Megger SR-98, Инструкция по эксплуатации

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between the voltage and current outputs. Therefore, values like reach, maximum angle
of torque, directional balance points and closing angles can be easily tested. In addition,
breaker contact simulation provides swift and easy testing of reclosing type relays.
Other types of relays not specifically listed on the menu above can be tested using one
of the menu selections. For example, current differential, voltage controlled/restrained
overcurrent and current balance relays are tested using the CURRENT RELAY test
screen. All single-phase impedance type relays, and some three-phase relays that can
be tested single-phase with the voltage coils in parallel and currents in series, are tested
using the IMPEDANCE RELAY Test Screen. This would include transmission line
protection and loss of field type relays. The SYNCH RELAY Test Screen is used to test
synchronizing and sync check relays.
The Metering Screen provides powerful multi-purpose metering functions. Values like
Volts, Amperes, Phase Angle, Power, Reactive Power and Power Factor are all
simultaneously displayed.
FEATURES AND BENEFITS
•
Large variable contrast LCD display screen - Easy to read, no interpolation of analog
meter scales. This saves time in testing relays and reduces human error.
•
Display screen prompts operator – The display screen prompts the user with easy to
understand and use function keys. Single button operation saves time in testing
relays and reduces human error.
•
Display screen provides five different languages – The display screen prompts the
user in English, Spanish, Portuguese, French and German. This saves time in
testing relays and reduces human error.
•
Output current and voltage sinewaves are generated digitally. Outputs do not vary
with sudden changes in the input voltage or frequency, which increases test
accuracy and saves testing time.
•
Memory hold metering - Allows user to set test currents and voltages faster.
Reduces heating of device under test. Saves time in testing relays.
•
AC/DC voltage outputs can be operated independently of the AC current output -
Can provide DC logic voltage to solid-state relays prior to applying simulated fault
current. Also allows user to test voltage controlled / restraint overcurrent relays,
without blocking voltage element contacts closed. Eliminates elaborate test circuit
connections, purchasing a separate DC voltage source or using station battery.
•
Timer has independent Start and Stop Gates - Perform timing functions
independent of relay test set operation. Eliminates purchasing a separate timer for
timing circuit breakers.
•
Current Accurate mode - Multi-purpose test set capable of testing small molded-
case circuit breakers and motor overload relays commonly found in industrial