SS-779E-1 Datasheet | Servo-TEK

SERVO-TEK ® SERVO-TEK PRODUCTS PANY, INC. DC Tachometer Generators .servotek. RC-700 rev. 2 SERVO-TEK ® 1086 Goffle Road - Hawthorne, NJ 07506 - sales@servotek. Phone (973) 427-3100 - Fax (973) 427-4249 - .servotek. Technical Data An Industry Standard for over fifty years. A Servo-Tek DC tachometer generator provides a convenient and economical means of converting rotational speed into an isolated analog voltage signal suitable for remote indication and control. While this catalog contains information on our most popular models, we also manufacture countless special tach generators. Most of our DC tach generators are housed in aluminum casings protected in accordance with Mil-C-5541 or Mil-A-8625 or high performance plastics. Alnico permanent magnets are used. Armature shafts are stainless-steel, and rotate on fully shielded stainless-steel ball bearings. mutators are manufactured from an alloy containing at least 90% silver. Armature laminations are wound with Isomid insulated wire, over Teflon slot insulation. The entire armature is then baked, resulting in a NEMA Class H insulation system. Linearity at any speed is better than 0.1% of the output at that RPM. All Servo-Tek tachometer generators operate in either rotational direction. That direction can be determined by output voltage polarity. Output (in either direction) is held to a tolerance of 0.25% of the average output. Linearity Bidirectional Operation Construction SB-740A-2 Optimum brush and mutator bination gives 0.1% stability. Highly stable output gives no evidence of long-term drift. Servo-Tek DC tachometer generators are factory tested with an AC potential of 1250 volts RMS applied for one second between (either) terminal and shaft. E-Series units are tested with 500 volts. DA-7533A-2 Stability Breakdown Voltage The ripple RMS value will not exceed 3% of the DC value at any speed in excess of 40 RPM on standard units. On the low ripple units, the ripple RMS value will not exceed...