Atec Megger-TTR100 - Manual (Page 3)

TTR™100
Handheld TTR
■ Automatic self-calibration for each test.
■ Rugged, lightweight design ideally suited for a harsh
field and substation environment.
■ Three user selectable standards: ANSI, IEC, and
Australian. Also meets IEC61010-1, CE, and IP54
requirements for protection against ingress of dust
and water.
■ Six user selectable languages: English, French, German,
Italian, Portuguese and Spanish.
SPECIFICATIONS
Type of Power
Rechargeable NiMH battery pack, 3.6 V dc, 3800 mAh
Battery Life
15 hours of field operation
Charger input voltage
100-250 V ac, 50/60 Hz ±2 Hz Unit can be operated while
charging. Charging time is approximately three hours
Optional charger source
Optional inverter 12 V dc to 115 V ac for powering a charger from
vehicle battery (non CE marked)
Excitation Voltage
8 V rms for testing distribution or power transformers, and PTs;
1.5 V ac RMS, or 8 V ac RMS for testing CTs.
The excitation voltage is switched automatically if excitation
current exceeds a preset value.
Test Frequency
55 Hz internally generated providing a universal 50/60 Hz test set
Excitation Current Range
0 to 100 mA, 4-digit resolution
Turns Ratio Range
8 V ac: 0.8 to 20,000, 5 digit resolution (for transformers and PT
testing)
1.5 V ac: 5.0 to 2200, 5 digit resolution (for CT testing)
Phase Deviation Range
±90º, 1 decimal point for the minutes display, 2 decimal points for
the degree display, or for the centiradian display
Winding Resistance Range
0 to 2000
Ω
, 4 digit resolution
Transformer Vector Group
1PH0 or 1PH6
Transformer Polarity
Additive or Subtractive
Current (rms) accuracy
±(2% of reading + 1 digit)
Phase Deviation Accuracy
±3 minutes
Turns Ratio Accuracy
±0.1% (0.8 to 2000)
±0.15% (2001 to 4000)
±0.20% (4001 to 10,000)
±0.25% (10,001 to 20.000)
Winding Resistance Accuracy
±(10% of reading + 1 digit) for 10
Ω
to 2000
Ω
range
±(10% ±1 m
Ω
) for 10 m
Ω
to 9.99
Ω
range
±(10% ±0.5 m
Ω
) for 0.1 m
Ω
to 9.99 m
Ω
range
PC/Printer Interface
RS232C port, 9-pin, 57.6 Kbaud (19.2 Kbaud for the printer)
Display full graphics
LCD module, wide temperature range, 128 x 64 dots (21
characters by 8 lines)
Test Result Storage
Internal, nonvolatile memory for storing up to 200 sets of single-
phase measured and calculated ratio, exciting current, phase, ratio
error, winding resistance, polarity, vector group, plus header
information (company, substation, transformer manufacturer,
transformer rating, instrument serial number, temperature, relative
humidity, and operator name)
In addition, up to 100 user-defined transformer settings can be
stored.
Computer Software
Included software for downloading of data to a PC, data storage
to database and report printout.
Test Leads
Supplied with one complete set of single-phase leads, 6 ft (1.8 m)
in length
Transformer Winding Phase Relationship
ANSI C57.12.70-1978
CEI/IEC 76-1:1993 and Publication 616:1978
AS-2374, Part 4-1982 (Australian Standard)
Safety/EMC/Vibration
Meets the requirements of IEC-1010-1, CE and ASTM D999.75
Temperature Range
Operating: -4º F to 131º F (-20º C to 55º C)
Storage: -58º F to 140º F (-50º C to 60º C)
Relative humidity
Operating: 0 to 90% noncondensing
Storage: 0 to 95% noncondensing
Protective Devices
High voltage side shorting relays, transient voltage suppressors
and gas surge voltage protectors
Measuring Time
8 to 20 seconds for a single-phase distribution transformer
Measurement Method
ANSI/IEEE C57.12.90
Dimensions
9.5 H x 4.5 W x 1.875 D in. (241 H x 115 W x 48 D mm)
Weight
Approx. 3.3 lbs (1.5 kg), instrument only, without leads
Protective Instrument Carrying Case
Neoprene case with carrying strap and attachable pouch for
universal charger and 6 ft. (1.8 m) test leads, single-phase
connection (two leads for the H winding and three leads for the
secondary winding with tap).