Durham Electric and Equipment Co. Ltd.

Durham Electric static, automatic and filtered capacitor controls use multiple, individual three phase capacitor cells. Automatic controls are equipped with capacitor rated contactors equipped with pre-insertion resistors, fused stages, control transformers, 120v control circuit, forced air ventilated with thermostat, status indicator lights and solid state 6, 8 or 12 step controller. See individual product data sheet for complete product dimensions and specifications

Capacitor Cell Specifications Standard cell type M50 Rated frequency 60Hz Maximum operating voltage 690 (Vn) Overvoltage
	1.1 (Vn) 8hrs/ day 1.15 (Vn) 30min/day 1.2 (Vn) 5min/200 times 1.3 (Vn) 1min/200 times

Internally delta connected Dielectric losses < 0.5 W/kVAR Overpressure safety device Factory installed discharge resistors Tolerance - 5% +10% Liquid filled, self healing Temperature class 55°C max Aluminum case
Enclosures - Automatic Controls	Enclosures - Static Units
Standard NEMA/EEMAC type 12 Rigid formed 12 GA steel construction Continuous welded seams Grounding stud with lug Hinged doors with locking provisions Forced air ventilated Floor mount with bolt down provision Lifting hooks Removable back panels ASA-61 polyester powder coat finish Drawing pocket Various standard sizes available	Indoor type 1 Rigid formed steel construction Minimum 14 ga Grounding stud Removable covers Louvered ventilation Wall, floor or combination mount ASA-61 Grey Polyester powder coat finish
Factory options Fused and non-fused disconnect switches Molded case circuit breaker Outdoor weather proof enclosures Space Heaters	Harmonic Filters Protected blown fuse indication Custom designs Internal power fuses
Product Approvals C.S.A. / E.S.A Service Pre service commissioning Power quality monitoring Field Service

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