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2.0 STORAGE PRIOR TO ERECTION
2.1 General
Circuit- breakers intended for outdoor operation are generally delivered in units, which are
designed for transport purpose.
Intermediate storage of these units should be avoided. If it is not possible, then to avoid
intermediate storage, they should be stored indoors or under roof. They must also be
stored on a plane surface above ground level to prevent breaking and water seepage. On
arrival it is important that plastic sheets are removed in order to prevent corrosion by
condensation (except for the spare parts; see separate instructions).
Storage in a humid climate without proper ventilation may lead to discoloration of the
galvanized surface. This discoloration is normally known as " White rust" consisting mainly
of Zinc hydroxide and is a result of a chemical process between the pure zinc on the surface
and moisture.
The long-term corrosion protection is not influenced, since the iron-zinc layer below the
surface remains unaffected. The presence of white rust is no reason for rejection of goods.
On arrival, each unit should be checked in the following way:
Delivery is in accordance with order and delivery documents.
Any damage in delivery, and material loss.
In cases where damage is detected or suspected, the units should be opened and damages
must be photographed. Both damage and shortages should be reported.
In general all material should be stored in an approved storage (Note 1, Page 8). The
ambient air should not be heavily contaminated by dust, smoke, corrosive or combustible
gases, vaporous and salt, otherwise the equipment must be cleaned before erection.
The original transport unit may be used for storage. The coupling joints of the assemblies,
as well as connections, are fitted with transport covers or protective caps, which shall not be
removed till erection.
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Factory packed Breaker should not be stacked one over the other.
The medium voltage circuit breaker type VBF is delivered firmly secured to the floor/ bottom
of their containers or crates and must always be transported or stored with care. The circuit
breaker is transshipped in suitable packing in the contact open position (off) and with closing
spring discharged.
Summary of Contents for OVB-SDB
Page 26: ......
Page 49: ...Fig 1 Lifting of Circuit Breaker 50 ...
Page 52: ...Fig 4 Breaker Pole Assembly Refer legend on pg 48 53 ...
Page 53: ...Fig 5 Schematic Circuit Diagram 54 ...
Page 55: ...15029 15027 15028 Fig 7 ESH Mechanism with Cabinet Refer legend on pg 49 56 ...
Page 60: ...Disconnect the motor power supply 7 Fig 15 Motor 61 ...
Page 62: ...Fig 18 The Magnetic Actuator 63 ...
Page 63: ...Notes ...
