Datasheet

10
• For 3-phase motors from 1 to 630 A and over. Cable feed
through relay.
• Precise motor heating and cooling memory, reproduces
its thermal image.
• Immediate detection of phase loss (3 s), even at reduced
load.
• Visual indication of tripping cause.
For motors of low and medium power in several applications
such as compressors, ventilators, surface mounted pumps,
conveyor belts, machine tools, and in general to protect
motors which need dependable and accurate protection
relays for every type of start.
Its 3 trip classes cover many types of starting or working
cycles.
By means of this plug-in optional accessory, the relay status
can be seen and reset from the exterior of the electrical panel
board.
Easy to install. Size of a Ø22 mm push button.
Suitable for motor control centres (MCC) and panel boards.
Models Code Relay type
ODC 12530 C
MODELS
C 9 C 21 C 45
Adjustment range
Motor 400 V
50/60 Hz
I
B
(A) 3 - 9,3 9 - 21,6 20 - 45,2
CV 2 - 5,5 7,5 - 12 15 - 30
kW 1,5 - 4 5,5 - 9 11 - 22
Code
according to the
relay voltage supply
(+15% -10%)
ac: 50/60 Hz
230 Vac single phase 11203 11223 11243
115 Vac single phase 11202 11222 11242
24 Vac, dc single phase 11200 11220 11240
For ,
N
of the motor below the minimum setting ,
B
Pass the cables several times (n) through the holes in the relay ,
B
= n x ,
N
For ,
N
of the motor below the minimum setting ,
B
Use 3 CT .../5 and the relay C9 and pass the secondary twice through the holes
External display module (optional) ODC
CHARACTERISTICS
Thermal memory / Overload trip
Yes / From 1,1 x ,
B
Maximum motor nominal voltage 1000 Vac
Trip classes (IEC 947-4-1) 10 - 20 - 30
Phase imbalance protection Over 40%. Tripping time < 3s
Reset mode Manual and remote
Signalling LED’s
3 LED’s: ON +
+
Output contacts 1 relay with 1 NO + 1 NC
Switching power
,
th
: 5A; AC15 - 250V - 2A; DC13 - 30V - 2A
Terminals: Max. section / screw torque 2,5 mm
2
, No. 22 - 12AWG / 20Ncm, 1.8 LB - IN
Power consumption
C9: 6,5VA (230Vac) - 3VA (115Vac) / C21-C45: 2,5VA
Protection degree / weight / mounting IP20 / 0,3 kg / DIN rail
Storage temperature -30°C +70°C
Operation temperature / max. altitude -15°C +60°C / 1000m ; -15°C +50°C / 3000m
Standards IEC 255, IEC 947, IEC 801, EN 50081-2
BASIC MOTOR PROTECTION
EXTERNAL DISPLAY MODULE
DIMENSIONS C RELAY (mm)
DIMENSIONS ODC MODULE (mm)
WIRING DIAGRAMS (mm)
C
Overload
Phase imbalance
or phase loss
ODC
45
79
8
12
Ø 22,5
Ø 30,0
39
95 905
44
11,3 20,0
1 = 2 m
38
35,4
12
8
L3
L2
L1
13
M
14
A2
A2
N
K1
A1
A1
L1
13-K1
14-K1
97
98
95
96
Tripped
or Us=0
Normal
96
96
95
95
98
98
97
97
Settings and curves,see pages 24 to 29.
Motor protection relays
PROTECTION
FUNCTIONS
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10/2010/D00