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CLD - DC Current Level Relay
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Current Monitoring Relays
> CLD - DC Current Level Relay
Application
: Current Level Relay for monitoring a DC current.
Description
:
The CLD family is a range of dual level current monitoring relays. It is intended for monitoring a dc load for both under and over-current conditions.
Selection:
For the product to suit your application please see the selection chart below or contact sales:
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Control Supply
U/C Trip Level
Trip Delay Time
Current Rating
Relay Contacts
Enclosure Type
O/C Trip Level
24Vac
24Vdc
CLD2137
24Vdc
10-100%
0.1 sec
10mA dc
1 pole C/O
9
10-100%
CLD2237
24Vdc
10-100%
0.1 sec
20mA dc
1 pole C/O
9
10-100%
CLD2337
24Vdc
10-100%
0.1 sec
50mA dc
1 pole C/O
9
10-100%
CLD2437
24Vdc
10-100%
0.1 sec
100mA dc
1 pole C/O
9
10-100%
CLD2537
24Vdc
10-100%
0.1 sec
200mA dc
1 pole C/O
9
10-100%
CLD2637
24Vdc
10-100%
0.1 sec
500mA dc
1 pole C/O
9
10-100%
CLD2737
24Vdc
10-100%
0.1 sec
1A dc
1 pole C/O
9
10-100%
CLD2837
24Vdc
10-100%
0.1 sec
2A dc
1 pole C/O
9
10-100%
CLD2937
24Vdc
10-100%
0.1 sec
5A dc
1 pole C/O
9
10-100%
Trip Delay Timer
Where fitted the ‘Trip Delay Timer’ will inhibit the output contacts from releasing immediately a fault is detected.
The trip delay time is adjustable up to either 10 or 30 seconds depending on the model and will be either a ‘Standard’ delay or a ‘True’ delay type.
The 'Standard' delay type will require around 50% nominal supply voltage to be maintained for its operation, in the case of a total loss of power the unit
will trip with a minimal delay of approximately 0.5 seconds. This type of timer will allow the unit to ride through a short term voltage dip but not a total
power loss.
The 'True' delay timer is not dependent on the supply voltage for its operation. The timing function will be available in the case of either a partial or total
supply failure. This type of timer will allow the unit to ride through either a short term voltage dip or a total loss of power lasting up to 30 seconds.
Power On Delay Timer
Where fitted, the ‘Power On Delay Timer’ will delay the output contacts from energising immediately the supply voltage is applied to the unit for a period
of up to 30 seconds.
The supply voltage will have to satisfy the conditions set by the supply monitoring relay for a healthy supply continuously for the ‘Power On Delay’ timing
period before the output contacts will energise.
If the unit detects a fault and releases the output contacts the supply voltage will once again have to satisfy the requirements of a healthy supply continuously
for the ‘Power On Delay’ timing period before the output contacts will re-energise.
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