ROSS ENGINEERING CORPORATION
ROSS ENGINEERING CORPORATION of Campbell, California, designs, tests and manufactures High Voltage Relays, High Voltage Probes, and High Voltage Voltmeters.
- (408) 377-4621
- info@rossengineeringcorp.com
- 540 Westchester Drive
Campbell, CA 95008
United States
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product
HV Probes & Multimeters
B-1010, B1010-A, B-1012, B-1012-A
HV Probes and Voltmeters for oscilloscopes, DVMs, recorders. HV DC, AC & Wideband DC-10MHz. Safety probes for any scope, digital display or recorder. Also available complete with large 4½ digit display 0.01% to 5% DC/AC accuracy digital voltmeter, with safety handles for OSHA recommended personnel clearances. With attached or separate digital display or multimeter 0.00001V to 400kV. HV Digital Multimeters. Wideband DC-10MHz. VMD2A 4½ digit portable meter has accuracies to 0.01% DC, 0.1% 50/60Hz, 3% DC-1MHz, 3dB to 10MHz. True RMS, Avg, True +PK, -PK, PK to PK, 0.2 microsecond, 1/2 sine single pulse capture & hold. 0.00001V - 1000V DC or PK AC and for use with HV Probes to 400kV and Voltage Dividers to 1,000,000V. Has 2V output to scope, recorder. To 1000kV with HV divider, DC-10MHz.
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HV Power & Transient Isolators
B-1020-C
These supply 120V or 240V AC continuous power for equipment that must operate while at a high voltage to ground or power source. For example, a fiber optic transmitter at the HV level for waveforms to be received and measured or recorded by grounded instrumentation might be powered by an isolation transformer secondary to primary either insulated by potting, oil or air. The low dielectric constant of air insulation provides lower capacitive coupling between the secondary and the primary or ground than would solid or oil insulation. The lower capacitance provides better isolation both at line frequency and especially at high frequency voltages such as lightning or switching transients.
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HV Spark Gaps
B-1015
*Spark gaps are enclosed in dust tight transparent enclosures with replaceable non-melting carbon spheres, up to 88kV PK.*Above 88kV, open style with hollow aluminum spheres is standard.*Applications for these units include over-voltage limiting, voltage measurement, capacitor discharge, and pulse forming.*Horizontal unit housings are removable.*Vertical unit housings are not removable.*Micrometer Vernier adjustment is standard for maximum accuracy on most models. Economy units without micrometer Vernier adjustment are available as an option.*Insulation to ground is available at standard and optional levels.*Spark gaps to 370kV, with motor operation available.
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HV Test Load Systems
B-1025-1
Design and manufacture of electronic and electromechanical devices and systems for our customers' special applications has been Ross Engineering Corporation's specialty for 44 years. Among these devices are our High Voltage Test Loads and Resistance/Capacitance Networks designed to simulate radar, communication, and television transmitter loads for testing up to 300kV DC or AC and 200kW. For example, one Test Load System required 4 separate simulated load networks to complete an 8kV, 14kV, 24/6kV, and 34kV high voltage testing system.
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HV Voltage Dividers
*DC up to 10MHz*1kV to 1,200kV DC or PK AC*To 1,875kV Impulse*To ±0.01% DC Accuracy Accredited*To ±0.2% AC Accuracy (50/60Hz) Accredited*To ±3% DC-1MHz Wideband*±3dB 5 to 30 MHz*Compact & Lightweight*For Oscilloscopes*For Recorder*For Digital Multimeters*Very Partial Discharge/Low Corona*Very Low Phase Shift*Resistive*Capacitance*Compensated Wideband*Indoor & Outdoor*Electronic and Power Class*Match Wideband Differential*High Voltage Power Quality Instrumentation
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HV Reed Relays
B-1001-H
*5kV to 15kV Peak Test*3A Continuous*50VA Max Interrupt*NO, NC, DT, Single & Multi-Pole*Safety Encapsulation*HV Leads Available*Compact *Long Life*High Vibration / Shock Resistance*Maximum Creep distance between HV & Actuators Terminals *Tapped base, Turret or Hook terminals, PC Board mounting, Quick disconnect or HV leads available
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Hi-Z HV AC Voltmeters
B-1013
*25kV, 50kV or 100kV Meter with integral line to ground Probe*Phasing or line to line with additional Probe*Optional 6ft or 9ft Collapsible Hotsticks*Voltage source for testing Voltmeters and Probes*Optional test point contamination indicating Megmeter®*High voltage cable clamps or hooks*Heavy duty carrying case
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Hi-Z HV Safety Voltmeters
B-1013-4
These Hi-Z® HV Safety Voltmeters are for Power Lines, Electric Cars, Electric Trolley and other High Voltage AC & DC detection and measurement. Emergency Crews can use these voltmeters to detect voltage presence warning. They will accurately measure AC and DC voltages.
