General information about leakage relay RU-1140

Leakage relay RU-1140 designed to protect people from electric shock and other hazardous effects of the leakage current to earth in electrical networks voltage 1140 In isolated transformer, used in underground coal mines and mining enterprises in the conditions of cold, temperate and tropical climate.
The relay consists of a block breaker OIE-1140 and block compensate for capacitive currents and bypass the faulted phase BKZ-1140. Block BSO-1140 is designed for continuous monitoring active insulation resistance and leakage all under the operating voltage of the network and enable disable switching apparatus while reducing these resistances lower normalized values, as well as to control insulation resistance of the three phases of the network relative to the ground when disabled switching device and prevent its inclusion by reducing insulation resistance and leakage to the value equal to the resistance of the actuation mode warning control and lock. Block BKZ-1140 is designed to bypass the faulted phase to earth and compensate for capacitive currents a leak. RU-H:
R - relay;
In - leakage;
1140 - voltage;
X5 - the type of climatic performance (HL, T5) according to GOST 15150-69
and GOST 15543-70.

Conditions

Height over sea level is not more than 1000 m
Ambient temperature from -10 to 60°C.
Relative humidity up to 98% at 25°C in conditions of temperate and cold climate and 60°C in conditions of tropical climate;
in the mines, including hazardous gas and dust.
In terms of safety relays comply with GOST 22929-78.
For the needs of national economy and export supply relay meet TOO.48.081-79. THE 12.48.081-79

Specifications

View explosion protection output circuits of preventive control and lock disconnected from the controlled network according to GOST 12.2.020-76 - And the Degree of protection relays (except input terminals) according to GOST 14254-80 - IP54 rated supply voltage three phase power supply frequency of 50 Hz, A - 1140 Permissible voltage fluctuations supply network - from 0.85 to 1.1 ur power consumption, V·a, not more: unit BSO-1140 - 100 block BKZ-1140 - 60 Number of contacts output relay, at least: block BT-1140 - 1P., 2H., 1P. block BKZ-1140 - 3s. Most DC switching contacts of the output relay unit BSO-1140, when a voltage of 250 V and resistive load, And - 0,30 Alternating current, switched the contacts of the output relay block BKZ-1140, when the voltage from 220 to 1000 V, frequency from 50 to 1100 Hz and an active load, And from 0.03 to 0.30 Valid the change in network capacity, µf per phase from 0 to 1.0 Resistance actuation unit BSO-1140: single-phase leakage: for basic protection, Ohm, not more than 50
for backup protection, com - 28 to 35 for a symmetrical three-phase leak, ohms per phase, not less than 60 mode warning control and lock % resistance from tripping for single-phase leakage, no less - 150 Resistance actuation unit BKZ-1140, kom, no less - 4,0 Own the response time of the unit BSO-1140: when the voltage at the network terminals to 0.6 of the nominal value, due to the occurrence of the interfacial arcing faults with arc touch the walls of the shell of electrical equipment, not more of 0.10 when the resistance of single-phase leakage 1 kOhm, max: main protection of 0.07
backup protection - 0,20 operating time of the unit BKZ-1140 (triggering unit BSO-1140 until the bypass invalid phase to earth), not more than 0.10 Times since single-phase leakage of 1.0 kω to ground until the bypass faulted phase on the earth, with no more than 0,17 maximum inclination of relays in any direction about a vertical axis, deg, no more than 15 Time to failure, hrs, less: block BKZ-1140 - 10000 block of BSO-1140 - 10000 block of BSO-1140 when performing the basic function isolation control and protective switching-off - 20000 Service life, years, not less than 3 Weight, kg, not more than: unit BSO-1140 - 20 unit BKZ-1140 - 25 Vibration in the place of operation: frequency, Hz from 1 to 35 acceleration, m/S2 up to 5
The compensation device must limit the amount of leakage electricity up to 50 mA·when the resistance of the single-phase leakage from 1.0 com up to 60% of the resistance of the trigger; when this intermittent current through the resistance of single-phase leakage of 1.0 kω to bypass the faulted phase on the ground should not exceed 0.3 A.
Intermittent current through the resistance of single-phase leakage 1,0 kOhm after bypass faulted phase to earth not more than 0,03 A.
The warranty period shall be 18 months from the date of entry into operation, but not more than 24 months from date of shipment from the factory. When the export supply warranty period is 12 months from the date of putting into operation, but not more than 24 months from the date of crossing the state border. The relay is built in explosion-proof membrane switchgear low voltage mine mobile transformer substation voltage 6/1,2 kV with insulated neutral.
General view of the unit BSO-1140 similar General appearance of the block BKZ-1140 (Fig. 1). The unit consists of a casing 1, the removable parts 2 and the bezel 3. On the side wall of the casing is fixed guides squares and strips for installation unit in the substation. Removable portion of the block is a chassis on which mounted circuit elements connected to the front panel wires. On the front panel has current conducting terminals 4 for external connections block, and two clamp 5 to the grounding block.

Fig. 1.
General view of the block BKZ-1140, BSO-1140:
1 - casing; 2 - removable part; 3 - front p