Motor Protective Relay
SE
CSM_SE_DS_E_8_2
Solid-state Relay Provides Three Operating
Functions in a Compact Package
• Prevents burnouts in 3-phase induction motors due to overcurrent,
open-phase, or reverse-phase.
• LEDs indicate operation of the selected operating function.
• Wide setting ranges: current: 1 to 160 A; operating time: 1 to 40 s.
• Protects the motor from reversing without starting it.
The SE cannot be used with circuits with
distorted waveforms, inverter circuits, or
capacitor loads.
Model Number Structure
■
Model Number Legend
SE-K@@@@@N
1
2 3 4 5 6 7
8
5. Control voltage
1:
100/110/120 VAC
2:
200/220/240 VAC
4:
380/400/440 VAC
6. Reset method
None: Manual reset
A:
Automatic reset
7. Operating value
None: 115% of the current SV
E:
100% of the current SV
8. Product history
N:
New version
1. Basic model name
SE: Motor Protective Relay
2. Protective functions
K:
Three possible operating functions: overcurrent, open-
phase, or reverse-phase protection
3. Operating time characteristics for overload element
Q:
Instantaneous type: Fixed time at starting and instanta-
neous during operation
None: Inverse type: Inverse operation both at starting and during
operation
4. Case
P:
Plug-in type
None: Flush mount type
Note:
A 3-phase transformer (sold separately) must be used to operate Plug-in Relays at 380, 400, 415, or 440 VAC. Drop the primary voltage
(380 to 440 VAC) to a 200-VAC secondary voltage before applying it to the SE-KP2EN or SE-KQP2EN.
Ordering Information
SE-@EN
Overcurrent operating value: 100% of the current SV.
Terminal/mounting
Control voltage
Reset
Inverse type
Plug-in terminal/DIN 100/110/120 VAC
rail via socket
200/220/240 VAC
Screw terminal/flush 100/110/120 VAC
mount
200/220/240 VAC
380/400/440 VAC
Manual
SE-KP1EN
SE-KP2EN
SE-K1EN
SE-K2EN
SE-K4EN
Model
Instantaneous type
(See note.)
SE-KQP1EN
SE-KQP2EN
SE-KQ1EN
SE-KQ2EN
SE-KQ4EN
Note:
With start-up lock: fixed time-limit on start-up, instantaneous thereafter.
Plug-in type requires a socket (8PFA1) which is sold separately.
Refer to page 9 for the mounting conditions.
1
SE
SE-@@N
Overcurrent operating value: 115% of current SV.
Control voltage
100/110 120 VAC
200/220/240 VAC
100/110/120 VAC
200/220/240 VAC
380/400/440 VAC
Manual
Automatic
Manual
Automatic
Manual
Automatic
Manual
Automatic
Manual
Automatic
Reset
Inverse type
SE-KP1N
SE-KP1AN
SE-KP2N
SE-KP2AN
SE-K1N
SE-K1AN
SE-K2N
SE-K2AN
SE-K4N
---
Model
Instantaneous type (See note 1.)
SE-KQP1N
SE-KQP1AN
SE-KQP2N
SE-KQP2AN
SE-KQ1N
SE-KQ1AN
SE-KQ2N
SE-KQ2AN
SE-KQ4N
---
Note: 1.
With start-up lock: fixed time-limit on start-up, instantaneous thereafter.
2.
The operating value for the overload detection function of the SE-@@N is 115% of the current SV.
■
Accessories (Order Separately)
Current Converters
Model
SET-3A
SET-3B
DIN rail socket
8PFA1
Current range
1 to 80 A
64 to 160 A
3-phase Transformer
Specify the primary voltage when ordering.
Only one SE relay can be connected.
Model
SE-PT400
Voltage specification
Primary side
380 to 480 V
(wide power
supply range)
Secondary power
consumption
7 VA
Secondary side 190 to 240 V
(wide power
supply range)
Adapter
Model
SE-F7AD
This Adapter is used to replace existing flush mount models with new
models.
Specifications
■
Ratings
Motor circuit
Power supply circuit
Voltage: 500 VAC max. 3-phase (primary voltage at SET current converter)
Current: 1 to 80 A or 64 to 160 A 3-phase (primary current at SET current converter)
Voltage: 100/110/120 VAC, 200/220/240 VAC, or 380/400/440 VAC 3-phase
(treat as a single phase voltage when the reverse-phase function is not needed)
Voltage fluctuation: +10/−15% max. of the rated voltage (+10/−50% max. for open-phase function)
Frequency: 50/60 Hz
±5%
See table of
Current Converter.
Configuration: SPDT
Capacity:
Refer to the table below.
