F4100 is digital measuring, fully programmable device from series 4100, designed on basis of microcontrollers.
The device is used to measure frequency 50/60Hz in electrical substations and power plants. F4100 is powered by the measured AC voltage.
F4100 has potential-free contacts for remote signalization if measured frequency goes out of certain specified
range (option “R”). The unit is designed to be mounted on boards in control rooms of electrical substations.
user manual
- |
basic option - without any potential-free contacts, user menu is not code-protected |
R |
there are three relay contacts that provide remote
signalization, acting when certain programmed voltage
levels are reached |
C |
code-protected user menu |
X |
user is not allowed to change device settings |
* - Every option can be ordered in any combination with other options, excluding
versions “C” and “X”.
nominal input frequency |
50/60 Hz |
frequency range |
20 - 300 Hz |
power supply |
55-250 VAC/ 30-270 VAC |
measuring circuit input resistance |
min 200kOhm |
display |
super bright red, 4-digit, 94х29 mm visible, purple filter |
measurement error |
< 0.3 % rgd + 2 digit |
measurement cycle |
< 1 s |
relay contacts count |
up to 3 |
power consumption |
< 3 W |
work temperature |
from 0° C to 55° C |
storage temperature |
from -50° C to +90° C |
dimensions (H/W/D) |
144/144/65 mm (w/o plugs); 144/144/75 mm (with plugs) |
mounting hole (H/W) |
136/136 mm quad, centered |
protection class |
IP52 front, IP31 back |
own weight |
320 g |
In its normal working mode F4100 shows the measured frequency and continuously signalizes if the
frequency is inside or outside programmed range by light-emitting diodes and relay contacts. If the
frequency goes outside range, the display blinks with frequency of about 2-3Hz (blinking can be turned
off any time from user menu). The device signalizes that measured frequency has gone outside range after
programmed amount of time (programmed as number of consecutive measurements which are outside range).
It is done in order to prevent random short-time switching of the relays. Hysteresis is also added to
relay switch-off characteristics to further improve noise characteristics of the remote signaling.
If the frequency goes again in the specified range plus hysteresis frequency, F4100 turns off the relays
instantly without any delay.
- low frequency level
- high frequency level
- display blinking when Hi/Lo
- hysteresis
- delay for relay contacts