Power supply for
9 V flat cell battery per IEC 6 F221) number of possible triggers for new battery is
about 10,000
ready about 1 year, with frequent tripping correspondingly less,
to 1.5 V baby cell IECR141)
The battery is charged only with terminal short-circuit or during the measurement.
Instead of brown stone cells may also alkali-manganese cells or NiCd rechargeable
batteries.
NiCd batteries are recommended especially at ambient temperatures below 0 ° C.
Insulation group
Β
to VDE 0110 Protection Enclosure
, terminals
to
DIN 40 050
Test voltage 3 kV rms to VDE 0410 V scale length,
Α
-scale: 0 .. 75: 96mm
Ω
-scale O. .. 00: 77 mm
Dimensions 110 mm 181 mm
χ χ
62 mm Weight 0.75 kg including batteries
The MA4S is protected by several well-matched protection against damage
from mishandling and overloading.
The bipolar relay is on a threshold amplifier
controlled and protects the voltage ranges 750 mV
... 75 V and the resistance measuring range 100
Ω χ
6 - to 10-times the upper range limit for each area.
max. 5 minutes to about 10 times the upper range limit if the
Overload threshold lies just below the relay.
> 250 V with ^
max. 250 V -
The relay has raised, then the measuring circuit for the region
75 mV/750
μΑ
, 2,5 mA ... 250 mA and
Ωχ
1 separated, the guards of these areas
(security and protection Diode) are still in operation.
:
or
Breaker control:
or resistance
Housing
IP 50
IP 20
3. Overload protection
1.3 Relays
Pickup:
Resilience:
Breaking capacity:
F
