Type Tests. Cables shall be subjected to all type tests specified in IEC 60502-1; when type tests have been successfully performed on a type of cable covered by this standard with a specific conductor cross-sectional area and rated voltage, type test certificate will be accepted as for cables of the same type with other conductor cross-sectional areas and/or rated voltages, provided the following three conditions are all satisfied:
Type Tests. In accordance with the requirements of IEC 60137 plus:-
Type Tests. Type tests shall be conducted at Contractor’s or Subcontractors’ sites, unless another site is previously approved in writing by Authority. Contractor shall provide type test certificates certifying that Contractor followed the procedures reviewed and responded to by Authority as part of its review of the Testing and Commissioning Program.
Type Tests. One transformer of each type shall be subjected to the following type tests. Impulse-Voltage Withstand Test - One transformer of each outdoor design, rating and voltage ratio shall be tested in accordance with IEC 60076-3: 2000, Clauses 12 and 13. Neutral terminals shall be connected as in service, i.e. neutrals of fully insulated windings shall be left isolated. Approved means shall be provided to prevent voltages in excess of 75% of the design impulse voltage of the associated winding from appearing at the line terminals not under test. Except where modified below at least one terminal of the winding or windings not under test on the same limb as the winding under test shall be solidly earthed. The transformer tank shall be efficiently connected by low impedance copper strip to the impulse generator earth point and the whole well earthed. Arcing horns, if fitted to the transformer bushings, shall be adjusted to the maximum setting permitted by the bushing design or shall be removed. Temperature Rise Test - One transformer of each rating and voltage ratio with is own tank, voltage control apparatus, and cooling apparatus, if any, shall be tested in accordance with the provisions of IEC 60076. Unless otherwise agreed with the Engineer the temperature rise test shall be carried out with the transformer on normal ratio. Capacitance Test - The capacitance between windings and to earth shall be measured by an approved method. Short Circuit Test - When required by the Engineer a full voltage short-circuit test shall be performed on a typical transformer. With the high voltage winding energized at full voltage from a supply source which will maintain this voltage under fault conditions, a short-circuit shall be applied to the low voltage terminals and held for 5 seconds in accordance with the Specification Clause headed "Duty Under Fault Conditions". It shall be demonstrated that the transformer has sustained no damage as a result of this test. A separate price for this test shall be entered in Schedule 'J2'. Noise Level Test - Noise levels shall be measured with the transformer on no load at normal voltage and frequency. Where a transformer has more than one rating, measurements shall be repeated with the cooling system corresponding to each rating in operation. All readings shall be made at the "A" weighting using a precision sound level meter conforming to IEC.61672. The calibration of this instrument shall be verified before and after the tests. The backgrou...
Type Tests. In accordance with the requirements of IEC 60214, the power frequency withstand voltage test is to be applied between electrically adjacent contacts; the test shall be carried out at half normal service voltage.
Type Tests. Type tests shall be in accordance with the relevant IEC recommendation or other applicable standard. Tests shall also be carried out to prove composite relay systems, eg differential relays in respect of stability, sensitivity, operating time, settings and setting ranges under all fault conditions. These shall be performed in a manner to simulate working conditions as closely as possible, utilizing equipment assembled as in service and including resistance not less in value of any external leads associated with the equipment, as connected at site.
Type Tests. Type tests shall be submitted by the successful Respondent(s) when changes are made to either the transformer design,, manufacturing process, component(s) or raw material. The type tests for temperature rise, BIL, RN, sound level and short circuit shall be carried out on representative unit(s) on order when requested by Toronto Hydro unless Certified Test Reports are made available from other units whose equivalence with regard to the required tests are acceptable to the Toronto Hydro. The Respondent(s) must submit such Certified Test Reports for approval by Toronto Hydro upon Toronto Hydro’s initial order of the transformer. Respondents shall include in their Proposal, in addition to the unit prices, the cost for performing each of the type tests noted above in the event that the Certified Test Reports results, based on representative units, prove unacceptable.
Type Tests. One fused isolator of each type and rating shall be subjected to type tests to prove compliance with IEC 62271-102 and 282. These tests must include the following:- Impulse withstand voltage power frequency voltage including wet test Temperature rise Breaking tests Tests for time/current characteristics Tests of strikers (if applicable) Mechanical endurance SCHEDULE A ITEMS OF THE CONTRACT FOR THE PURPOSES OF PAYMENT AND TAKING OVER Item No. Description Quantity 1. 36 kV, 200 A, 8 kA, 3-phase vertically Pole Mounted Open Type silicon rubber Drop Out Fused Isolators, with clamp connectors and equipped with brackets and steel cross-arm. 150 Set
Type Tests. In accordance with the requirements of IEC 62271. Details of the rate of rise of recovery voltage to which the circuit-breaker will be subjected during short-circuit testing shall be submitted to the Engineer for approval. The Engineer may require, in addition, any of the following tests to be carried out, the details of which will be agreed between the Engineer and the Contractor:- - Earth fault interruption tests - Out of phase switching tests to IEC 60267 - Short line fault tests - Capacitance switching tests - Small inductive breaking current switching tests - Tests under environmental conditions
Type Tests. Lightning impulse withstand tests shall be made on cable boxes or disconnecting xxxxxxxx where these have not been tested as part of the apparatus to which they are to be connected in service. The test conditions and values shall be those specified for the apparatus of which they are to form part.
