EFAC230 Datasheet, PDF (1/2 Pages) List of Unclassifed Manufacturers – Current and Voltage Controls Frequency Monitoring Control

Current and Voltage Controls
Frequency Monitoring Control
Type EFA
• Microprocessor-based frequency
measurement
• 10-position rotary switch for selection of bandwidth
• Separate setting of upper/lower limits
• Monitors on own power supply
• 2 separately adjustable time functions (0.1-30 s)
• Quartz-controlled digital circuit
• Selectable centre frequency 50/60 Hz
• Output: 2 x 5 A SPDT relays (one relay for each level)
• For mounting on DIN-rail in accordance with
DIN/EN 50 022
• 45 mm Euronorm housing
• LED-indication for power supply ON
• Two LED's indicating fault and/or status of relay
output (flashing when timing)
• Galvanically separated power supply
Product Description
Ordering Key
EFA is monitoring the fre-
quency of an AC power sup-
ply with the possibility of sepa-
rate adjustment of upper/
lower limits. This relay offers
the user many application
possibilities e.g. in connec-
tion with wind-driven genera-
tors or similar equipment.
Housing
Function
Type
Output
Power supply
EFA C 230
Type Selection
Mounting
For DIN-rail
Output
2 x SPDT
Measuring range
50-60 Hz
Supply: 24 VAC
EFA C 024
Supply: 115 VAC
EFA C 115
Supply: 230 VAC
EFA C 230
Input Specifications
Output Specifications
Input
Through terminals A1 & A2
Measuring range
Bandwidth selectable by
2 separate rotary switches
Measuring on own power
supply
Upper level Lower level
0.5 Hz
1.0 Hz
1.5 Hz
2.0 Hz
2.5 Hz
3.0 Hz
4.0 Hz
5.0 Hz
6.0 Hz
10.0 Hz
0.5 Hz
1.0 Hz
1.5 Hz
2.0 Hz
2.5 Hz
3.0 Hz
4.0 Hz
5.0 Hz
6.0 Hz
10.0 Hz
Output
2 x SPDT relay
Rated insulation voltage
250 VAC (contact/elect.)
Contact ratings (AgCdO)
Resistive loads
AC 1
DC 1
Small inductive loads AC 15
DC 13
µ (micro gap)
5 A, 250 VAC
5 A, 24 VDC
2 A, 250 VAC
3 A, 24 VDC
Mechanical life
≥ 40 x 10⁶ operations
Electrical life
≥ 10⁵ operations
(at max load)
Operating frequency
≤ 7200 operations/h
Dielectric strength
Dielectric voltage
2 kVAC (rms)
Rated impulse withstand volt. 4 kV (1.2/50 µs)
Supply Specifications
Power supply
Rated operational voltage
Through pins A1 & A2 024
115
230
Voltage interruption
Dielectric voltage
Rated impulse withstand
voltage
Rated operational power
Overvoltage cat. III (IEC 60664)
(IEC 60038)
24 VAC ±15%, 40 to 70 Hz
115 VAC ±15%, 40 to 70 Hz
230 VAC ±15%, 40 to 70 Hz
≤ 40 ms
≥ 2 kVAC (rms)
4 kV (1.2/50 µs)
3 VA
Specifications are subject to change without notice (26.10.99)
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