No, the power sensors are internal.

The problem is most likely that one of your external sensors has a crossed wire. Follow this procedure to test the sensors: 1. Unplug all of the sensors and check the "Remove all unplugged devices" check box on the Display page. 2. Plug in one sensor and wait for it to be detected. 3. If the sensor works, leave it plugged in and plug in another sensor. 4. If the sensors stop responding, the last sensor to be plugged in is faulty. If your unit is under warranty, call support for a replacement.

The test alarms function can be used to turn the buzzer off remotely. The following steps will lead you through this process: 1. Go to the Alarms page. 2. Scroll down to the Test Alarms section. 3. Pick one of the internal sensors from the Sensors drop-down box. 4. From the Alarm State drop-down, choose Buzzer. 5. Select Clear from the Trap Type drop-down. 6. Click on the Test button. 7. The buzzer should turn off in a few seconds.

For R-Series units the MIB can be found in two places. In the header of the units web page, under Alternate Formats, is a link to the MIB. A copy of the MIB is also included in the firmware zip file of version 2.53 and higher.

Check the camera IP address and camera model on the R-Series unit's Configuration page. If the camera model number and IP address are correct, you may need to update your camera to the latest firmware.

Most R-Series units have field-upgradeable firmware. The Satellite Power Monitoring Plus (RSS) units function as external sensors and do not contain their own firmware, therefore they are not field upgradeable.

Geist has the largest in-house engineering department in the industry. Geist’s in-house engineering department includes mechanical, electrical, conformance, board layout and software specialists. The testing lab at Geist is authorized to conduct UL® testing on Geist products to 60950 IT equipment standards as part of the UL® Data Acceptance Program. Our software specialists can create software for new or custom products and deploy directly to production to reduce lead times. Geist also has an in-house team responsible for embedded circuit design, which allows for faster turnaround on custom applications requiring circuit boards. Geist’s engineering team is dedicated to providing the highest quality products and service available in the industry. Geist invests in continuous improvement. The Geist Metalworks division allows us to punch, bend and paint our own metal products. This allows Geist to reduce already short lead times by eliminating scheduling conflicts with suppliers. The Geist Metalworks team also helps reduce the lead time on custom units, making products available to the customer faster than anyone else in the industry.

Yes, some configurations can be purchased without an internal circuit breaker. All Geist’s PDUs require an appropriately sized branch circuit breaker in the building installation. Branch circuit breakers should be sized according to the PDUs namplate rating, and electrical code requirements. To comply with the NEC the circuit breaker in the building installation should have a trip current rating that is 25% higher than the PDU’s nameplate. For example, a 16A rated PDU requires a 20A circuit breaker.

Geist’s cord-connected PDUs carry a nameplate current rating that is 80 percent of the branch circuit rating listed in the catalog specification. The nameplate current rating has been lowered in order to comply with UL®/NEC requirements. Geist PDUs are UL® Listed as Information Technology Equipment to the UL® 60950 Standard. UL® 60950 requires that the attachment plug of Listed Information Technology Equipment shall be rated not less than 125 percent of the Rated Current of the equipment at the nominal system voltage range as defined by the configuration of the plug. This clause in UL® 60950-1 is based on the requirements of the National Electrical Code (NFPA-70), which state that branch circuit conductors and overcurrent protection devices shall be sized to carry 125 percent of the continuous load and 100 percent of the non-continuous load on the circuit breaker. Due to this UL®/NEC requirement, the nameplate current rating of a Geist PDU is 80 percent of the maximum current rating of the branch circuit used to power the PDU. Most of Geist’s customers base their PDU input current specifications on the branch circuit ratings; consequently, the catalog lists the ratings of the branch circuit that the PDU is intended to be connected to. In addition to the branch circuit rating, it is important to consider the nameplate PDU rating which includes the 80 percent de-rating factor required by UL®/NEC when calculating PDU requirements.

20A breakers in a 30A unit allow maximum flexibility of load connection without nuisance tripping. The receptacles in a 30A PDU are divided into two independent groups. A 30A PDU distributing to 15A or 20A receptacles must be broken down into either 15A or 20A circuits internally. By opting for 20A internal circuits, PDU circuit balance is less critical. One circuit may be loaded to greater than 15A. This would not be possible if each breaker were rated at 15A.

