<p>Document Number: ECP 11-0209</p><p>Version: 3.0</p><p>Date: 30/01/2017</p><p>INTERLOCKS TEST FORM</p><p>Substation Name Substation Number Circuit </p><p>General Data</p><p>Interlocking circuit diagram number </p><p>Mechanical interlocks ( or n/a)</p><p>Circuit Breakers</p><p>Check keys and locks with interlocking schematic Circuit breaker number Keys trapped in intermediate position and only released in fully open or fully closed position as appropriate to the particular interlock</p><p>Isolators </p><p>Isolator number Check keys and locks and their function with interlocking circuit diagram Keys trapped in intermediate position and only released in the fully open or fully closed position as appropriate to the particular interlock Subject to the energising of the magnetic bolt, bolt release requires the application of all keys</p><p>Earth Switches </p><p>Earth switch number Check keys and locks and their function with interlocking circuit diagram Keys released only in the fully open or fully closed position Removal of any key prevents operation</p><p>Maintenance Earthing Devices</p><p>Maintenance earthing device number Check keys and locks and their function with interlocking circuit diagram All keys required for operation</p><p>Key Exchange Boxes Key exchange box ID Check keys and locks and their function with interlocking circuit diagram</p><p>Excess Keys </p><p>Confirm that not more than the correct number of keys are available</p><p>Electrical interlocks ( or n/a)</p><p>Local Auxiliary Switch Chains</p><p>Check to circuit diagram number…………………… Each alternative chain of auxiliary switches when closed permits operation, and opening of any one contact prevents operation</p><p>Auxiliary Switch Chains for Parallel Operation</p><p>Check with interlocking circuit diagram Each alternative chain of auxiliary switches when closed permits operation, and any one contact open prevents operation</p><p>Electrical Bolts Operational Tests </p><p>Check operation of all bolts at standing batter volts</p><p>Comments</p><p>Certification ()</p><p>All tests have been completed satisfactorily</p><p>Contractor Commissioning Engineer (if applicable)</p><p>Organisation Name</p><p>Date Signature</p><p>UK Power Networks Commissioning Engineer</p><p>Name Signature Date</p>