34
Service Manual
Plus
MICROSPEED
For filter connection (divert to building ground the unwanted frequency)
considering such devices can produce small leakage current towards
building ground (this current amounts to "some" of milliamperes). For
these precautionary reasons, it is necessary to connect the filter to
building ground prior to connecting the power supply.
Regarding current leakage, remember that it must be considered when
sizing differential devices, thus avoiding undesired interventions. The
precise data relative to our filters can be found below.
Installation
Mechanical and Electrical Characteristics
Below is a table showing the electrical characteristics of our
recommended filters. Pay particular attention to leakage, differential
adjustements, and nominal current in accordance with operational tem-
perature.
Instructions for EMC requirements (continued)
Below is a table showing the electrical characteristics of our
recommended filters. Pay particular attention to leakage, differential
adjustements, and nominal current in accordance with operational tem-
perature.
Type
Current Leakage Curr.
Power loss
Weight
(A)
(mA)
W
Lb.
SCHAFFNER FN355
3(40°C) 0.07 (400V 50Hz)
1.5
0.55
SCHAFFNER FN2070
3(40°C) 0.4 (250V 50/60Hz)
0.55
TIMONTA FMW4
4(40°C) <0.5 (400V 50/60Hz) 1
0.6
TIMONTA FSS2
3(40°C) <0.5 (250V 50/60Hz)
0.6
TIMONTA FSS2
6(40°C) <3 (250V 50/60Hz)
0.6
The TIMONTA FMW65-4:
3 PHASE Series filters are furnished with Fast-
on connectors for both input and output.
Max. voltage : 440Vac
Max. current : 4A @ 40°C
The SCHAFFNER FN355-3:
3 PHASE Series filters are furnished with Fast-
on connectors for both input and output.
Max. voltage : 420Vac
Max. current : 3A @ 40°C
Working temperature: -25° +85°C