Document zdBR50RrQ3LZ0dY3QzN91ebZg

t TECHNICAL DATA SHEET pyrocLor TRANSFORMER ASKAREL BY Pyroclor 5 is a fire resistant transformer coolant in the Askarel class. A new Monsanto transformer coolant Inerteen* 70/30, introduced in 1967, achieved remarkable suc cess in the U.S.A. Because of this Monsanto in Europe has started manufacture of this product at the Newport U.K. plant. This new fluid is called : Pyroclor 5. Pyroclor 5 is now the recommended fluid for all Pyroclor transformers and has the following important features : Better cost performance from lower weight per gallon. Same compatibility with materials of construction. Higher relative permittivity. Similar viscosity over the normal temperature range of transformer operation (--5" to 4-90 C). The Pyroclor synthetic transformer coolant at present on the European market is still available for cases where viscosity at unusually low temperatures is an important factor. This fluid will be known simply as Pyroclor. Pyroclor 5 incorporates all the advantages of previous Pyroclor ; Maximum fire protection No special fire equipment needed No maintenance No siting limitations Low noise level Low power loss High impulse level Gas scavenger to absorb any free hydrogen chloride should transient arcing occur ' Trade name of Westlnghouse Corporation. 05933 TOWOLDMON0043755 WATER_PCB-00028224 Typical Properties In terms of physical, chemical and electrical properties Pyroclor 5 and Pyroclor are very similar but detailed properties are listed for comparison in Table 1. TABLE 1 A Comparison of Typical Physical, Chemical and Electrical Properties of Pyroclor 5 and Pyroclor (This table is not a specification) Property Test Method Pyroclor Pyroclor 5 Physical Description ASTM D1702 Colour (APHA) Density at 20 C (kg/m3) Density at 100 C (kg/m3) Coefficient of expansion 20-100 C (deg. C-') Viscosity at 20 C (cSt) Pour point (C) Refractive index at 25 C Chemical Fire point ASTM D1702 BS 733 BS 733 Calculated from density BS 188 IP 15 ASTM D1807 ASTM D92 Inorganic chlorides (ppm) Neutralization number (mg KOH/g) PPO content {%) Stability test (Details follow) Water content (ppm) Electrical Dielectric strength at 25 C 4 mm gap (kV) .. withstand .. breakdown Dissipation factor at 50 Hz, 1 kV/mm (%). ,.at25C ... at 100 C Resistivity at 500 V/mm, 1 minute (Tftcm)... at25C ... at 100 C ASTM D1821 Monsanto ASTM D1701 Monsanto ASTM D1533 BS 148 ASTM D924 ASTM Dll69 Limpid, mobile liquid 40 1556 1468 0.000743 Limpid, mobile liquid. 40 1520 1436 0.000732 21 -- 34 1.6147 26 -- 32 1.6158 None to boiling point 0.05 0.004 0.2 Pass 30 None to boiling point 0.05 0.004 0.2 Pass 30 40 for min. >70 0.5 5 10 2 40 for 1 min. > 70 0.5 5 10 2 0025934 TOWOLDMON0043756 WATER_PCB-00028225 Stability (Corrosion) Test Description A sample of the Pyroclor is heated in darkness for 6 hours at a temperature of 210 C. with a prepared piece of aluminium foil. At the end of this period, the appearance, colour, inorganic chlorides and neutralization number of the sample of Pyroclor are determined. The piece of aluminium foil is examined for changes in appearance and its weight loss is determined. Results The values in the following table must not be exceeded for the sample of Pyroclor to pass this test. TABLE 2 Property Aluminium foil Weight loss (g) Change in appearance Pyroclor sample Colour (APHA) Inorganic chlorides (ppm) Neutralization number (mg KOH/g) Test method -- Visual ASTM D1702 ASTM D1821 Monsanto Value 0.0 None 200 (max) 5.0 (max) 0.01 (max) 3 002&935 