OVERHEAD DISCONNECTING SWITCH

OVERHEAD DISCONNECTING

SWITCH

www.canadianpowermfr.ca

IDP DISCONNECTING SWITCH Installation 15 kV through 245 kV

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INTRODUCTION All ferrous parts of Canadian Power Manufacturing disconnecting switch have been hot dip galvanized according to the international standard ISO 1461, to provide them a long service life. The products are manufactured under standards: ANSI C37.30.1, ANSI C37.30.2, ANSI C37.32, ANSI C37.34, CSA C83.71, CFE V4200-25, NMX-102-ANCE, NMX-564-ANCE, IEC 62271-102, IEC 61109, IEC 60129. For the indoor disconnecting switch, the ferrous parts are rust protected by an electrolytic zinc coating of 20 μm thickness. All the connections of metallic parts and insulators are achieved by elastic cement in order to absorb the expansion coefficient variations of the different materials. The robust construction, easy assembly, the absence of corrosions between galvanic parts and the hard-routine tests during the manufacture process guarantee a long life without any maintenance operation. The products have main features: - Compact design - High mechanical endurance - High electric parameters - High quality porcelain insulators - Connection to fixed terminals - Operates both in vertical and horizontal position - Optional earthing switches from both sides - Operating devices: manual or motor - Single and three pole versions The disconnectors of Canadian Power Manufacturing are designed for normal operating conditions in compliance EN 62271-1 Class "Minus 25 Outdoor". The max. ambient temperature is 40°C; the average value over 24 hours is max. 35°C. The values on insulation strength are related to sea level. For altitudes of up to 1000 m any reduction in insulation caused by the reduced insulating property of the air is insignificant and can be ignored. For installation at altitudes above 1000 m it is necessary to correct the values given for the rated power frequency withstand voltage and the rated lightning impulse withstand voltage. According to EN 62271-1 the insulating property of the clearance at

an altitude of e.g. 2000 m is reduced by the factor 0.81. SINGLE POLE OUTDOOR DISCONNECTING SWITCH Single pole disconnector suitable for be installed in any position, between vertical and horizontal, (this last means with the blades in the inferior part). It always equips double blade and an interlocking device that prevent the involuntary opening, caused by the wind action. The single pole outdoor disconnector incorporates insulators type POLA/PORA according to IEC 60273, the units with contamination level I, have a creepage distance of 16-20mm/kV and the units with a contamination level II with a creepage distance of 25mm/kV. Also, it could be provided of hooks for load opening with Load Buster (LB models). The products can be mounted horizontal or inverted vertical for different contamination levels. THREE POLE OUTDOOR DISCONNECTING SWITCH The three pole disconnectors are mainly designed for a vertical mounting. The following elements could be changed or incorporated: - Fuse holder - Earthing connection with locking device to prevent the connection to earth when the disconnector is closed or to close the device when the earth is connected. - The earthing disconnector can be placed in the entrance or exit of the main switch. - The earth disconnector is operating by means of an independent control. - The operating axis could be placed at left or right side. - The operating axis could be extending until 250, 500, 750 or 1000mm, these extensions include a support to avoid it bend down. - The outdoor units are provided with different drills to permit the direct fixing to a post or to a frame previously fix to a post. THREE POLE INDOOR DISCONNECTING SWITCH Three pole disconnectors for vertical installation, with double blade that operates simultaneously in the three phases by means of isolating connecting rods,

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joint by a metallic axis for the operating with manual control. THREE POLE INDOOR DISCONNECTING SWITCH WITH FUSE-BASES Normally, these disconnectors are supplied with RESA insulators, 1800 N of failing load. Under order may be supplied with same type insulators but 3750 N of failing load. The insulators are vertically assembled on the chassis and incorporate fuses holders 0.45mm - 0.55mm jaw. ADVANTAGES OF DISTRIBUTION DISCONNECTING SWITCH Canadian Power Manufacturing disconnecting switch provide ease of operation with rugged, dependable service. Rating – High current carrying capacity of 1200 amperes continuous and 61000 amperes momentary. Blade design – Truss-type construction of formed channel blade provides increased width at hinge for greater rigidity. The result is positive alignment during closing, and a guard against side thrust deflection. Blades are hard drawn copper, silver plated at contact point. Hard drawn copper contacts – Consistent conductivity is assured through utilization of hard drawn copper forming one-piece, stationary contacts and terminal pads. Design reduces current interchange points to a minimum. Silver to silver contacts – High pressure line contact on clip and circular line contacts on hinge have silver on-lay for silver to silver contact at current transfer points. Contact surface are self-cleaning and self-wiping. Tin plated terminal pads – Accommodate terminals for either aluminum or copper conductors. Positive blade lock and pryout – Blade latch prevents switch opening under heavy short circuit conditions. Easy opening is assured through pryout assist.

