ZWAE OW Installation And Service Manual
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ZWAE OW Installation And Service Manual

Indoor disconnector
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Zakład Wytwórczy Aparatów Elektrycznych Sp. z o.o.
INSTALLATION AND SERVICE MANUAL
OW
Indoor disconnector
Manual Nr DTR.01.01.05.EN

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  • Page 1 Zakład Wytwórczy Aparatów Elektrycznych Sp. z o.o. INSTALLATION AND SERVICE MANUAL Indoor disconnector Manual Nr DTR.01.01.05.EN...
  • Page 2 This personnel must know exactly all safety rules and rules for maintaining the device in accordance with these instructions. The problem-free and safe operation of this device requires proper transport, proper storage, construction and assembly as well as careful service and maintenance. zwae.com.pl...

  • Page 3: Table Of Contents

    Zakład Wytwórczy Aparatów Elektrycznych Sp. z o.o. Table of Contents 1. TRANSPORT AND STORAGE ......1.1.

  • Page 4: Transport And Storage

    Zakład Wytwórczy Aparatów Elektrycznych Sp. z o.o. 1. TRANSPORT AND STORAGE 1.1. Unpacking and inspection Immediately after receiving the apparatus, check the delivery compliance with the packing list. Then check whether the apparatus has not been mechanically damaged during transport and the check data on the name- plate with the order.

  • Page 5: Transport And Storage

    Zakład Wytwórczy Aparatów Elektrycznych Sp. z o.o. To take the disconnectors off the pallet, strap- ping tapes have to be cut off (item 3). Then the screws (item 2) have to be unscrewed from the supports (item 1). Figure 3. Two OWC disconnectors on supports, fastened to the pallet with a tape.

  • Page 6: Description

    2.2. Construction and principle of operation The OW type disconnectors are switches with a secant movement of the knives of the current path. The base of the disconnector (item 1) is a welded steel frame in which sides the main shaft is mounted (item 2). On the transverse shelves of the base there are resin support insulators (item 3), on which there is a disconnector‘s current path con-...

  • Page 7: Ambient Conditions During Operation

    Zakład Wytwórczy Aparatów Elektrycznych Sp. z o.o. Disconnectors Disconnectors OWC-17/1600 OWB-12/800 OWC-36/1600 OWA-17/800 OWA-24/800 Disconnectors OWG-12/1600 OWG-12/2000 OWG-24/1600 Figure 6. Types of contacts for disconnectors OWA, OWB, OWC 2.3. Ambient conditions during operation Disconnectors type OWA, OWB, OWC are adapted for installation in indoor distribution devices, in which the following ambient conditions exist: - temperature within the range of: -5 C to + 40...

  • Page 8: Accessories, Additional Equipment

    Zakład Wytwórczy Aparatów Elektrycznych Sp. z o.o. 3. ACCESSORIES, ADDITIONAL EQUIPMENT Disconnector OWA Operating mechanism NSW30 Driver lever Terminal Insulated driver rod Figure 7. Connection of NSW30 operating mechanism with disconnector Cam switch LK16, number of contacts 3NO+3NC Main shaft Figure 8.
  • Page 9 Zakład Wytwórczy Aparatów Elektrycznych Sp. z o.o. Auxiliary switch LP1, max. number of contacts 16 NO + 16 NC Tie rod Lever Figure 10. Connection of the auxiliary switch LP1 with the disconnector by means of a tie rod. Operating mechanism NSW30 Terminal 3.

  • Page 10: Installation And Adjustment

    4.1. Preparation of the supporting structure and assembly of the disconnector The OW type disconnectors are designed for operation in horizontal and vertical positions, with moving con- tacts at the top. The design of the supporting structure should take into account the maintenance of appropri- ate ground isolation distances, and the construction itself should have adequate stiffness.

  • Page 11: Connecting Feeding Wires And Grounding Wire

    Zakład Wytwórczy Aparatów Elektrycznych Sp. z o.o. 4.2. Connecting feeding wires and grounding wire Before screwing the rails, the terminals (item 3) of the disconnector should be cleaned of any contamination by a method that does not damage the silver coatings. It is recommended to use a soft, lint-free cloth for this purpose.
  • Page 12 Zakład Wytwórczy Aparatów Elektrycznych Sp. z o.o. WARNING ! Before switching on the disconnectors to work under volt- age, the user should make sure that the assembly has been made correctly and check whether the condition of the dis- connectors and operating mechanisms as well as the meth- od and place of installation correspond to the conditions of safe operation.

  • Page 13: Operating Manual

    Zakład Wytwórczy Aparatów Elektrycznych Sp. z o.o. 5. OPERATING MANUAL During the switching operations, it is advisable to do visual inspection of external of disconnector in each case, paying attention to the correct achievement of limit positions by the apparatus, as well as condition of soiling of insulators, insulating rods and condition of contacts and operating mechanisms.

  • Page 14: Utilization

    70 µΩ Table 1 Resistance of OW type disconnectors 7. UTILIZATION The OW disconnector is made of materials that are recyclable. The main materials from which the disconnec- tors are built are: - steel (painted, galvanized); - copper (painted, silver-plated);...

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