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Series EPC © 2003 TELEDYNE RELAYS
(800) 284-7007 www.teledynerelays.com
EPC 1
EPC\032003\Q1
Up to 110A 460 Vac
Phase Angle Controller
FEATURES/BENEFITS
External phase angle adjust
Designed for all loads
Excellent thermal performance
Internal output protection
Proportional control with voltage or current input.
DESCRIPTION
The Series EPC phase angle controller has an analog
input isolated from the mains to vary the phase angle
proportionally to the input and load voltage. The EPC
phase angle controller is designed mainly for resistive
loads. The EPC may be used with inductive loads,
but with limitations. It provides internal protection from
load transients. The conduction level is controlled by
the input. The Series EPC provides an external adjust
that allows the user to modify the cycle time for any
particular application.
APPLICATIONS
Lighting control (light dimming)
Single-phase motors
Heating control (regulation)
Part Number
Description
EPC24N10A
10A, 265 Vac
EPC24N40A
40A, 265 Vac
EPC24N40R
40A, 265 Vac
EPC46N70A
70A, 460 Vac
EPC46N110A
110A, 460 Vac
Part Number Explanation
Series EPC
NOTES
1) Line Voltage (nominal): 24 = 240 Vac; 46 = 460 Vac
2) Switch Type: N = Phase Angle Control
3) Control Range: A = 0-10 Vdc; R = 4-20 mAdc
MECHANICAL SPECIFICATION
Figure 1 EPC relays; dimensions in inches (mm)
EPC
24
N
10
A
TYPICAL APPLICATION
Figure 2 EPC relays
1.55 (39.5)
2.89
(73.5)
1.57
(40)
3.58 (91)
3.94 (100)
3.26 (82.7)
.17
(4.4)
WEIGHT: 14.46 oz. (410g)
cycle Time
Load
L1
L2
Cycle time adjust
Power
supply
+
EPC 2
SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE
© 2003 TELEDYNE RELAYS
EPC\032003\Q1
OUTPUT (LOAD) SPECIFICATION
Min
Max
Unit
Operating Range
EPC24
115
265
Vrms
EPC46
200
460
Vrms
Peak Voltage (Clamping Voltage)
EPC24
600 (450)
Vpeak
EPC46
1200 (800) Vpeak
Internal Circuit Consumption
EPC24
7
mArms
EPC46
4
mArms
Load Current Range (See Figure 8)
EPC24N10A
.01
10
Arms
EPC24N40A
.01
40
Arms
EPC24N40R
.01
40
Arms
EPC46N70A
.01
70
Arms
EPC46N110A
.01
110
Arms
Series EPC
INPUT (CONTROL) SPECIFICATION
Min
Max
Units
Control Voltage Range
EPCXXNXXA
0
10
V
EPC24N40R
1
5
V
Control Current Range
EPC24N40R
5.5
20
mAdc
Must Turn-Off Voltage
EPCXXNXXA
0.2
V
Must Turn-Off Current
EPC24N40R
4
mA
Input Resistance (Typical)
EPCXXNXXA
400
±
2%
Ohms
EPC24N40R
0.25
Ohms
Min
Max
Unit
Maximum Surge Current Rating
(Non-Repetitive, See Figure 9)
EPC24N10A
120
A
EPC24N40A
550
A
EPC24N40R
550
A
EPC46N70A
1000
A
EPC46N110A
2000
A
On-State Voltage Drop
All relays
1.6
V
Off-State Leakage Current
EPC24N10A
4
mArms
EPC24N40A
4
mArms
EPC24N40R
4
mArms
EPC46N70A
5
mArms
EPC46N110A
5
mArms
Turn-On Time
All relays (60 Hz)
8.3
ms
Turn-Off Time
All relays
41.5
ms
Operating Frequency (Trimmer must be adjusted)
All relays
47
100
Hz
Off-State dv/dt (Non-Repetitive)
All relays
500
V/
µ
s
I
2
t for Match Fusing (<8.3ms)
EPC24N10A
72
A
2
S
EPC24N40A
1500
A
2
S
EPC24N40R
1500
A
2
S
EPC46N70A
5000
A
2
S
EPC46N110A
20,000
A
2
S
OUTPUT (LOAD) SPECIFICATION (Continued) © 2003 TELEDYNE RELAYS
(800) 284-7007 www.teledynerelays.com
EPC 3
EPC\032003\Q1
Series EPC
ENVIRONMENTAL SPECIFICATION
Min
Max
Unit
Storage Temperature
40
85
°
C
Operating Temperature
40
85
°
C
Junction Temperature
40
125
°
C
Junction-Case Thermal Resistance
EPC24N10A
2.7
°
C/W
EPC24N40A
1.1
°
C/W
EPC24N40R
1.1
°
C/W
EPC46N70A
0.43
°
C/W
EPC46N110A
0.35
°
C/W
Input-Output Isolation
8
pF
Shock (@11ms)
100
G
Vibrations (10 to 4000Hz)
50
G
Setting position of the
integrated trimmer: 180
Setting position of the
integrated trimmer: 90
EXTERNAL PHASE ANGLE ADJUST
Figure 4 EPC relays
All relays
2500
Vrms
Output-Case Isolation @500m
EPC24N10A
2500
Vrms
All relays
3300
Vrms
Rated Impulse Voltage
EPC24N10A
2500
V
All relays
4000
V
Input-Output Isolation @500m
EQUIVALENT CIRCUIT
Figure 3 EPC relays
Transformer
N
P
+
Photocoupler
Supply
Synchro
+ LED
Load
Analog input
+8V
External setting
of the synchronization
ramp versus main voltage
Mains
Ramp
Analog input
tr
full cycle
half cycle
0ms
100%
50%
25%
0%
75%
U Load/ U Mains
RMS resistive load voltage
versus delay time control
RMS inductive load voltage
versus delay time control
Firing delay time
Load voltage
Resistive load
Load current
tr
tr
Inductive load
Firing delay time
Load voltage
Load current
PRINCIPLE OF PHASE ANGLE CONTROL: INPUT/OUTPUT TRANSFER CHARACTERISTICS
Figure 5 EPC relays EPC 4
SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE
© 2003 TELEDYNE RELAYS
EPC\032003\Q1
Series EPC
Firing delay time
Analog
input voltage
0V -> EPCXXXXXA
10V
8.4ms
4.2ms
0ms
Load voltage
1
5
2
3
4
Firing delay time
10ms
5ms
0ms
20mA
1
3
Load voltage
5.5mA -> EPC24N40R
2
4
5
0mA
Analog
input voltage
1. Factory presetting to 144
°

±
10% (@50Hz)of the initial
maximum firing delay angle. It can be modified by using the
external phase angle adjust. A variation in the load voltage
causes a small decrease of this angle. For 60Hz see item 4.
