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Home \ Products \ Multi-Turn General–Purpose or Explosion - Proof Electric Actuators of EP4 series \ Electric Actuators of EP4 Series. Designation Scheme.
When ordering or mentioning them in technical documentation for other kinds of production where they can be used, the electric actuators of EP4 series must have designation corresponding to the following scheme:
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EP4 X1 X2 - X3 - X4- X5 - X6- X7 - X8 X9 X10 X11 X12
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In the given scheme:
- EP4 - designates the series of the electric actuators;
- Xi, i=1,2,...,12 designates a symbol or a number of symbols described in the following table. .
| Xi | Characteristics | Value of Xi |
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| X1 |
Operating mode |
P - electric actuators for stop-regulating valves; no symbol - electric actuators for stop valves.
| | X2 |
Implosion protection |
В - explosion-proof version 1ExdIIBT4;
Н - general-purpose version;
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| X3 |
Connecting flange type |
alphanumerical code according to OST 26-07-763 (letters from the row M, A, B, V, G, D) or according to ISO 5210 (alphanumerical code from the row F05 ... F48) |
| X4 |
Upper limit of the torque limiter setting,Nm |
60 - 500 |
| X5 |
Rotary velocity of the output shaft, r/min |
4 - 180 |
| X6 |
Control module version |
E1Y - electronic control module ;
E2Y - electronic limit switches module; M1Y - mechanical control module,
whereas Y is the designation for the control module version |
| X7 |
Climtic version |
a number from the range of 1 - 4 |
| X8 |
Connection type between the electric actuator output shaft and the valves spindle. |
1 - for cams;
2 - for square; 3 - hollow shaft with key and end slots.
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| X9 |
Rotating direction of the output shaft |
1 - closes dextrally;
2 - closes counterclockwise.
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| X10 |
Exposure protection level (penetration of dust and water) as per GOST 14254-96 |
1 - IP67;
2 - IP68.
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| X11 |
Colour |
1 - blue;
2 - as specified in the order.
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| X12 |
Electric connection |
1 - cable inlets;
2 - plug connector.
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Example of designation of the electric actuator in explosion-proof version for stop valves with connecting flange of type A as per OST 26-07-763, with the upper limit of the torque limiter setting amounting to 120 Nm, totary velocity of the output shaft 45 r/min, with the electronic control module of version 11, climatic version 1, for cams, dextral closing of the valves, exposure protection level IP67 as per GOST 14254-96, blue, with cable inlets for electric connection:
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EP4B-A-120-45-E11-1 - 11211 TU 3791-001-70780838-2005
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Example of designation of the electric actuator in general-purpose version for stop valves with connecting flange of type A as per OST 26-07-763, with the upper limit of the torque limiter setting amounting to 120 Nm, totary velocity of the output shaft 45 r/min, with the electronic control module of version 11, climatic version 1, for cams, dextral closing of the valves, exposure protection level IP67 as per GOST 14254-96, blue, with cable inlets for electric connection:
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EP4H-A-120-45-E11-1 - 11211 TU 3791-002-70780838-2005
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