Date Code 20020329
SEL-DTA2 Instruction Manual
Section 2
Specifications
General Specifications
Display Functions
Three primary sets of display data:
Faults (including fault location), metering, and
target relay self-test status
Line-by-line scrolling of fault and status data
Automatic conditions updating of meter data
Standard Meter: Updates approximately
every five seconds
Fast Meter: Updates approximately every
one-half second
30-event fault history
Self-Testing
Stall timer monitors processor
Setting checks
RAM, ROM, and display tests
Dielectric Strength
Optoisolated input, relay outputs, and power
supply routinely tested at 300
0
Vdc for 10
seconds.
Interference Tests
Optoisolated input, relay outputs, and power
supply:
IEEE C37-90 SWC test (type tested)
IEC 255-6 interference test (type tested)
Impulse
Optoisolated input, relay outputs, and power
supply:
IEC 255-5 0.5 joule, 5000 volt test (type
tested)
RFI Tests
Type tested in field from a 1/4-wave antenna
driven by 20 watts at 150 MHz and 450
MHz, randomly keyed on and off at a
distance of one meter from unit.
Unit Weight
5.0 pounds (2.3 kg)
Operating Temperature
–4°F to +158°F (–20°C to +70°C)
Transducer Channels
Current and voltage are simultaneously
available for each of the eight channels.
Channels assigned to metering functions
automatically update regardless of display
mode.
Current Outputs
Option 1: –1 to 1 mA range
Option 5: –5 to 5 mA range
10 V load compliance
± 0.2% accuracy at full scale
> 2.25 mega ohms output impedance
Voltage Outputs
–5 to 5 V range
± 0.2% accuracy at full scale
10 mA maximum load current
Control Input Voltage
48 V:
30 to 60 Vdc
125 V:
80 to 150 Vdc
250 V:
150 to 300 Vdc
Power Supply
48/125 V: 36 to 200 Vdc,
85 to 140 Vac; 12 watts
250 V:
85 to 350 Vdc,
85 to 264 Vac; 12 watts