Heat is measured in BTUs and power is measured in Watts. Almost all electrical energy used in computing is converted to heat. A computer power supply can be as low as 80 percent efficient. This means that for every 100 Watts it draws, 20 Watts may be converted directly into heat without ever being used by the computer. As the computer processes information, the rest of the power is dissipated throughout the system as heat. Since all power can be counted as heat, adding the Watt ratings of all equipment in a cabinet will give a relatively 1:1 relationship to heat generated. Example: 40 servers x 300 Watts each = 12,000 Watts (12kW) heat. Also, Watts can be converted to BTUs by multiplying Watts by 3.412.

1) Less wire under the floor improves airflow and reduces wiring confusion. A 20A 3-phase installation contains five wires where the equivalent single phase system would require nine wires (3x3). 2) Fewer whips to pull saves you time and money. A 3-phase system has one whip for the electrician to bring to the cabinet where the equivalent single phase system would have three whips. This saves both material and labor cost. 3) Simplified load balancing reduces technician installation and troubleshooting time. With all 3 phases available in a single cabinet, load balancing can be achieved at the cabinet level where similar type equipment is often found. In a single-phase system, a minimum of three cabinets may need to be examined to balance the same load.

No, the power sensors are internal.

A Volt is the standard measure of electrical potential and a fixed value for every circuit. Voltage is measured with respect to a reference point (usually between the two respective conductors of the circuit). Voltage is analogous to pressure in a water pipe. Higher pressures, or higher voltages, allow more energy to flow within a given amount of time for a given wire size. Standard voltages present in most data centers are 120V and 208V in the U.S., and 230V in continental Europe. Some newer U.S. data centers are being designed to utilize 230V.

RMS stands for Root-Mean-Squared. It is used in conjunction with AC Volts and AC Amps to express an average value. A true RMS calculation takes into account the shape and phases of the wave forms being delivered to a circuit. AC voltage and current are ever-changing values. Using RMS measurements provides useful values.

DCIE stands for Data Center Infrastructure Efficiency. DCIE is IT Power divided by Total Facility Power, expressed as a percent (%). DCIE is the inverse of PUE.

PUE stands for Power Use Effectiveness. PUE is a measure of how efficiently power is being used in a data center, and is becoming the standard benchmarking metric in most data centers. PUE is determined by dividing the total facility power use (Building Watts) by the IT equipment load (IT Watts). The power distribution within the building has several points where losses occur (UPS, transformers, wire runs), so the ideal place to measure the IT power load is at the cabinet level within the power strip. These readings can be collected and aggregated to determine the IT power load. Once an initial assessment of PUE has been made, efforts can be made to improve PUE by applying various methods to improve operational efficiencies in the data center.

An absolute must in mission-critical applications, the general concept behind power redundancy is to connect critical equipment to two independent power sources. If one line of power is interrupted, the second is able to power the critical equipment. This is accomplished in the following. First, equip the cabinet with two PDUs, each of which is capable of handling the power requirements of the entire cabinet. Plug one PDU into the first power source and the other into the alternate. Plug each piece of equipment into both (most data center equipment today has multiple power supplies as a fail-safe).

The L22 plug has been approved for use @ 230/400V by UL. The nameplate rating of the PDU identifies the 230/400V rating in addition to labeling by the plug.

The IEC 309 Pin and Sleeve connector is more commonly used in European applications, however it is common in North America as well on devices rated at 60A and higher.

On a 3 phase PDU outputting 120V the calculation would be Volts x Amps (80%) x 3 (# of independent conductors). For example, a 30A 3 phase unit outputting 120V would be 120 x 24 x 3=8.6kW. If the PDU is outputting 208V, the calculation would be Volts x Amps (80%) x SQRT(3). The SQRT(3) is used as line voltage for 208V output is derived from using two hot conductors. For example, a 30A 3 phase unit outputting 208V would be 208 x 24 x SQRT(3)=8.6kW.