100/110/120 VAC: approx. 3.5 VA; 200/220/240 VAC: approx. 7 VA; 380/400/440 VAC: approx. 11 VA
Plug-in model: Munsell 5Y7/1
Panel-mount model: Munsell N1.5
Current SV range
Output relay contact
Power consumption
Case color
Output Contact Capacity
Control power supply
100/110/120 VAC or
200/220/240 VAC
380/400/440 VAC
Contact
NO
NC
NO
NC
Manual reset
3 A (cosφ = 1.0)/2 A (cosφ = 0.3 to 0.4) at 240 VAC
3 A (cosφ = 1.0)/1.5 A (cosφ = 0.3 to 0.4) at 440 VAC ---
3 A (cosφ = 1.0)/2 A (cosφ = 0.3 to 0.4) at 440 VAC
Automatic reset
3 A (cosφ = 1.0)/1.5 A (cosφ = 0.3 to 0.4) at 240 VAC 3 A (cosφ = 1.0)/2 A (cosφ = 0.4) at 240 VAC
2
SE
■
Characteristics
Item
Overcurrent
Operating value
Operating time
characteristics
Operating time
Inverse type
100% of the current SV (SE-@@EN)
115% of the current SV (SE-@@@N)
Inverse time both at starting and during operation
For an overcurrent of 600%:
Time scale
×
1: 1 to 10 s
Time scale
×
4: 4 to 40 s
For an overcurrent of 200%:
2.8
×
t, where t is the time at 600%
overcurrent. (time SV at max.: 10 s or 40 s)
---
At the min. current SV and max. time SV, will not
operate for 80% of the operating time for a 600%
overcurrent.
Fixed time at start-up and instantaneous during
operation
In fixed time mode (start-up mode) with an
overcurrent of 600%:
Time scale
×
1: 1 to 10 s
Time scale
×
4: 4 to 40 s
In instantaneous mode:
0.5 s max. at 140% overcurrent
Operates when the current is about 30% of the set
current
---
Instantaneous type
Initial current in
start-up mode
Inertial
characteristics
Open-phase
Operating value:
Less than 50% of the current SV (at open-phase)
Operating unbalance: At high sensitivity (H): 35
±10%;
At low sensitivity (L): 65
±10%
(The unbalance for a max. 3-phase current equal to the current SV)
Operating time:
At high sensitivity (H): 2 s max.; At low sensitivity (L): 3
±1
s
(Open-phase current equal to the current SV)
Operating value: 80% max. of the rated voltage
Operating time: 0.5 s max. at the rated voltage
Operating value:
±10%
of max. current SV
Operating time:
+10
/
−5
% of max. time SV (at a time SV: 1),
+10%
of max. time SV (at a time SV: 2 to 10)
(start-up lock)
Operating value:
±5%
for 0 to 40°C;
±10%
for -10 to 50°C
Operating time:
±10%
for 0 to 40°C;
±20%
for -10 to 50°C (start-up lock)
Operating value:
±3%
for a frequency fluctuation of
±5%
Operating time:
±5%
for a frequency fluctuation of
±5%
(start-up lock)
Operating value:
±3%
for a voltage fluctuation of
+10
/
-15
%
Operating time:
±5%
for a voltage fluctuation of
+10
/
-15
% (start-up lock)
10 MΩ min. between the entire electric circuits and the mounting panel
5 MΩ min. between contact circuits, or between contacts of same pole
Refer to the table below.
6000 V max. between the entire circuits and the mounting panel
4500 V max. between contact circuits, or across contacts
Waveform: 1.2/50
μs
Motor circuit:
20 times the current SV for 2 s, applied twice with a 1 min interval
Control voltage: 1.15 times the rated control voltage for 3 hrs
10,000 operations min. (non-conducting contacts)
Malfunction: 10 to 55 Hz, 0.3-mm double amplitude each in 3 directions for 10 minutes
Destruction: 10 to 25 Hz, 2-mm double amplitude each in 3 directions for 2 hours
Malfunction: 98 m/s
2
(approx. 10G) each in 3 directions
Destruction: 294 m/s
2
(approx. 30G) each in 3 directions
Operated quickly (without lighting the LED)
Operating: –10 to 60°C (with no icing)
Storage:
–25 to 65°C (with no icing)
Operating: 35% to 85%
2,000 m max.
