500kv Oil-Immersed Paper of Current Transformers CT

4. Technical indicators

4.1. Rated secondary load of the protection winding (10 PR) – 20VA. The rated

maximum current ratio for the protection winding (the ratio of the max short-circuit current to

the rated primary current of the CT, at which the CT error is less than 10% at a given

secondary load) is 30.

The intrinsic resistance of the current transformer is not more than 36 ohms. The rated secondary

load of the measurement and metering windings is 30VA.

– Wind head – V = 29m / s.

– Ice-covered area – II (10 mm)

– Minimum temperature – 25 0 FROM

– Maximum temperature – +50 0 FROM

– Seismic – 7 points on the MSK-64 scale

– Equipment insulation – II * (specific creepage distance 2.25 cm / kV) in accordance with GOST 9920-89

5. Customer requirements

5.1 Products must be manufactured on the basis of genuine

technical and design documentation of the plant – manufacture (developer) at FA (actual

analogue) with KG (readiness factor) , indicating the numbers of the drawings, confirmed by a

letter of guarantee or the manufacturer’s general power of attorney for the right to sell.

5.2 Product quality must comply with technical

conditions of the manufacturer and confirmed:

a) a certificate of conformity for the production of equipment – a copy certified by the

manufacturer;

b) a certificate of conformity (conformity of the quality system of the zovod production to

the requirements ISO 9001-2015) – a copy certified by the manufacturer;

in)  certificate of origin – a copy certified by the manufacturer;

d)  manufacturer’s quality certificate – copy; e)

equipment passport.

5.3 The warranty period for products must be at least

5 years from the date of installation.

5.4 The supplied materials and equipment (material and technical resources) must

be new, not previously used, released no later than 2020, production models reflecting all the

latest modifications and not discontinued by the manufacturer at the time of delivery.

5.5 The supplier (manufacturer) must ensure compliance

supplied (manufactured) materials and equipment to the requirements of the technical conditions, provided

that the consumer observes the conditions of installation, repair, operation, transportation and storage,

established in the Guidelines for

exploitation.

Reference:

Symbol Explanation

Note: 1 The Company reserves the right to change the parameters in the table.

2 When the parameters required by the customer are different from that in the table, they can be negotiated

according to the requirement of the customer.

3 There are several current ratios for one-time switch of the transformer.

4 We also can provide with products which meet the requirement of IEC and ANSI.

Outline and Dimensional Drawing

 
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