~ 7 ~
NOVATEK-ELECTRO
UBZ-304
1
–
LCD
2
–
Green LED
MMSP
is on when the relay is in MNS mode;
3 - Green LED
Func relay
is on when functional relay is on;
4 - Green LED
is on when UBZ functional relay operates in start-delta mode (it.2.5.3);
5
–
Blue LED
EXCHANGE
is on when data exchange with PC occurs;
6
–
Red LED
FAULT
:
- when load relay is off: it is on when UBZ is in fault conditions (it flashes if after fault ARS is expected);
- when load relay is on: it flashes when the motor is in conditions of over-current or thermal overload but relay off
time has not come yet;
7
–
Green LED
TR
is on when UBZ functional relay operates in time-delay relay mode;
8 - Green LED
Power relay
:
- it is on when load relay is on;
- it flashes if UBZ is within hysteresis band when controlling using analog inputs;
9
–
Red LED
SETUP
is on when UBZ is in the mode of parameters setting;
10 - Button
(UP) is scrolling of displayed parameters in the parameter view mode and scrolling of the menu in the
parameters setting mode;
11 - Button
(DOWN) is scrolling of displayed parameters in the parameter view mode and scrolling of the menu in
the parameters setting mode;
12 - Button
RES/MEM/SEL
is the parameters recording in the setting mode, switching over the group of displayed
parameters in the view mode, reset;
13 - Button
SETUP
turns on the parameters setting mode;
Figure 1.1
–
Controls and
Overall Dimensions of UBZ
3 SPECIFICATIONS
3.1 BASIC TECHNICAL SPECIFICATIONS
Basic technical specifications of UBZ are given in Tables 3.1 and 3.2; specifications of contacts of built-in relays
are shown in Table 3.3.
Table 3.1
–
General Data
Description
Unit of
measure-
ment
Value
Application of the unit
-
Switchgear and control-gear;
induction motor protection control;
Design (installation) type
DIN rail 35 mm
Protection rating of front panel
-
IP64
Protection rating of housing
IP10
Climatic version
NC 3.1
Contamination level
II
Overvoltage category
II
Rated voltage of insulation
V
450
Rated impulse withstand voltage
kV
2.5
Electric shock protection class
II
Wire cross section for connection to terminals
mm
2
0.5-2
Torque for terminal screws
N*m
0.4
