Power Relay EPR10
Description
The electronic power relay EPR10 is a solid state relay for high
continuous currents. It is suitable for use in utility vehicles and special
vehicles where reliability and functional safety are at a premium. At DC
24 V, the EPR10 allows a continuous load of up to 200 A.
The EPR10 is available in two different versions: EPR10-N is a relay
and has no protective function. Two performance classes are available
(up to 100 A and up to 200 A). EPR10-P is a protective relay and
monitors both the load current and the thermal load. In the event of a
critical condition, the device will automatically interrupt the circuit and
will issue a group fault signal.
Note: We are preparing a separate version for applications where the
current can flow in both directions. The present EPR10 design only
allows one current direction.
EPR10
Technical data (25 °C)
Applications
Load circuit
Powerful loads in DC 12 V and DC 24 V on-board electrical systems,
which have to be supplied continuously with currents from 75 A to 200 A
System voltage
12 V DC / 24 V DC
and which have to be switched frequently:
l Pumps
l Ventilations
Max. continuous
current
EPR10-N (relay version without protective
function) 100 A or 200 A
(please also see derating information)
l Cooling systems
Current rating range EPR10-P (with protective function)
75 A, 100 A, 125 A, 150 A, 175 A, 200 A
Max. overvoltage
36 V DC
Benefits
Max. switch-off
current
Resistive loads
(L/R < 0,3 ms)
Inductive loads
Last (L/R < 2 ms)
l 80 % less space requirement than similar conventional solid state
relays:
- no heat sink required
- low internal resistance through parallel connection of power
semi-conductors
- technically mature heat management
- cooling through connecting cables
EPR10-N - 100 A
EPR10-N - 200 A
EPR10-P - 75 A
EPR10-P - 100 A
EPR10-P - 125 A
EPR10-P - 150 A
EPR10-P - 175 A
EPR10-P - 200 A
700 A
1400 A
375 A
500 A
625 A
750 A
875 A
1000 A
100 A
200 A
75 A
100 A
125 A
150 A
175 A
200 A
l Low investment costs:
- blade fuses in sub-paths and heat sinks superfluous because the
EPR protects against overcurrent and short circuit
l Minimised maintenance costs:
- enhanced availability due to a much longer life span compared to
mechanical relays
Voltage drop
85 mV
5
- very high resistance against dust, humidity, vibration and shock
due to the sealed electronic circuitry
Max. switching
frequency
1 Hz
Reverse polarity
protection
without
l Less CO2 emission:
- due to low internal resistance
- due to minor holding power
Note: Observation of correct polarity when
connecting the device is imperative to avoid
damage of the relay.
Load output
HSS
l Flexible design:
- the device switches without a sound and can therefore be
installed in the passenger cabin without being noticed.
Leakage current
Control circuit
Connector
< 10 µA
Tyco HDSCS 3-pole part number 1-1418448-1
Pin assignment:
1 = GND (chassis)
2 = SF (output group fault)
3 = IN (control input)
Approvals
Approval authority
Logo
Directive
Control voltage
ON
6 … 32 V DC
OFF: 0 ... 3 V DC
KBA
E1 10R-05 7759
CE
ECE R10 Rev. 05
2004/108/EG
Max. overvoltage
Control current
36 V DC
at 12 V DC
at 24 V DC
at < 3 V DC
2.5 mA
4 mA
< 10 µA
Rising edge
< 5 ms
Signal outputs
Reverse polarity
protection
without
Switch type
“low side switch”
1701
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