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Current Relay
AL-1


AL-1 - сurrent relay
AL-1

Relay AL-1 is intended for using in the AC circuits of the relay protection and emergency control system as a unit which reacts on current increase in the controlled circuit.

Average main error of actuating current in any digitized point of a scale doesn't exceed 5% of a setting for the AL-1 relay.

Current variation (calculated as a percentage of the average value of the actuating current) must not exceed 2,5 %.


Technical characteristics

Rated current, А The range of the settings of actuating current, А Discrete step Relay power consumption in current circuits, VА, not more than, at current value Relay power consumption in the circuit of operational supply voltage, VА (W), not more than Thermal stability, А
I=Iaverage.min I=Irated For a long time Within 1 s
0,4
1,0
5,0
10
16
0,05 - 0,40
0,125 - 1,0
0,5 - 4,0
2,5 - 20
12,5 - 100
0,005
0,0125
0,05
0,25
1,25
0,1
0,1
0,1
0,2
0,3
0,2
0,3
0,8
0,5
0,8
 
 
4(4)
 
 
0,5
1,1
5,5
11
18
40
50
200
300
400

Main parameters

Rated supply voltage: AC 110, 220 V
DC 100, 220 V
Relay actuating time, not more than: at current value 1,2 Iaverage / 3 Iaverage 0,05 / 0,03 s
Quantity/type of the contacts 1 make contact and
1 break contact
Electrical endurance, not less 20 000 cycles
Mechanical durability, not less 100 000 cycles
Accuracy class 5
Reset factor, not less 0,9
Protection level: relay / terminal board IP40 / IP10
Operating temperature range –40...+55 ˚С
Weight, not more than 0,8 kg

Allowable limits of operational supply voltage are within 0,8 … 1,1 of nominal one.

Disconnection time of the make contact of the relay at reduction of the measured current makes:
     - from 1,2 Iaverage to zero, not more than 0,06 s;
     - - from 3,0 Iaverage to zero, not more than 0,1 s.

The relay false actuating doesn’t take place under condition of switching on/off supply voltage and short-term disappearance of supply voltage. At the same time value of the measured current which is fed on the relay can be in the range from 0 to 80% of value of an actuating setting.

The relay AL-1 provides the commutation of the electric loads at the current (not more than 2 A) and AC/DC voltage (from 24 to 250 V) with power:
     - in DC circuit: 60 W at t≤0,005 s and not more than 30 W at t≤0,02 s;
     - in AC circuit: not more than 300 VA at cosφ ≤ 0,5.

AL-1 - chart of functioning AL-1 - scheme of connection
Chart of functioning
 
Scheme of connection
 
AL-1 - outside dimensions
Outside dimensions