The boxes are designed:
- for connection or branching of control cables;
- to switch from one section of the cable veins to another;
- for the installation of primary and secondary electrical circuits;
- for local control of electric drives of shut-off and control valves;
- for switching power circuits and control circuits of electric drives of shut-off and control valves with external devices (power distribution cabinets and automation devices).
LLC «NPO» Centrotech «designs, designs and manufactures a wide range of connecting and switching boxes for use in the field of nuclear energy and general industry. Our connection boxes of instrumentation, switching boxes of shut-off and control valves are manufactured in accordance with the specifications TU 687226.001.
The boxes are manufactured in safety grade 2, 3, 4 according to NP-001-97 (OPB-88/97).
The number of terminals installed in the instrumentation boxes is selected from the series: 8, 12, 13, 16, 24, 32, 48, 64, 96, 128, 144, 192.
Number of terminals installed in the boxes of shutoff and control valves 13, 24 + 4, 24 + 5, 30 + 4, 30 + 5.
Scheme for drawing up a symbol for the switching box of electric actuators of shut-off and control valves
Switch boxes of electric drives of shut-off and control valves, standard design
| Parameter | The name of the connecting box for URAP.687226001 | Safety class according to NP-001-97 |
| УРАП.687226.182 | ККЭН(У)-24+4(32)-УХЛ2 | 4 |
| УРАП.687226.183 | ККЭН(У)-24+4(57)-УХЛ2 | 4 |
| УРАП.687226.184 | ККЭН(У)-30+4(32)-УХЛ2 | 4 |
| УРАП.687226.185 | ККЭН(У)-30+4(57)-УХЛ2 | 4 |
| УРАП.687226.196 | ККМН(У)-8-УХЛ2 | 4 |
| УРАП.687226.197 | ККМН(У)-30+4(32)-УХЛ2 | 4 |
| УРАП.687226.200 | ККМН(У)-24+4(32)-УХЛ2 | 4 |
| УРАП.687226.210 | ККЭН(У)-24(24)+5(32)-ОМ1 | 4 |
| УРАП.687226.211 | ККЭН(У)(Г)-24+5(32)-К2-В1(9-13)/2(14-18)/2(20-25)-З2(4-13)/2(7-20,5)/1(20-25)-О1 | 4 |
| УРАП.687226.302 | ККСН(У)-240(32)+60(41)-В1(5-10)/14(6-12)/9(13-18)/8(22-32)-УХЛ2 | 3 |
| УРАП.687226.303 | ККСН(У)-285(41)+5(290)-В4(5-10)/4(10-14)/5(13-18)/10(18-25)/12(22-32)-УХЛ2 | 3 |
| УРАП.687226.305 | ККМН(У)-24-В1(13-18)-Р1.5-УХЛ2 | 4 |