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| Printable
Format |
| Power
Protection - Earth Leakage Detector |
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The
PROTIME’s Earth Leakage Detector can be used to sense the
resistance between earth and live or dead (Isolated) parts/cables.
For highly critical equipment and/or their usage in hazardous
environment, the body of equipment or exposed parts are earthed
to avoid accidents due to fire and safety of human beings. The
ELD is
used to keep vigilance on these earthed parts/body. If the resistance
between these two increases, it will energise to give an alarm
or to terminate the process immediately. |
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Special
Features |
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Adjustable
Sensitivity |
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±
2% Accuracy |
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Test
& Auto/Manual Reset facility |
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Designed
for high reliability, as relay energizes only under fault conditions |
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Optional
facility for analog Resistance meter for measurement of resistance. |
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Technical
Data |
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Supply Voltage(control
supply) |
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110V / 220V / 380V
/ 440V AC, 50Hz or 12V DC / 24V DC. |
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Permissible Supply
Variation |
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± 25% |
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Output Contacts |
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Two changeover contacts / One
change over with Buzzer |
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Switching duty |
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6A resistive at 24V DC or 240V
AC |
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Relay Status |
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De-energised in normal conditions. |
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Set Point(Range) |
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1K-100 Ohm(or As per required) |
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Time delay (optional) |
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0.1-10 sec. Settable |
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Reset |
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Automatic/Manual. |
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Setting Accuracy |
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± 5% of full scale. |
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Dimension |
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150mm(W) X 100mm(H) X 100mm(D). |
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Operation |
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The
ELD senses continuously resistance between earth & body
, Since if earth gets disconnected , this Resistance will increase.
The ELD will give output for tripping or audio alarm when such
resistance rises above the limit set on the dial. The time delay
for relay output is optional feature. The ELD gives low voltage
DC to the part/body to be sensed, & measures resistance
with reference to earth. |
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Connection
diagram: |
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Note:- Design and specifications may change due to our continuous
developmental efforts.
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