6-10 kV Dry cast current transformers ТОЛ, ТПЛ, ТПОЛ,ТЛШ type

6-10 kV Dry cast current transformers ТОЛ, ТПЛ, ТПОЛ,ТЛШ type

Current transformers ТОЛ-Э-12, ТПЛ-Э-12, ТШЛ-Э-12 types are designed for AC scale conversion with a view to its further measure and (or) transmission to protection, automation, alarm or control devices in AC 50Hz electric circuits at 6-10 kV voltage class.
The range of rated primary currents 5 - 1000A, rated secondary current 5A, the number of secondary windings - up to 4, rated secondary load with power factor cosφ = 0,8 - 10VA for measuring, 15VA for protection needs.
Accuracy classes for measuring windings - 0,2S - 5P; to protective windings - 5P - 10P.

The transformers technical data

Parameter name Parameter
ТОЛ-Э
ТПЛ-Э
ТШЛ-Э
Rated voltage, kV 10
Maximum voltage (Um), kV 12
Rated primary current, A 10; 20; 50;
75; 100; 150;
200; 300; 400;
600; 800; 1000
20; 30; 50; 75;
100; 150; 200;
300; 400; 600;
800; 1000
1000; 1500;
2000; 3000;
4000; 5000
Rated secondary current, A 5
Rated frequency, Hz 50
Number of secondary windings, not more 4
Rated secondary load with power factor cos φ = 0,8 V•A:
- measurement windings
- protective windings

 

 

10
15

Accuracy class:
- for measurement and accounting
- for protection

 

0,2S;0,2;0,5S;0,5
5P;10P

Accuracy limit factor for protective windings 10
instrument safety rate (FS) 10

The transformers are a devices consisting of a magnetic core with a primary winding, mounted thereon, and a secondary windings, whose number can be from two to four, depending on the order. Transformers type ТПЛ-Э-12 and ТШЛ-Э-12 have a passing construction. ТОЛ-Э-12 transformers have a support structure, a primary winding inputs are located on the top surface of the transformer. The secondary windings are designed for measure and protection.
The active part is placed in the epoxy compound cast body, which is also the main insulation and protection of the windings from mechanical and environmental influences. The secondary windings are placed each in its own magnetic core.
Transformers have a transparent cover with sealing possibility, to protect the secondary measuring winding outlets from unauthorized access.
The transformers are designed for:
- Altitude up to 1000m;
- Ambient temperature from -40°C to + 40°C (category У2 GOST 15150);
- Relative humidity 100% at 25°C;
- The transformer space position - any.
Transformers are made by ДСТУ IEC 60044-1:2008