2. Full conduction mode voltage: Control Voltage = 10 Vdc
(+0; 5%)
3. Factory presetting to 0.2 Vdc
±
0.1V of the minimum control
input voltage. Below 0.2Vdc, the relay is off; above 0.2Vdc, the
relay is On at a firing delay angle that depends on the external
phase angle adjust.
4. Possible presetting zone by using the external phase
angle adjust.
5. Firing delay angle limit: 170
°
(0; +5%);
Conditions: EPC24 @ 135 Vac, EPC46 @ 240Vac
INPUT/OUTPUT TRANSFER CHARACTERISTICS
Figure 6a EPCXXNXXA
Figure 6b EPC24N40R
1. Factory presetting to 170
°

±
10% (@50Hz)of the initial
maximum firing delay angle. It can be modified by using the
external phase angle adjust. A variation in load voltage causes a
small decrease of this angle. For 60Hz see item 4.
2. Full conduction mode voltage: 20 mA (+0; 10%)
3. Factory presetting to 5.5 mA (+10%; 0) of the minimum
control input current.
4. Possible presetting zone by using the external phase
angle adjust.
5. Firing delay angle limit: 170
°
(0; +5%);
Conditions: @135 Vac; Control input = 5.5 mA.
Load
C1
L
Filter
C1 type : X 2
Relay
L
C2
M
C1
C0
C0
Filter 2
1
Filter 1 comprised of C1
and motor inductance
Usually
C0 = 2.2nF max
Y type
Filter 1
P
N
Relay
TYPICAL FILTER EXAMPLES
Figure 7a Low currents
Figure 7b High currents, filters in series © 2003 TELEDYNE RELAYS
(800) 284-7007 www.teledynerelays.com
EPC 5
EPC\032003\Q1
Series EPC
THERMAL CHARACTERISTICS
Figure 8a EPC24N10A
Tcase max (C)
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
10
0
1
10
20
30
40
50
60
70
80
90 100110 125
9
8
7
6
5
4
3
2
1
0
85
240 Vac
440 Vac
87.5
90
°
C
2
°
C/W
4
°
C/W
Without Heat Sink
5
°
C/W
0
°
C/W
Ambient Temperature (
°
C)
Load Current (Arms)
Power Dissipation (W)
0
1
10
20
30
40
50
60
70
80
90 100 110 125
Tcase max (
°
C)
0
5
0
5
10
15
20
25
30
35
40
10
15
20
25
30
35
40
45
50
55
60
85
75
65
90
°
C
0.4
°
C/W
0.9
°
C/W
1
°
C/W
1.5
°
C/W
2
°
C/W
4
°
C/W
Without Heat Sink
0
°
C/W
1.2
°
C/W
0.7
°
C/W
Ambient Temperature (
°
C)
Load Current (Arms)
Power Dissipation (W)
10
20
30
50
60
10
20
30
40
50
0
0
0
10
20
30
40
50
60
70
80
90
100
90
°
C
Max. case temperature (
°
C)
60
70
80
90
100
110
120
70
100
40
80
90
110
85
1.2
°
C/W
0.75
°
C/W
0.2
°
C/W
2
°
C/W
0.1
°
C/W
0.9
°
C/W
0.55
°
/W
0
°
C/W
Without Hea
t Sink
Ambient Temperature (
°
C)
Load Current (Arms)
Power Dissipation (W)
110A
70A
Non-Repetitive
Repetitive with initial Tj = 70C
0
50
100
150
Apeak
1
10
0.1
0.01
t (s)
200
400
600
0
Non-Repetitive
Repetitive with initial Tj = 70
°
C
Apeak
1
10
0.1
0.01
t (s)
500
1000
1500
0
Repetitive with initial Tj = 70
°
C
Apeak
1
10
0.1
0.01
t (s)
Non-repetitive
0
500
1000
1500
2000
Repetitive with initial Tj = 70
°
C
Apeak
1
10
0.1
0.01
t (s)
Non-Repetitive
SURGE CURRENT
Figure 8b EPC24N40A, EPC24N40R
Figure 8c EPC46N70A, EPC46N110A
Figure 9a EPC24N10A
Figure 9b EPC24N40A, EPC24N40R
Figure 9c EPC46N70A
Figure 9d EPC46N110A
NOTES:
1. Electrical specifications at 25
°
C unless otherwise specified.
2. Phase cutting generates RFI. Filters are recommended.
3. For inductive loads, contact factory.