Atec RM430 User Manual
a brand of
a brand of
Haefely is a subsidiar y
The transformation ratio meter has been developed especially
the connection to the voltage divider; one LEMO plug and one
transformation ratio which are time consuming and subject to
RM 430
Transformation Ratio Meter
The ratio meter type 430 is used for the measurement and
check of the transformation ratio of voltage dividers and
terminal networks.
The instrument measures the real transformation ratio taking
into consideration the influence of the surroundings and
including the effect of the measuring cable (which is
important especially in the case of damped capacitive voltage
dividers).
The connection to the high voltage electrode of the voltage
divider and the instrument can be done with a wire of 1 mm
diameter. For the low voltage arm the impulse voltage
measuring cable shall be preferably used.
for checking-up the transformation ratio of high voltage
dividers in the test field.
ADVANTAGES & BENEFITS
Easy usage
Real Ratio measured
Special designed for HV dividers
Small, portable unit
Battery powered
APPLICATIONS
The instrument is available as a small portable unit placed in
a synthetic housing. The unit is powered from a built-in
battery thus enabling measurements at appropriate places on
the test platform.
One banana plug or one BNC output respectively is used for
BNC plug for the low voltage connection.
By pressing a push-button a sine wave of 1000 Hz is applied
and the value of the transformation ratio of the voltage
divider is displayed digitally.
The ratio read-out remains during approx. 1 min. on the
screen then vanishes automatically.
The selection of the measuring range occurs automatically
thus eliminating calculations for the determination of the
errors.
TECHNICAL SPECIFICATIONS
Haefely has a policy of continuous product improvement. Therefore w e reserve the right to change design and sp ecification without notice. LL_RM430_0707_RS.doc – 1111////2222
Measuring Range 1 .. 9999
Ranging automatic
Max. load < 10nF, > 5k
Accuracy ± 1%
Calibration Voltage 1kHz, 90Vpp sine wave
Display 4 digits
Overflow indicator yes
Supply Built-in battery with charger
Duration 100 measurements / charge
Battery check yes
Temperature 5°C .. 40°C
Humidity 5 .. 95% r.h.
Dimensions 190 x 137 x 60 mm
Weight 1 kg
of Hubbell Incorporated.
a brand of
a brand of
Haefely is a subsidiar y
To measure a voltage divider the ratio meter RM430 is connected as shown above
SCOPE OF SUPPLY
Ratio Meter type 430
Charger
Manual
European Contact
Haefely Test AG
Lehenmattstrasse 353
4052 Basel
Switzerland
+ 41 61 373 4111
+ 41 61 373 4912
sales@haefely.com
Locate your local sales representative at
www.haefely.com
USA Contact
Hipotronics Inc.
1650 Route 22
Brewster, NY 10509 USA
+ 1 845 279 8091
+ 1 845 279 2467
sales@hipotronics.com
PO Box 414
of Hubbell Incorporated.
Haefely has a policy of continuous product improvement. Therefore w e reserve the right to change design and sp ecification without notice. LL_RM430_0707_RS.doc – 2222////2222
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