Descrizione
DISPOSITIVO DI CORRENTE RESIDUA JEL1 AC 2P 40A/30MA
DIFFERENZIALE PURO
Description:
The residual current device works with no extra power supply to the operating
mechanism. It compares the magnitude of the current through the neutral and
phase conductors. The conductors are coiled on toroid and together with the
secondary winding form a measurement transformer. The power conductors are
coiled in such a way that the magnetic fields generated at electrical at electrical
current flow through them are mutually neutralized. At failure in the insulation of
some of the conductors or at presence of a person under voltage, the system is
misbalanced and the magnetic fields can’t be neutralized. This residual field
generates in the secondary current winding, called current leakage. The device
breaks when the value of this current exceed the limit value of the residual
current breaker.
Functions:
? Switching off heavy-loaded electrical circuits at insulation damage of the
conductors to the consumers
? Switching off heavy-loaded electrical circuits at presence of a person under
voltage
? Used to protect not only particular consumers(circuits) but also the whole
panel
? Remarkable with high reliability of current characteristics
? Control: manual switching on and automatic switching off at exit failure
Technical data:
? Rated operating voltage 230/400V; 50/60Hz
? Rated current: according to the table
? Responsiveness 30; 100; 300;500mA
? Time delay until break: <0.1s at I ? n and <0.04s at 2I ? n
? Surge voltage wear resistance ≥ 2000V
? Static contact: pure copper T2Y2 type
? Short circuit current wear resistance: 4500A, 6000A
? Joining terminal: flat (tunnel) screw terminal made of 1.5 coldly draw-plated
plane Q235A
? Type of the plastic:
? material: self-extinguishing nylon PA66
? permittivity strength: >18 MV/m
? Contact head: silver graphite CAg(5)
? Electrical wear resistance (number of cycles):≥ 5000
? Mechanical wear resistance (number of cycles) ≥ 10000
? IP code: IP>20
? Indication for operating (switched on) position
? Plastic material of the breakers of UV rays and non- flammable
? Ambient temperature: -10°C +65°C
? Installation altitude: up to 2000m
Connecting:
? Power supply busbar (only for bipolar)
? Flexible or rigid conductors with corresponding sections
Mounting:
? On DIN-rail
? Mounting position: vertical
The residual current device is mounted in the distribution box, and after the
device the neutral conductor and the earthing conductor must not be connected
together. In order to work accurately, the device must have three- or fiveconductor grid with separate protective conductor (PE) (e.g. earting system TN-s
or TT with three or five conductors).The corpus of the consumer depending on the
grid type must be connected either to the protective conductor or be earthed.
CARATTERISTICHE TECNICHE
