Atec Megger-550503 - Manual (Page 4)

shift, excitation current, test date, test voltage, type of
transformer (single or three-phase), the configuration of
the high and low voltage windings, transformer tap
number and polarity. An example of the TTR test results
report is shown in the
previous column.
Calibration Standard
The Calibration Standard
has been designed for use
as a reference transformer
for checking the accuracy of
the Biddle Three-Phase
TTR. The standard is also
useful for troubleshooting
and repairing the
instrument. The Calibration
Standard is available with a
Calibration Certificate of turns ratio and phase shift
accuracy traceable to NIST.
overvoltage, and over-temperature. The power output is
limited to 125 Watts, thus protecting it from being
overloaded.
Printer
Test results can be
documented using an
optional thermal printer
which is easily attached to
the TTR as shown below.
A header can be printed
that provides spaces to
write in the operator name,
transformer information,
temperature, relative
humidity and
comments/notes. The
header automatically
includes the test set catalog number. The test results
printout includes ratio, ratio deviation in percent, phase
Three-Phase TTR ®
Transformer Turns Ratio Test Set
ORDERING INFORMATION
Optional Accessories
Test leads
For single-phase connections, shielded, clip-end terminated
H winding, 10 ft (3.1 m) 30915-506
X winding, 10 ft (3.1 m) 30915-507
For three-phase connections, shielded, clip-end terminated
H winding, 20 ft (6.2 m) 30915-524
TTR Printer Package
120 V, 60 Hz 35312-1
230 V, 50 Hz 35312-2
Includes Battery/line-powered serial thermal printer
Printer interface cable
Shelf for mounting printer
Calibration Standard 550555
AVOLink software consult factory
Inverter with 3 ft (0.91 m) cigarette adapter cord
12 V dc to 120 V ac, 60 Hz 35271-1
12 V dc to 120 V ac, 50 Hz 35271-3
12 V dc to 230 V ac, 60 Hz 35271-2
12 V dc to 230 V ac, 50 Hz 35271-4
Transit case (for instrument leads and accessories) 35313
Item (Qty) Cat. No.
Three-phase Transformer Turns Ratio Test Set
120 V ac ±10%, single phase, 50 ±2 Hz
or 60 ±2 Hz, 100 VA
550503
230 V ac ±10%, single phase, 50 ±2 Hz
or 60 ±2 Hz, 100 VA
550503-47
Included Accessories
Canvas carrying bag for test leads 30915-211
Power supply cord, 8 ft (2.5 m) 17032-4
Ground lead, 15 ft (4.6 m) 4702-7
Test Leads
For three-phase connections, shielded, clip-end terminated
H winding, 10 ft (3.1 m) 30915-505
X winding, 10 ft (3.1 m) 30915-504
Extensions, shielded
H winding, 33 ft (10 m) 30915-503
X winding, 33 ft (10 m) 30915-502
Hand-held switch assembly for remote operation 30915-220
AVOLink software
for downloading test results to a PC
35303-2
RS232 cable for connecting to a PC 35248
Bushing clips (6) MC7144
Transformer Vector Voltage Diagram Set
(For ANSI Standards, IEC Standards, and
AS [Australian] Standards)
35314
Instruction manual AVTM550503
Item (Qty) Cat. No.
Optional Calibration Standard,
Cat. No. 550555 TTR with shelf mounted
printer
UK
Archcliffe Road Dover
CT17 9EN England
T +44 (0) 1304 502101
F +44 (0) 1304 207342
UNITED STATES
4271 Bronze Way
Dallas TX75237-1088 USA
T 800 723 2861 (USA only)
T +1 214 330 3203
F +1 214 337 3038
OTHER TECHNICAL SALES OFFICES
Valley Forge USA, Toronto CANADA,
Mumbai INDIA, Trappes FRANCE,
Sydney AUSTRALIA, Madrid SPAIN
and the Kingdom of BAHRAIN.
Registered to ISO 9001:2000 Reg no. Q 09290
Registered to ISO 14001 Reg no. EMS 61597
THREE_PHASE_TTR_DS_en_V10
www.megger.com
Megger is a registered trademark