The Electric Power Club Handbook of Standards: Electric Power ApparatusElectric Power Club, 1925 - 254 páginas |
Palavras e frases frequentes
60 cycles A. I. E. E. Rule alternating current ambient temperature Amended American Standard-Approved 7-9-1925 amperes Angular Displacement apparatus is apparatus applied armature buses cent CHIG CLASS OF INSULATION coils COMMUTATING POLES Contactor device diagrams Dielectric Test direct current direction of rotation Electric Power Club frequency full load H1 H2 Additive H1 H2 Subtractive H2 Additive Polarity H2 Subtractive Polarity high voltage horsepower incl induction motor Kv-a Limits machine machine diagram MANUFACTURING PRACTICE maximum MICHI name plate normal voltage NOTE I-See Rule NOTE I-The oil circuit breakers operation overload panel Polarity X1 X2 power factor power transformers pulley purpose motors rated voltage RATING STANDARDS Relay REPULSION MOTOR resistance resistor RHEOSTAT rotor RSITY SHUNT FIELD CONNECTIONS SITY SPLIT PHASE Standard voltages subscript numerals Subtractive Polarity X1 switchboard switching equipment taps temperature guarantees temperature rise test voltage three phase tion torque UNIV UNIV Voltage Ratings volts wiring
Passagens conhecidas
Página 12 - Adjustable-speed motors, in which the speed can be varied gradually over a considerable range, but when once adjusted remains practically unaffected by the load, such as shunt motors designed for a considerable range of speed variation.
Página 7 - A waterproof machine is a totally enclosed machine so constructed that a stream of water from a hose (not less than 1 in.
Página 19 - Controller: A device or group of devices that serves to govern, in some predetermined manner, the electric power delivered to the apparatus to which it is connected.
Página 21 - Overload protection (overcurrent protection). Overload protection is the effect of a device operative on excessive current, but not necessarily on short circuit, to cause and maintain the interruption of current flow to the device governed.
Página 124 - Points of Application of Voltage. The test voltage shall be successively applied between each electric circuit and all other electric circuits and metal parts grounded.
Página 25 - A device which serves to govern the operation of contactors and auxiliary devices of an electric controller (American Standard).
Página 39 - Undervoltage or lowvoltage protection is the effect of a device operative on the reduction or failure of voltage to cause and maintain the interruption of power in the main circuit.
Página 85 - In general the leads shall be distinguished from one another by marking each lead with a capital letter followed by a number. The letters to be used are H for high voltage leads, X for low voltage leads and Y for tertiary winding leads. The numbers to be used are 1, 2, 3, etc. NOTE I — By "tertiary winding...
Página 41 - ... in the primary circuit, are represented with acceptable accuracy in the secondary circuit. An instrument transformer may be either an instrument current transformer or an instrument potential (voltage) transformer. The terms instrument current transformer and instrument potential (voltage) transformer are commonly abbreviated to current transformer and potential transformer.
Página 59 - Tests 112.2-83 (a) Many machines are operated on a cycle of duty which repeats itself with more or less regularity. The heating- of machines operating under such conditions is equivalent to a continuous run for a certain specified time. The standard duration of load tests, or time ratings, for machines operating on such ratings shall be as follows: 5 min. 10 min. 15 min. 30 min. 60 min. 120 min.