Current 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 I_average to zero, not more than 0,06 s;
     - - from 3,0 I_average 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.

Chart of functioning	Scheme of connection
Outside dimensions