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Test certificate forms for "Testing of electrical devices" are available for download free of
charge at www.benning.de
See figure 10:
4.
Unit description
See figure 1:
Appliance front face
See figure 2:
Top side of the device
The display and operator control elements specified in Fig. 1 and 2 are designated as follows:
1 Test socket, for connecting the device to be tested,
-key, testing of devices of protection class I (devices with protective conductor and
2
accessible conductive parts which are connected to the protective conductor),
-key, testing of devices of protection class II (shock-proof devices without protective
3
conductor and with accessible conductive parts) and testing of devices of protection class III
(safety extra-low voltage),
-key, testing the protective conductor current (differential measurement) or contact
4
current (direct measurement) under operating conditions (test sample is supplied with mains
voltage)
-key, reducing the testing voltage to 250 V
5
resistance
-key, testing of 30 mA RCDs
6
-key, testing of three-phase devices under operating conditions (044140, 044141)
7
8 Digital display, indicates the test progress and individual measuring results,
9 4 mm test socket, for connecting the test lead with alligator clip
J IEC connector, for connecting the IEC power cord
K Mains connection socket, for connecting the mains voltage (230 V, 50 Hz), for voltage
measurement at external shock-proof socket or for connecting the measuring signal cable of
the measuring adapter (16 A CEE adapter, three-phase, active (044140)/ 32 A CEE adapter,
threephase, active (044141))
L Serial PS/2 port for optional printer BENNING PT 1 (044150)
-key, for storing the displayed measured values (display values)
-key, for calling stored measured values (display values)
-key, for printing the displayed or stored measured values by means of the printer
BENNING PT 1
USB interface (Micro-B socket), for connection of the USB connecting cable
5.
General information
The BENNING ST 725 is intended for electrical safety tests according to DIN VDE 0701-0702,
DGUV Regulation 3 (former BGV A3) and ÖVE/ ÖNORM E8701.
Automatically, the BENNING ST 725 verifies the type of the connected test object and informs
the user in case of incorrect selection of the testing procedure [ 2 ... 3 ]: preset limiting values and
measuring results with "pass/ fail" information make it easier to evaluate the test.
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At full battery capacity, the BENNING ST 725 allows to carry out approx. 2,500 device tests.
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Appliance dimensions:
(L x W x H) = 270 x 115 x 55 mm
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Appliance weight: 1100 g
6.
Ambient conditions
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The BENNING ST 725 is intended for making measurements in dry environment.
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Maximum barometric elevation for making measurements: 2000 m,
- Over voltage category/ setting category: IEC 61010-1 → 300 V category II,
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Contamination class: 2,
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Protection class: IP 40 (DIN VDE 0470-1 IEC/ EN 60529)
IP 40 means: Protection against access to dangerous parts and protection against solid
impurities of a diameter > 1 mm, (4 - first index). No protection against water, (0 - second
index).
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EMC: EN 61326-1
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Operating temperature and relative humidity:
For operating temperatures from 0 °C to 30 °C: relative humidity less than 80 %
For operating temperatures from 31 °C to 40 °C: relative humidity less than 75 %
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Storage temperature: The BENNING ST 725 can be stored at any temperature within the
range of - 25 °C to + 65 °C (relative humidity from 0 to 80 %). The battery should be removed
from the instrument for storage.
7.
Electrical specifications
Note: The measuring accuracy is specified as the sum of
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a relative fraction of the measured value and
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a number of digits (i.e. counting steps of the last digit).
This specified measuring accuracy is valid for temperatures within the range of 18 °C to 28 °C
and relative humidity lower than 80 %.
09/ 2014
Optional accessories
BENNING ST 725
or 500 V
for measuring the insulating
DC
DC
23
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