Grounded voltage transformers with build-in protection device ZNOLPM (ЗНОЛПМ)

Description

The transformers are intended for embedding in factory-assembled switchgears, conductors and are used for powering electrical measuring devises, protection, signaling and control circuits in 50 or 60 Hz networks with insulated neutral .

The transformers are manufactured in climatic design version "У" (moderate) and "T" (tropical) according to the standard requirements of GOST 15150 location category 2 with built-in protection unit.

Mounting in any position

The position of primary winding tapping may be either on a front or back side of transformer (see transformer scheme below).

Table 1. Technical data

Parameter	Normal value
	ZNOLPM-6 ZNOLPMI-6				ZNOLPM-10 ZNOLPMI-10
Voltage class, kV	6				10
Maximum operating voltage. kV	7,2				12
Rated voltage of primary winding. V	6000/√3	6300/√3	6600/√3	6900/√3	10000/√3	10500/√3	11000/√3
Rated voltage of main secondary winding, V	100/√3
Rated voltage of additional secondary winding, V	100/3 or 100 or 100/√3*
Rated burden of main secondary winding, VA in accuracy class:** 0,2 0,5 1	10 30 75				10 30 90
Rated burden of additional secondary winding in accuracy class 3, VA	200
Rated burden out of accuracy class, VA	400
Maximum allowed continuous current, A	0,12		0,11		0,07		0,06
Vector group of transformer	1/1/1-0-0
AC current frequency, Hz	50
Resistance of resistor installed in safeguard, Ohm	11				11
Rated power of resistor, Wt	0,25				0,125
Mass, kg	22±0,5

*) Is intended for usage as second main secondary winding (for powering measuring instruments). Burden of both secondary windings, as well as required accuracy classes should be specified in the order.

**)Required burden should be specified in the order.

General view of transformer (drawing)

Go back

To top