CB-605 High-Voltage Capacitance and Dissipation Factor Bridge CB-605 High-Voltage Capacitance and Dissipation Factor Bridge nTransformer ratio arm bridge circuit nHigh-accuracy instrument nDirect readings of capacitance and dissipation factor for 50 or 60 Hz nUp to 70 A sample current nSelectable standard capacitor values of 50, 100, 1000 pF DESCRIPTION FEATURES AND BENEFITS nThe CB-605 High-Voltage Capacitance and Dissipation Direct readings of capacitance and dissipation Factor Bridge is a precision instrument designed for factor (C&DF): easy to balance, no calculation required laboratory, shop or production line testing of electrical other than a decade multiplier. equipment insulation and insulating materials. The bridge nTransformer ratio arm bridge circuit: The bridge incorporates a built-in, synchronous, phase-sensitive null provides high accuracy (0.01%), resolution and detector. sensitivity with a guard terminal that does not require balancing. APPLICATIONS nWide measuring ranges: Unit measures capacitance In determining the quality of high-voltage equipment from 0 to 1.2 mF and dissipation factor from 0 to 100% insulation, capacitance and dissipation factor are among for testing a variety of equipment and materials. the most frequently measured insulating characteristics. nThese two quantities can be measured during assembly of Selectable standard capacitor value: The operator can electrical apparatus, at the time of installation, or as part of select the instrument calibration for the capacitor to be a periodic maintenance program after the equipment is used, either 50, 100 or 1000 pF. placed in service. This test is nondestructive to the insulation and is used for trending and comparison, giving more information than a pass/fail test. The CB-605 is a measuring bridge that is used with an ac power source and a loss-free reference capacitor to form a complete bridge circuit. Testing can be performed at almost any voltage level up to a maximum of 1800 kV, depending on the rating of the equipment under test, the power source and the capacitor. The bridge will also accept a test current of up to 70 amperes maximum from the insulation under test. This gives the operator an extremely wide range of possible applications that can be performed by a single instrument. CB-605 High-Voltage Capacitance and Dissipation Factor Bridge SPECIFICATIONS Sensitivity ±2 ppm per division on the null detector at a test voltage of 1 kV Input when measuring 100 pF on the 100 pF range and using a 100 pF standard Input Power Frequency of Test Voltage: 50 or 60 Hz operation 240/120 V, 50/60 Hz, 10 VA Protection Dimensions (Approx.) The input is protected against high-voltage surges and Instrument in Enclosure specimen failure. 8.25 H x 20 W x 11.25 D in. (210 H x 508 W x 286 D mm) Bridge Circuit Transformer ratio arm bridge Instrument for Rack Mounting 7.5 H x 19 W x 11 D in. Bridge Test Current (190 H x 483 W x 279 D mm) Test Capacitor (Cx): 70 A max. Weight (Approx.) Measuring Ranges C: 0 to 120 pF up to 0 to 1.2 μF, in 13 ranges with a 1, 2, 5, Model CB-605 in Enclosure 10 sequence (Cn = 100 pF) 37 lb (17 kg) DF: 0 to 0.001 up to 0 to 1, in 4 ranges (0 to 0.1% up to 0 to Shipping weight, including cables: 100%) 52 lb (24 kg) Resolution C: 0.001% of range or 0.001 pF on lowest range (0.0001 or 1 ppm with interpolation) DF: 1 x 10-6 on lowest range up to 1 x 10-3 on highest range Cx Accuracy Cn C: 0.01% of range + 0.2 pF up to 0.012 μF, 0.03% of range above 0.012 μF DF: 2% of reading + 0.00002 Cx G Cn Detector Q Built-in, tuned, synchronous, phase-sensitive null detector. The detector controls include: nSynchronization n1000-to-1 gain adjustment nPhasing for C or DF sensitivity CB-605 Capacitance Bridge measures UNGROUNDED specimen (UST) with charging current less than 20 A. ORDERING INFORMATION Item (Qty) Cat. No. Model CB-605 calibrated for 60 Hz 670605 Cx Model CB-605 calibrated for 50 Hz 670605-1 Cn Included Accessories B R Cx G Cn Coaxial leads, 32.5 ft (10 m) [2] 34537 Cx cable end adapter 19883-1 AC supply line cord 17032-7 Instruction manual AVTM670605 Optional Accessories Calibration report CAL-670605 CB-605 Capacitance Bridge measures (must be purchased with the instrument) UNGROUNDED specimen (UST) with charging current greater than 20 A. A complete range of standard capacitors is also available. Please contact factory. Registered to ISO 9001:2000 Reg no. Q 09290 UK UNITED STATES OTHER TECHNICAL SALES OFFICES Archcliffe Road Dover 4271 Bronze Way Valley Forge USA, Toronto CANADA, Registered to ISO 14001 Reg no. EMS 61597 CT17 9EN England Dallas TX75237-1088 USA Mumbai INDIA, Trappes FRANCE, CB605_DS_en_V10 T +44 (0) 1304 502101 T 800 723 2861 (USA only) Sydney AUSTRALIA, Madrid SPAIN F +44 (0) 1304 207342 T +1 214 330 3203 and the Kingdom of BAHRAIN. www.megger.com F +1 214 337 3038 Megger is a registered trademark