earthquake conditions while examining the future effects on equipment in those conditions. Different industries use several standards to govern seismic testing. Testing involving telecommunications uses Network Building Equipment Systems (NEBS) guidelines.

IEEE 344 standards define test requirements for safety-related equipment in nuclear power plants. Tests like these are required to indicate that equipment can perform competently during and following a safe shutdown event when an earthquake occurs. Another recent earthquake test is the ICC-ES ACC 155 test, which determines acceptance criteria for nonstructural components.

GR-63 test requirements encompass minimum spatial and environmentally natural standards for all new telecommunications instruments used in climate-controlled spaces. The Telcordia-NIS and other industry representatives jointly developed these criteria specific to these applications. They apply to:

  • Switch and transport systems.
  • Interconnection and distribution frames.
  • Operations support systems.
  • Cable entrance facilities.
  • Associated cable distribution systems
  • Other power equipment.

Compliance with these requirements may increase network productivity, ease equipment installation, and enhance the economic planning, engineering, and operation of equipment spaces.

Environmental stresses may affect telecommunications equipment that’s physically installed in a building. Regular testing helps avoid equipment damage and malfunction caused by temperature, humidity, vibrations, and airborne contaminants. Testing also minimizes fire ignitions and fire spreading while providing improved space planning, simplified equipment installation, and increased energy efficiency.

Shake Table Testing

The shake table test is one of the most widely used techniques to assess the seismic performance of structures made of various materials. Commonly, software for earthquake analysis evaluates linear/nonlinear and elastic/inelastic dynamic responses of structures.

This testing uses a device designed for shaking building components, scaled slopes, or structural models with a wide range of simulated ground movements, including reproductions of recorded earthquakes time-histories.

Analysis from shake table testing builds a well-structured seismic certification program to reduce potential testing requirements or cover unique mounting configurations. The mounting surface on our NEBS-GR63 Seismic Simulation Test System measures 48 inches by 48 inches. Multiple types of waveforms and field data calculate test input motion to achieve the required response. Our earthquake analysis software ensures extensive, accurate data from each test.

Seismic vibration refers to structural vibration on piping, machinery housings, machine support structures, and bearing housings. This testing is particularly suitable for machinery with rolling-element bearings. These bearings will generally convey both shaft and bearing-related vibrations to the outside of the machine where seismic measurements can be detected.

Team Corporation — Your Trusted Testing Equipment Supplier

By sharing our experience with the test engineers who specify and use your system, we can help maximize performance, reduce costs and accelerate the delivery of your system. Contact us today to get started.

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In addition to our comprehensive testing software and advanced computerized feedback systems, several key features of our Seismic Simulation Test System include:

  • Reliable Servohydraulic Actuator
  • Welded Magnesium Vertical Mounting Platform
  • 48 in2 mounting surface (Vertical and Horizontal)
  • 12 inches (300 mm) static displacement
  • 10.5 inches (262 mm) dynamic displacement
  • 40 in/sec (1 M/sec) velocity
  • Accurate Verteq II Waveform Replication
  • Available as Trunion Mounted Actuator or Separated System

Among the system’s versatile applications is the ability to test the following:

  • NEBS GR-63 Test Requirements
  • Hi Velocity Tests of Heavy Payloads
  • Internet Routers and Switches
  • Optical Switches
  • Uninterrupted Power Supplies (UPS)
  • Telephone Switch Gears
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