Helical dead-end clamps DH-Dmin/Dmax(P)-Х1Х2(CS)-DA(CS)-Х3-Х4 (Technical Specifications 3449-002-27560230-2021) are designed for dead-end clamping of all sizes of conductors and ground wires on the supports of 10–750 kV overhead lines. The termination strength of DH clamps is no less than 95% of conductor breaking strength.
DH-Dmin/Dmax(P)-X1X2(CS)-DA(CS)-X3-X4
DH - helical dead-end clamp;
Dmin/Dmax - lower and upper limits of conductor or wire diameter in mm. If mounting on a conductor or wire Ofthe same diameter is provided, only this diameter is indicated without a fractional line.
P - ifpresent, indicates the presence of an armorrod;
X1 - indicates the design of the clamp:
- 0 - clamp with one load-bearing strand;
- 3 — clamp with several load-bearing strand;
- 4 - clamp with several load-bearing strand and an additional current-carrying armorrod;
- 5 - clamp with several load-bearing strand and a set of additional mounting elements.
X2 - indicates the materialof clamp helixes:
- 1 - steel wire with a protective zinc coating;
- 2 - aluminum-clad steel wire;
- 4 - wire made of non-magnetic corrosion-resistant steel.
DA(CS) - if present, indicates a variant of clamp configuration for a type 5 structure, while DA indicates a dead-end assembly, CS indicates a number of destructive loads of mounting elements in accordance with GOST 11359-75.
X3 - ifpresent, indicates a conductor brand code.
X4 - trade mark ТРИАС.
With one load-bearing strand:
DH-Dmin/Dmax(P-01(CS)-Х3-ТРИАС for wires
DH-Dmin/Dmax(P)-02(CS)-Х3-ТРИАС for conductors and wires DH-Dmin/Dmax(P)-04-Х3-ТРИАС for conductors
Helical dead-end clamps DH-Dmin/Dmax–Х1Х2-Х3-ТРИАС without armor rod
Helical dead-end clamps DH-Dmin/DmaxP–Х1Х2-Х3-ТРИАС with armor rod
With double load-bearing strand:
DH-Dmin/Dmax(P)-31(CS)-Х3-ТРИАС for wires
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DH-Dmin/Dmax(P)-32(CS)-Х3-ТРИАС for conductors and wires
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DH-Dmin/Dmax(P)-34-Х3-ТРИАС for conductors
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DH-Dmin/Dmax(P)-42-Х3-ТРИАС for АСВП conductors
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DH-Dmin/Dmax(P)-44-Х3-ТРИАС for АСВТ, АСВП conductors
Helical dead-end clamps DH with double load-bearing strand
Dead-end assemblies:
DH-Dmin/Dmax(P)-51(CS)-DA(CS)-Х3-ТРИАС for wires
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DH-Dmin/Dmax(P)-52(CS)-DA(CS)-Х3-ТРИАС for conductors and wires DH-Dmin/Dmax(P)-54(CS)-DA(CS)-Х3-ТРИАС for conductors
Helical dead-end clamps DH-Dmin/Dmax(P)-X1X2(CS)-DA(CS)-X3-ТРИАС