90º blade stop – Furnished with switch. Stops can be field removed for 180º blade travel. Insulators – The insulators have customized characteristics based on requests. Steel channel base – Base is rugged hot dipped galvanized steel channel. APPLICATION One - and three – pole disconnectors are designed for closing and opening not loaded electrical circuits in outdoor A.C. networks. In open position disconnectors form visible and safe isolating distance which disconnects circuit from voltage on the output side. Optional integrated earth switches are intended for earthing previously disconnected electrical network. PERFORMANCE The disconnectors type of Canadian Power Manufacturing are vertical break switches. The base of disconnector is a steel frame in which there is installed (in bearings) the operating shaft ended with operating lever. Disconnector’s shaft from both sides is ended with the knurling, which allows easy connection of lever with the drive. The operating lever can be rotated every 10 degrees within full turn. Support porcelain isolators with moving and unmoving contacts are fixed into the base. Between moving and unmoving contacts there is a line contact and its proper pressure is achieved via the pressure springs. Contacts and terminal are silvered. The disconnector’s moving contacts are connected via isolating rods to operating shaft. Rotation move of shaft is carried over via rods on moving contacts putting them in motion within perpendicular to a base plane. Full operating angle of shaft is 102°. The construction of disconnectors allowed mounting up earthing switches which can be mounted on moving contact side (the up-earthing switches) or on unmoving contact side (the down earthing switches). Between operating shaft of disconnector and operating shaft of earthing switch there is mechanical interlocking ensuring proper sequence of connection.

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Disconnectors are suitable for working in horizontal or vertical position and have clamps suitable for connect flat buses mounted in parallel to the base. Disconnectors and earthing switches can be controlled by separate manual operating devices. Canadian Power Manufacturing Disconnect Switches are designed for: Transformer switching — transformer load currents up through the continuous current rating of the disconnect switch, as well as transformer magnetizing current associated with the applicable loads. Line switching — load splitting (parallel or loop switching) and load dropping of currents up through the continuous current rating of the disconnect switch; also line dropping (charging currents typical for distribution systems of these voltage ratings). Cable switching — load splitting (parallel or loop switching) and load dropping of currents up through the continuous current rating of the disconnect switch; also cable dropping (charging currents typical for distribution systems of these voltage ratings) Capacitor-bank switching — switching of single capacitor banks, shown as below: In single-pole switching of ungrounded-primary three-phase transformers or banks (or single-phase transformers connected line to line), circuit connections or parameters may, in some cases, produce excessive overvoltage. In particular, for the following applications above 22 kV, single-pole switching by any means—including the loadbuster tool—should be performed only under the conditions stated in italics: – Switching unloaded or lightly loaded delta-connected or ungrounded-primary wye-wye connected three-phase transformers or banks (or line-to-line connected single-phase transformers), rated 150 kVA or less three-phase, or 50 kVA or less single-phase—or of any kVA rating when combined with unloaded cables or lines—where maximum system operating voltage exceeds 22 kV (Single-pole switching should be performed only if each phase is carrying 5% load or

more, or if the transformer or bank is temporarily grounded at the primary neutral during switching.) – Switching loaded or unloaded ungrounded-primary wye-delta connected three-phase transformers or banks—alone or combined with unloaded cables or lines—where maximum system operating voltage exceeds 22 kV (Single-pole switching should be performed only if each phase is carrying 5% load or more and if the lighting-load phase is always switched open first (or switched closed last), or if the transformer or bank is temporarily grounded at the primary neutral during switching.) INNOVATIONS The hook stick operated switch is the simplest of all disconnect switches. It is also one of the oldest types, but over the years few changes have been made to improve the performance of this important component of the high voltage electrical system. Canadian Power Manufacturing has done extensive research on contact designs and has developed a true self-wiping contact with great performance characteristics. One aspect of performance of a disconnect switch relates to its ability to maintain low contact resistance despite age and environment. The major factor affecting resistance values is contamination between the contacts of the switch. Canadian Power Manufacturing research shows that the design of the contacts determines how well they perform. The graphs below show the contact resistance of a traditionally designed contact compared to the improved Canadian Power Manufacturing design during a contamination test.

