DB-1 Demonstration Board
Technical specifications of the DB-1 board and properties of individual functions:
Short-circuit loop impedance:
- measurement of L-N short-circuit loop with impulse currents
up to 25 A and 60 ms, measurement of L-PE short-circuit loop with
currents up to 20 mA.
Measurement of RCD parameters (30 mA device):
- measurement of the RCD trip time,
- measurement of the RCD operating current,
- measurement of resistance to earth,
- measurement of touch voltage.
Soil resistivity:
- measurement of resistivity for three kinds of soil (14 Ωm; 300 Ωm;
6.2 kΩm).
Resistance to earth.
Measurement with the use of:
- the two-lead method,
- the three-lead method,
- the four-lead method,
- the three-lead method and clamp,
- the two-clamp method,
- a short-circuit loop meter.
Continuity of connections:
- measurement of equipotential bonding and connections of
accessible parts.
Insulation resistance:
- measurement of L-N insulation,
- measurement of L-PE insulation,
- measurement of N-PE insulation.
Measurement of voltage:
- measurement of voltage in socket outlets.
Simulation of abnormalities:
- no continuity of earth conductor (RE),
- exceedance of safe voltage during the RCD measurement (UB),
- leakage current (IErr),
- too low L-N insulation resistance (RISO(L-N))
- too low L-PE insulation resistance (RISO(L-PE))
- too high short-circuit loop impedance (ZL),
Key Features:
The board DB-1 simulates home distribution network. It enables to
demonstrate the method of carrying out the following tests:
-
short-circuit loop impedance for the evaluation of automatic supply
disconnection,
-
RCD disconnection time and current,
-
earthing resistance,
-
earth resistivity,
-
continuity of equipotential bondings,
-
insulation resistance,
-
mains power voltage.
This demonstration board allows for simulating typical defects and abnormalities in consumer power systems.
Specifications:
Electrical safety
- type of insulation: double, according to EN 61010-1and IEC 61557, EMC
- measurement category: CAT II 300V acc. to EN 61010-1
- protection class acc. to EN 60529 IP40
Rated operational conditions:
- operation temperature................................................................................ +10...+40°C
- storage temperature................................................................................... -20...+60°C
- humidity.......................................................................................................... 20...80%
Other technical data:
- mains power supply............................................................................................. 230V
- warranty...................................................................................................... 12 months
- dimensions.................................................................................. 405 x 300 x 140 mm
- weight approximately......................................................................................... 3,6 kg
- quality standard... development, design and production in accordance with ISO 9001
- protection............................................................... 2 x T3,14A 250V, or 2xF4A 250 V
- power consumption approximately.................................................................... 15mW
- RCD type.............................................................................................. 30mA type AC
.*For full Technical Specifications, please refer to PDF Data Sheet
Training options of the DB-1:
1) Socket outlet 230 V.
2) Additional PE socket.
3) 230 V power supply status light.
4) RCD.
5) Measuring socket.
6) TN system jumper.
7) TT system jumper.
8) RE1 earth (ZW RE1).
9) Water pipe equipotential bonding jumper (ZW H2O).
10) RE2 earth (ZW RE2).
11) Metering points P1, P2, P3, P4, P5.
12) RE1 earthing metering point (E1).
13) RE2 earthing metering point (E2).
14) Test lead sockets.
15) Abnormality selector switches.
16) Soil type selector switch for measurements of soil resistivity.