Common use of Outstation Clause in Contracts

Outstation. Duplicate Outstation systems shall be provided which can be interrogated by Settlement Instations using independent communications lines. Where separate Outstations are provided each Outstation shall store the main Meters and check Meter data for one or more circuits and where practicable shall be configured identically. Two or more such Outstations storing data from different circuits may be cascaded on to one communication line. In the case of Meters with integral Outstation facilities (ie main Meters or check Meters storing its own data) the cascading onto one communication line shall be limited such that a communication failure is restricted to the loss of main Meter or check Meter data from a maximum of four circuits. The Outstation data shall be to a format and protocol approved by Scottish Settlements. Superseded The Outstation shall have the ability to allow the metering data to be read by instations other than the Settlement Instation provided the requirements of Section 7 of this Code are satisfied. Facilities shall be provided to select a relevant Demand Period from one of the following values:- 30, 20, 15, 10 and 5 minutes, with, in each case one Demand Period ending on the hour. Normally metering data will be collected by the Settlement Instation by a daily interrogation, but repeat collections of metering data shall be possible throughout the Outstation data storage period. A secure supply shall be provided to each Outstation system, with separate fusing for each Outstation. Where a separate modem associated with the Outstation is used, then it shall be provided with a secure separately fused supply. Alternatively, line or battery powered modem types may be used. The Outstation shall provide an alarm output signal to a manned point in the event of a supply failure. 5.5.1 Data storage: Data storage facilities for metering data shall be provided as follows:- 5.5.1.1 a storage capacity of 48 periods per day for a minimum of 10 days for all Demand Values; 5.5.1.2 the stored Demand Values shall be integer values of kW or kvar, or pulse counts, and have a resolution of better than ±0.1% (at full load); 5.5.1.3 the accuracy of the energy values derived from Demand Values shall be within ±0.1% (at full load) of the amount of energy measured by the associated Meter; 5.5.1.4 the value of any energy measured in a Demand Period but not stored in that Demand Period shall be carried forward to the next Demand Period; Superseded 5.5.1.5 where a separate Outstation is used, cumulative register values shall be provided in the Outstation which can be set to match and increment with the Meter Registers; 5.5.1.6 in the event of an Outstation supply failure, the Outstation shall protect all data stored up to the time of the failure, and maintain the time accuracy in accordance with Section 5.5.2; 5.5.1.7 partial Demand Values, those in which an Outstation supply failure and/or restoration occurs, and zero Demand Values associated with an Outstation supply failure, shall be marked so that the Settlement Instation can identify them; 5.5.1.8 to cater for continuous supply failures, the clock, calendar and all data shall be supported for a period of 10 days without an external supply connected; 5.5.1.9 any "read" operation shall not delete or alter any stored metered data; and 5.5.1.10 an Outstation shall provide all of the metered data stored from the commencement of any specified date upon request by the Settlement Instation.

Outstation. Duplicate An Outstation systems System shall be provided which can be interrogated by transfers data to and receives data from a Settlement Instations using independent communications linesInstation. Where one or more separate Outstations are provided each Outstation shall store the main Meters and check Meter data for one or more circuits and where practicable shall be configured identicallyup to a Maximum Aggregated Capacity of 100 MVA. Two or more such Separate Outstations storing data from a number of different circuits may be cascaded on to one communication line. In the case of circuits, and Meters with integral Outstation facilities (ie main Meters or check Meters storing its own data) the cascading onto shall be capable of utilising one communication line shall be limited such that a communication failure is restricted to the loss of main Meter or check Meter data from a maximum of four circuitsline. The Outstation data shall be to a format and protocol approved by Scottish Settlementsthe SSA or its Agent. Superseded The Outstation shall have the ability to allow the metering data to be read by instations other than the Settlement Instation provided the requirements of Section 7 of this Code of Practice are satisfied. Superseded For the purpose of transferring stored metering data from the Outstation to the Settlement Instation, a unique Outstation identification code shall be provided. Facilities shall be provided to select a relevant Demand Period demand period from one of the following values:- 30, 20, 15, 10 and 5 minutes, with, minutes with in each case one Demand Period demand period ending on the hour. Normally metering data will be collected by the Settlement Instation Instations by a daily interrogation, but repeat collections of metering data shall be possible throughout the Outstation data storage period. A The Outstation System supply shall either be from a secure supply shall be provided to each Outstation systemor from a measurement VT, with separate fusing for each Outstation. Where a separate modem associated with the Outstation System is used, then it shall be provided with a secure separately fused supplysupply either from a secure supply or from a measurement VT. Alternatively, line or battery powered modem types may be used. The Where a measurement VT source is used and the Outstation System is storing data for more than one circuit, a VT selection relay scheme involving each circuit shall be provided. For Outstations separate from the Meters, preferably the Outstation shall provide an alarm output signal be able to continue all normal functions for a manned point period of 120 hours after a supply failure. Outstations not providing this facility must in the event of a supply failurefailure transmit an alarm signal to a manned point. The Outstation shall not convert PARh metering data to vars. 5.5.1 Data storage: Data storage facilities for metering data shall be provided as follows:-Storage 5.5.1.1 (i) a storage capacity of 48 periods per day for a minimum of 10 20 days for all Demand Values;. 5.5.1.2 (ii) the stored Demand Values shall be integer values of kW or kvar, or pulse counts, and have a resolution of better than ±0.1% (at full load);; Superseded 5.5.1.3 (iii) the accuracy of the energy values derived from Demand Values shall be within ±0.1% (at full load) of the amount of energy measured by the associated Meter; 5.5.1.4 (iv) the value of any energy measured in a Demand Period but not stored in that Demand Period shall be carried forward to the next Demand Period; Superseded; 5.5.1.5 (v) where a separate Outstation is used, cumulative register values shall be provided in the Outstation which can be set to match and increment with the Meter Registers; 5.5.1.6 (vi) in the event of an Outstation supply failure, the Outstation shall protect all data stored up to the time of the failure, and maintain the time accuracy in accordance with Section clause 5.5.2; 5.5.1.7 (vii) partial Demand Values, those in which an Outstation supply failure and/or restoration occurs, and zero Demand Values associated with an Outstation supply failure, shall be marked so that the Settlement Instation can identify them; 5.5.1.8 (viii) to cater for continuous supply failures, the clock, calendar and all data shall be supported for a period of 10 20 days without an external supply connected; 5.5.1.9 (ix) any "read" operation shall not delete or alter any stored metered data; and 5.5.1.10 (x) an Outstation shall provide all of the metered data stored from the commencement of any specified date upon request by the Settlement Instation.