The graphs above show the contact resistance of a traditionally designed contact compared to the improved

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Canadian Power Manufacturing design during the contamination test. * The amount of contamination had no effect on the Canadian Power Manufacturing contacts, while the traditional wide contacts showed random high resistance values that can cause contact pitting and

burning, eventually resulting in switch failure. Our proven reliable contacts are featured on all types of Canadian Power Manufacturing hookstick operated switches.

ELECTRICAL RATINGS

OVERHEAD DISCONNECTING SWITCH APPLICATIONS Continuous Current Rating, Amperes 600(630) 600(630) 1200(1250) 1200(1250) 2000 2000

STYLE DISTRIBUTION TRANSMISSION Nominal, Kilovolt 23 34,5 23 34,5 23 34,5 Maximum, Kilovolt 25,8 38 25,8 38 25,8 38 BIL, Kilovolt 150 200 150 200 150 200 Flashover at dry condition 60Hz, Kilovolt

70 95 70 95 70 95

Flashover at wet condition 60Hz, Kilovolt

60 80 60 80 60 80

Mechanical endurance Class M1 Class M1 Class M1 Class M1 Class M1 Class M1 Momentary current, Amp 65000 65000 81900 81900 104000 104000 Leakage distance, In. ≥25.90 ≥34.45 ≥25.90 ≥34.45 ≥25.90 ≥34.45 Weight, lb

ORDERING NUMBER

Cat. No. outdoor porcelain 1-phase disconnector

IDP–PN/ 1DC26

IDP–PN/ 1DC35

IDP–PN/ 1M2C26

IDP–PN/ 1M2C35

IDP–PN/ 12M26

IDP–PN/ 12M35

Cat. No. outdoor polymeric 1-phase disconnector

IDP–PR/ 1DC26

IDP–PR/ 1DC35

IDP–PR/ 1M2C26

IDP–PR/ 1M2C35

IDP–PR/ 12M26

IDP–PR/ 12M35


IDP–PN/ 2DC26

IDP–PN/ 2DC35

IDP–PN/ 2M2C26

IDP–PN/ 2M2C35

IDP–PN/ 22M26

IDP–PN/ 22M35


IDP–PR/ 2DC26

IDP–PR/ 2DC35

IDP–PR/ 2M2C26

IDP–PR/ 2M2C35

IDP–PR/ 22M26

IDP–PR/ 22M35

Cat. No. outdoor porcelain 2-phase bypass disconnector

IDP–BN/ 2DC26

IDP–BN/ 2DC35

IDP–BN/ 2M2C26

IDP–BN/ 2M2C35

IDP–BN/ 22M26

IDP–BN/ 22M35

Cat. No. outdoor polymeric 2-phase bypass disconnector

IDP–BR/ 2DC26

IDP–BR/ 2DC35

IDP–BR/ 2M2C26

IDP–BR/ 2M2C35

IDP–BR/ 22M26

IDP–BR/ 22M35


IDP–PN/ 3DC26

IDP–PN/ 3DC35

IDP–PN/ 3M2C26

IDP–PN/ 3M2C35

IDP–PN/ 32M26

IDP–PN/ 32M35


IDP–PR/ 3DC26

IDP–PR/ 3DC35

IDP–PR/ 3M2C26

IDP–PR/ 3M2C35

IDP–PR/ 32M26

IDP–PR/ 32M35

Cat. No. indoor porcelain 3-phase D.S. w/ fusebase

IDP–IE/ 3DC26

IDP–IE/ 3DC35

IDP–IE/ 3M2C26

IDP–IE/ 3M2C35

IDP–IE/ 32M26

IDP–IE/ 32M35

Cat. No. indoor composite 3-phase D.S. w/ fuse base

IDP–EF/ 3DC26

IDP–EF/ 3DC35

IDP–EF/ 3M2C26

IDP–EF/ 3M2C35

IDP–EF/ 32M26

IDP–EF/ 32M35

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NOTES

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27089, 35th Avenue, Aldergrove, British Columbia, V4W 0A4, Canada Tel: 001-604-825-1250 Email: [email protected]

OVERHEAD DISCONNECTING SWITCH

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