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Hi-Z Probes
B-1012-B
High Voltage Probes for Very Low Current Power Supply Voltage Measurementto 120kV, such as Electrostatic Paint Spray Applications...
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HV Rotary Switches
B-1003
A key feature of our rotary switches is their simple mechanical design which results in conservative stress levels for trouble-free, long life use. In addition, each rotary switch has a reinforced chassis design utilizing G-10 or G-11 fire retardant anti-tracking coated epoxy glass insulation. G-7 silicone glass is used for special applications where RF or high temperatures are involved. Heavy duty contacts, specifically designed to minimize corona in the Ross rotaries, are made of highly conductive yet weld resistant alloy with high contact closing force. This high force gives our rotary switches high momentary current capability and a reputation for their ability to withstand high shock and vibration as well as other severe environmental conditions. Ratings to 150kV, to 200A. When immersed in insulating oil, fluid or gas, the voltage withstand value is at least doubled and the interrupt capability is much greater. In a gas atmosphere, no modification is required. However, immersion in oil or fluid may require modification in some cases, at an extra cost (optional). Each unit is either manually or electrically operated. One SPDT contact is standard on most units. The auxiliary contact is used as an interlock for protection against "Switching Hot".
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Solenoid-Saver
B-1022-B
*Solenoid-Saver® eliminates AC hum and reduces heat generation for many types of solenoids.*Controlled application of current prevents coil burnout if high pull-in/low holding current AC or DC solenoids fail to pull-in completely.*Can adapt high pull-in low holding current solenoids to special voltages & frequencies 12V to 250V DC or 12V to 240V AC wideband 25-800Hz.*Optional optical isolated control input 4 to 10V, 5MA, 20 usec or more (or other control voltages) to actuate any high current solenoid directly by computer or other low power signal source.*For coils of 1 ohm to 3,500 ohms DC resistance requiring up to 70 amps during pull-in up to 120 milliseconds. Basic solenoid coil voltage and resistance must be specified.*Eliminates heat producing dropping resistors, bypass switch, dual coils, laminations, & shading coils.*Can increase pull-in and holding force of many types of solenoids.*Optional stored energy to delay solenoid release on loss of power.*Can be used as an added accessory to existing solenoid installation to eliminate AC hum, lower coil temperature and prevent coil burnout.*Optional high speed, 1 microsecond sensing, 1-10 millisecond actuation with stored energy Solenoid-Saver®
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High Current Switches
B-1002
Ross High Current Switches are available up to 36,000 amps continuous and over 1,700,000 amps 20µsec RC pulse, with voltage ratings of 6 volts to 400kV peak test. Standard Ross high current switches are built with 80 to 120psi air cylinder actuators. Air cylinder or motor operated for high contact force. Arcing contacts optional for closing current. G-10 epoxy glass laminate is standard insulation on most models. G-7 silicone glass is used on models available for RF applications above 100kHz. Most Ross high current switches are available with additional lengths of insulation, where the high voltage contacts need to be spaced at a greater distance from the actuator and control circuit. Voltage withstand value is at least doubled and the interrupt capability is much greater when high current switches are immersed in insulating oil, fluid or SF6 gas. For gas atmosphere, no modifications are necessary; however, oil or fluid immersion requires modification at a slight extra cost.
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High Voltage Grounding Relays
B-1007
Extra high voltage, low corona, grounding relays of the air insulated type. Peak test ratings up to 300kV and 100 amps continuous. Units can be operated either by solenoid, motor, or air cylinder, with spring or gravity return. All models have spherical contacts. When voltage transient limiting is required, some models have an adjustable sphere gap. Also available are units with built-in high voltage discharge resistors with energy dissipation capabilities from 50 to 10,000 ohms. Some units can be reduced in height if full line to ground voltage is connected to the top high voltage contact only and the other high voltage terminal is operating at, or near, ground potential. Line to ground voltage can also be increased by adding insulation between lower high voltage contact and ground. Normally mounted base down. Base up mounting if specified.
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High Voltage Relays
B-1001
Air insulated types for isolating loads, tap selections, safety discharge & grounding to help meet OSHA and other safety regulations. Ratings from 1mA to 800 amps continuous, to 100,000 amps capacitor discharge. Peak 1 minute test voltages from 5kV to 300kV. Single or Multipole. Auxiliary contacts are optional on all types. Options include latching, extended life, and tungsten contacts available for high current closing. DC, 25-800Hz & air pressure actuation available. Also usable in oil or insulating gas with increased ratings.
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Stored Energy Solenoid Drivers
B-1014
The remote contact controlled HCA Series and the SCR controlled HCB Series of Stored Energy Solenoid Drivers produced by Ross Engineering Corporation are used for high speed opening or closing of Ross Circuit Breakers and Contactors. They perform high speed microseconds to milliseconds actuation of various electromechanical devices. The units feature minimum internal time delay, trigger signal overload protection, and up to 3000 joules of energy storage.