J TOWOLDMON0043757 WATER_PCB-00028226 A Comparison of the Compatibility of Transformer Insulating Materials with Pyroclor In past years we have accumulated a considerable amount of data on the compatibility of various types and brands of transformer constructional materials with Pyroclor. In order to test whether this information is also valid for Pyroclor 5 we have run sidc-by-sidc tests with 5 different materials. The details of these tests are as follows : Ageing conditions : Concentration : Testing conditions: 7 days at 100 C As given in the table 3 Temperature 100"C; dissipation factor measured at a fre quency of 50 Hz and a stress of 1 kV/mm; resistivity measured at a stress of 500 V./mm after 1 minute. TABLE 3 Material Concentration Pyroclor Pyroclor 5 Dlsslp- Resistatlon Ivlty factor (Tticm) </) Disslp- Resistation Ivlty factor (Tt?cm) </> 'Varnite' core insulation 64 cm2 in 150 cm3 5.4 2.9 5.5 2.8 ML enamel wire, 0.116" dia. 14.5 cm2 in 150 cm3 3.3 4.0 2.3 5.4 Grade K 'Elephantide' pressboard, 0.375" thick 3 % w/w 6.3 4.0 4.0 5.6 'Nebar PR', 0.125" thick, smooth grade 0.4 % w/w 35.4 0.20 36.2 0.27 SRBP tube, 0.7" dia. 1 % w/w 11.6 1.0 13.5 1.9 From these tests we conclude that compatibility data obtained for Pyroclor are equally valid for Pyroclor 5. 0*5936 TOWOLDMON0043758 WATER_PCB-00028227 Kinematic Viscosity A comparison of the kinematic viscosity of Pyroclor 5 and Pyroclor is shown in table 4. TABLE 4 Temperature CC) -- 30 -- 20 -- 10 0 + 10 20 30 40 50 60 70 60 90 100 Pyroclor ca. 16 000 1 800 350 100 42 21 12.3 7.8 5.4 3.9 3.0 2.4 1.98 1.70 Kinematic viscosity (cSt) Pyroclor 5 Typical mineral oil ca. 60 000 4524 655 162 57 26 15 9.4 6.4 4.6 3.4 2.7 2.2 1.86 2 500 750 270 118 62 33 21 14 9.7 7.2 5.5 4.3 3.4 2.8 Vapour Pressure A comparison of the vapour pressure of Pyroclor 5 and Pyroclor is shown in Table 5. TABLE 5 Temperature CC) 40 60 80 100 120 140 160 180 200 220 Vapour Pressure (torr) Pyroclor Pyroclor 5 <1 <1 21 54 12 9 27 20 55 41 105 79 186 141 322 242 527 397 In the above table the values at the lower temperatures have been obtained by extrapolation. This procedure was adopted to overcome inherent difficulties in the measurement of low vapour pressures of mixtures of liquids. 5 0025937 | TOWOLDMON0043759 WATER_PCB-00028228 Density A comparison of the density of Pyroclor 5 and Pyroclor is shown in Table 6. Temperature (C) 0 10 20 30 40 50 60 70 80 90 100 TABLE 6 Density (kg/m9) Pyroclor Pyroclor 5 1578 1567 1560 1545 1534 1533 1512 1501 1490 1479 1468 ' 1541 1530 1520 1510 1499 1488 1478 1468 1457 1446 1436 Safe Handling of Pyroclor Pyroclor 5 and Pyroclor are made from blends of chlorinated hydrocarbons and skin contact should be avoided. For detailed instructions on handling of Pyroclor 5 please see our leaflet Safety with Pyroclor . Monsanto Europe S.A. 1, Place Madou, Brussels 3 Monsanto Chemicals Ltd. 10-18 Victoria Street, London S.W.1 The information In this bulletin Is, to our best knowledge, true and accurate, but all recommendations or sugges tions ere made without guarantee, alnce the conditions of use are beyond our control. Monsanto disclaim any liability Incurred In connection with the use of these data or suggestions. Furthermore, nothing contained herein shall be construed es a recommendation to use any product in conflict with existing patents covering any material or Its use. Publication : 11 15 (E) M.E.1 (11/69) (Published by : Monsanto Europe S.A. 1, Plaoe Madou, Brussels 3, Belgium) 6 TOWOLDMON0043760 WATER_PCB-00028229