| Megger / AVO / Multi-Amp EPOCH-10 Protective Relay Test Set
The Multi-Amp® EPOCH-10 ® relay test set
integrates advanced microprocessor- based technology with decades of
experience in the application, design and manufacture of equipment for
calibrating protective relays to provide an extremely accurate, versatile
and easy-to-use relay test set.
Intended for field use at substations and
power plants, the EPOCH-10 is a portable, lightweight and very rugged test
set . Its versatility makes it ideal for use in the relay shop, in the
test laboratory or on the production line.
With the modular design of the EPOCH
family, you can select the unit(s) with the capabilities and features
required by your present application, and add to your original unit(s) as
your testing needs expand. The table lists the different types of relays
by IEEE device numbers and the different EPOCH-10 combinations that would
be required to test them.
When performing automated relay testing
with a computer and an EPOCH-10, Multi-Amp PulseMaster software gives you
the option of using the computer to perform timing tests. This eliminates
the requirement for a separate timer. The accuracy of the computer-based
timing method is approximately ±20 ms with IBM PCs and compatibles. When
high-speed or high-accuracy timing is required, use either the EPOCH-30,
EPOCH-40 or the EPOCH-V.
SPECIFICATIONS
Input
Input Voltage (specify one)
115 V ±10%, 10, 50/60 Hz OR 230 V ±10%,
10, 50/60 Hz
Output
Output Frequency
-
Synchronized to input power source
-
Synchronized to external frequency
source (EPOCH-30 may be used to establish the frequency output of the
EPOCH-10. Standard EPOCH-30 range is 10.000 to 99.999 Hz. EPOCH-10
full output power is available from 40 to 80 Hz. Beginning at 40 Hz,
output power is linearly derated to 50% of output tap and 50% of
output power at 20 Hz.)
-
60 Hz crystal controlled
-
50 Hz crystal controlled
Accuracy
-
Synchronized, tracks input frequency
-
Synchronized to EPOCH-30 ±10 ppm or
0.00006 Hz at 60 Hz
-
±0.006 Hz for 60 Hz crystal controlled
(±0.01%)
-
±0.005 Hz for 50 Hz crystal controlled
(±0.01 %)
Output Current: To meet a variety of
test circuit impedances, three output ranges are provided. Only a single
pair of output terminals is needed since impedance matching to the load is
automatically performed by the microprocessor. Amplitude is adjusted by
4-digit, autoranging pushbutton control, with a large LED display of
setting.
Ranges (auto-impedance matched)
-
0.00 to 25.00 A at 4 V max
-
0.00 to 12 .50 A at 8 V max
-
0.000 to 3.125 A at 32 V max
Resolution
Rating: 100 VA
Duty Cycle: Continuous
Over-Range: A minimum of 20%
amplitude over-range is available on each tap to reduce unnecessary tap
changing and extend output capability. Duty cycle will vary with percent
of over-range.
Accuracy
Typical: ±0.5% of setting or ±0.1 % of range, whichever is greater
Maximum: ±1% of setting or ±0.1% of range, whichever is greater
Distortion : Less than 1% typical, 2% maximum
Alarm will indicate when amplitude, phase angle or waveform is in error.
for use with a Multi-Amp / Megger / AVO
EPOCH-II |
