Voltage Flicker Limits Sample Clauses
Voltage Flicker Limits. Loading Frequency* On MPS Primary Lines At Customer’s point of connection to MPS facilities At Customer’s Utilization Location* 1 starts per Hour or greater 3.0% 4.0% 6.0% 5 starts per hour or greater 1.7% 2.5% 3.5% 20 starts per hour or greater 1.0% 1.5% 2.5% *This level is only shown for reference and is not an MPS limit. The Flicker at the customer’s connection to MPS’ facilities is pertinent when other customers are served from the same transformer. The other customers will be subjected to the flicker levels seen at the common connection point. Its location is typically at the secondary terminal of the transformer or secondary pedestal. The limits for this situation are defined as midway between visibility and the borderline of irritation. The last column shows recommended flicker limits for other utilization location of the MPS electrical system. A good electrical design will hold voltage flicker at the utilization points to the levels shown or better. The limits listed are just below the borderline or irritation. It is the customer’s choice what the level of voltage flicker they will impose upon their facilities. Voltage sag limitations are normally less of a constraint than voltage flicker. MPS uses ITI Voltage Tolerance Envelope (CBEMA Curve) as a guideline to evaluate effects of voltage sags. Equipment should tolerate voltage sags to 80% of the nominal service voltage for up to ten seconds and to 90% continuously according to the voltage tolerance limits. THIS PA€E IS INTENTIONALLY LEFT BLANH FOR DOUBLE-SIDED COPYIN€/PRINTIN€ SECTION 800 OVERHEAD SECONDARY SERVICE MPS will supply overhead secondary service, 600 volts or less, at the voltages and under the conditions specified in other sections of MPS’ Electric Services Rules and Regulations. The service entrance location will be specified by MPS. This section includes information on distribution transformer size, overhead service drop, and connections to the Customer's premises or equipment. Metering and Customer equipment requirements are covered in other sections of these rules and regulations. The requirements of this section apply to all residential, commercial, and industrial Customers.