Approx. 170 to 230 g
Reverse-phase
Overcurrent SV accuracy
Influence of temperature
(overcurrent)
Influence of frequency
(overcurrent)
Influence of voltage
(overcurrent)
Insulation resistance
Withstand voltage
Lighting impulse withstand voltage
Overload capacity
Life Expectancy
Vibration resistance
Shock resistance
Test button operation
Ambient temperature
Ambient humidity
Altitude
Weight
Dielectric Strength
Test Area
100/110/120 VAC
Between electric circuits and the mounting panel
2,000 VAC for 1 min
Between contact circuits and other circuits
Between each pair of contacts
2,000 VAC for 1 min
1,000 VAC for 1 min
Control voltage
200/220/240 VAC
380/400/440 VAC
2,500 VAC for 1 min
2,500 VAC for 1 min
1,000 VAC for 1 min
3
SE
Engineering Data
■
Operating Characteristics
Overcurrent Operating Time Characteristics
(Inverse Type)
Time Changeover Switch:
×1
Operating time (s)
80
70
60
50
40
30
20
10
Overcurrent Operating Time Characteristics
(Instantaneous Type - Start-up Lock)
Operating time (s)
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
Time Changeover Switch:
×4
Operating time (s)
320
280
240
200
160
120
80
40
Time scale
value
10
8
6
4
2
1
Time scale
value
10
8
6
4
2
1
0
100
200
300
400
500
600
0
100
200
300
400
500
600
0
100
200
300
400
500
600
Current (% of current SV)
Current (% of current SV)
Current (% of current SV)
Open-phase Operating Characteristics
Unbalanced factor (%)
100
90
80
70
60
50
40
30
20
10
0
100
200
300
400
500
600
Open-phase Operating Time Characteristics
Operating time (s)
5
4
Low sensitivity (L)
3
Low sensitivity (L)
High sensitivity (H)
2
High sensitivity (H)
1
0
100
200
300
400
500
600
Current (% of current SV)
Current (% of current SV)
4
SE
Operation
■
Settings
Motor Relay Switch Settings
Current Scale Multiplying Factor Decal
Determine the current scale multiplying factor corresponding to the
current SV range obtained from Table 1 and paste the current scale
multiplying decal to the motor protective relay. For example,
when
the current setting range is
8
to 20 A, the decal no. is 2.
LED Indicators
The LEDs indicate
which
function is in operation.
OPEN refers to open-phase, OC refers to
overcurrent, and RVS refers to reverse-phase.
Manual Reset
The reset
button will
pop out about 4 mm
when
the
relay has
been
tripped. After the relay has
operated, reset
by
pressing this
button.
Disconnect
the power supply
before
resetting for
reverse-phase operation.
Function Setting DIP SW
The three ON/OFF switches enable or disable the
three functions. The functions can
be
enabled in any
combination.
With
the open-phase function, the H/L
switch sets the current
unbalance
factor.
When
set to
H", the motor circuit operates at 35% of the current
unbalance
factor for operation.
When
set to L", the
motor circuit operates at 65% min. of the current
unbalance
factor for operation.With the over-current
function, the x4/x1 switch sets the time changeover
value
for the start-up mode.
When
set to x4", the
operating time range is 4 to 40 s.
When
set to x1",
the operating time range is 1 to 10 s.
Setting Operating Current
Set the current-setting knob to the required
current
value.
The setting
value
is indicated
by
the product of the scale
value
and the multiplying
factor as shown in the following table. The
required trip current can
be
obtained directly
by
means of the current knob.
Decal
No.
0.25
0.5
1
2
4
8
16
4
1
2
4
8
16
32
64
Current scale value (A)
5
6
7
8
9
1.25 1.5 1.75 2
2.25
2.5
3
3.5
4
4.5
5
6
7
8
9
10
12
14
16
18
20
24
28
32
36
40
48
56
64
72
80
96
112
128 144
10
2.5
5
10
20
40
80
160
OPEN OC RVS
TRIP/RESET
CURRENT
6 7
8
9
5
10
4
FUNCTION
RVS ON
OPEN ON
H
ON
×1
sec
OFF
×
OFF
L
OFF
×1
sec
2
A
3
TEST 2
1
TIME
4 5 6 7
8
9
10
SE-KP2N
MOTOR RELAY
sec
Setting Operating Time
Set the time setting knob to the required time. The operating time
is equal to the time scale
value
times the setting on the time
changeover switch. For example, if the time scale
value
is 6 and
the time changeover switch is set to 4, the operating time is 24 s.
Test Button
Pushing the test
button
momentarily operates the trip display and
the output relay.
The operation indicators
will
not light for the test
button.
It doesn't
matter
whether
the function setting switch is ON or OFF.
Current Converter Settings
Determining the Number of
Primary Conductor Runs
Determine the number of passes and the tap setting
from the table above. For example, if the current
setting range is
8
to 20 A, there is one pass and the
tap setting is 20.
Pass the
wires
through the holes from the same
direction. It doesn’t matter
which wires
go through
which
holes.
SURRENT
CONVERTER
No.
25053
DATE
19
8
3
OMRON Corporation
SET-3A
20
40
80
MADE IN JAPAN
Tap Setting
In tap setting, insert the setting screw into
the required tap hole
with
a screwdriver.
After setting,
be
sure to replace the cover.
One conductor pass
(The conductors pass
through the holes once.)
Four conductor passes
(The conductors pass
through the holes four times.)
5
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