Carl E. Holmes Company
CEHCO provides SCR and Diode Rectifiers for a variety of applications that includes anodizing, water treatment, general metal finishing, crane duty, electrochemical applications, and the latest development in power conversion technology.
- (714) 666-0787
(714) 624-4740 - quote@cehco.com
- 1139 N. Kraemer Place
Anaheim, CA 92806
United States
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Repair of Six Diode Bridge Assemblies, P/N 5989C
CEHCO is specialist in repair of various rectifier assemblies. One such assembly is shown below:Specifications:- Six Diode Bridge Assembly, P/N 5989C- AC input terminals: (3, 4 , 5)- DC output terminals: (1), POSITIVE and (2), NEGATIVE
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SCR Controller with Regulator
The SCR Controller and the Regulator Board are used in SCR controlled power supplies.CEHCO offers single phase and three phase SCR Controllers with Regulator Boards.
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AC to DC Unregulated Power Supply
CEHCO is a specialist in AC to DC Unregulated Power Supply. We can offer the followings:Input power can be single phase (1 PH) or three phase (3 PH)DC output voltage up to 1000 VDC maxDC output current up to 1500 Amps max
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AC to AC Non-Programmable Power Sources
AFC Series
CEHCO can supply AC to AC Non-Programmable Power Sources. We offer standard or customized solutions. The AFC Series is from 500 VA to 2000 KVA.
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5000 AMP DC Rectifier - Air Cooled, P/N 6037C1
Air Cooled SCR Controlled Power Supply, 50 KW, P/N 6037C1Input: 480 VAC, 60 Amps, 3 PH, 60 HzOutput: 6 to 10 VDC, 5000 Amps maxContactor and overload relay are installed for protectionStart / Stop capabilityEPO capabilityManual voltage control and current limitOutput voltage and current are displayed on the voltmeter and ammeterIndoor enclosure, 68″H x 65″W x 36″DAll input/output connections are inside the enclosuresEstimated weight: 1000 lbs.
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Refurbished Rectifiers
CEHCO has a large inventory of used and refurbished rectifiers in stock. All include 3 month part warranty.
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Custom DC to DC Converters
CEHCO is manufacturer, re-seller, and distributor of Power Rectification products such as DC Rectifiers, Transformer Rectifier Assemblies, and Custom Power Supplies since 1945.
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HIGH VOLTAGE SCR CONTROLLED POWER SUPPLY
xPS Series
High Voltage SCR Controlled Power Supply, P/N 18278PS Power Rating: 350 KW. Input: 480 VAC, 3 PH, 60 Hz Output: 0 to 5000 VDC, 70 Amps max Ripple: 2 % approximately at maximum rated voltage Configuration: 12 pulse externally SCR controlled rectifier system Protection Devices: Input contactors Overload relay shutoff Input surge suppressor Thermal switches Output current limiting resistor (made with 5 Ohm Kanthal heating element) Emergency power shutoff Cooling: Each 6 pulse rectifier assembly is cooled by three 10” fans Interface: 4/20 ma converter interface for output voltage and output current to SCR controller. Enclosure: The overall dimension of the unit is (78”H x 38”W x 53”D). It is comprised of two separate enclosures each with dimensions of (78” H x 38” W x 26” D) which are integrated together to form a single enclosure. Each half enclosure has one 6 pulse transformer and one 6 pulse high voltage rectifier. Weight: Approx. 5000 lbs. SCR Controller: The 12 pulse SCR controller is supplied by the customer. We were responsible for the 12 pulses Transformer and 12 pulses Rectifier section. Portability: Unit can be lifted up with a fork lift. It can also be moved around with a 5000 lb pallet jack. Transformer: Two 200 KVA transformers are used to step 480 VAC to 3750 VAC each in a 12 pulse configuration Rectifiers: Two 6 pulse rectifier assemblies capable for 5000 VDC and 60 Amps output were used. The high voltage rectifier assemblies are isolated and protected in a fiberglass plenum within the enclosure. Blocking Diode: Each diode of the 6 pulse rectifier consists of 10 diodes in series to offer a blocking voltage of 12000 V (PIV)
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Bipolar Power Supply, 0 to ±50 VDC, 100 AMPS, 10 KW, P/N 19215PS
Specifications:Bipolar Power Supply, 10 KW, P/N 19215PSInput: 220 / 230 / 240 VAC, 46 Amps, 1 PH, 50 HzOutput 1: 0 to ± 50 VDC, 100 Amps max, Upper SectionOutput 2: 0 to ± 50 VDC, 100 Amps max, Lower SectionEnclosure: 42″H x 32″W x 22″DAll connections are inside the enclosureThis unit is a dual output power supply
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Rotating Diode Assembly, P/N 6118CA
CEHCO is a specialist in the repair of Rotating Diode Assemblies.
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AC to AC Power Supplies, Output 0 to 25 VAC, 3000 AMPS, 75 KW, P/N 5955C
- AC to AC Power Supply, 84 KVA, 1 PH, 60 Hz, P/N 5955C- Input: 240 VAC, 350 Amps- Output: 0 to 25 VAC, 3000 Amps max- Back to back SCR is used to adjust the output voltage- Start / Stop push button- Power ON Light- Voltmeter and Ammeter are included to monitor output voltage and current- Indoor enclosure: 42″H x 32″W x 22″D- Estimated weight: (TBD)
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Transformer Rectifier Assemblies
Transformer rectifier assemblies are very useful in OEM applications when unregulated DC output is required. Input power can be single-phase or three phases. With single-phase input power, the output ripple is 50%. With three-phase input power, the output ripple is 5%. A 5% output ripple is a clear advantage. Hence, transformer rectifier assemblies with three-phase input power are more popular. Circuit breakers, fuses, voltmeters, and ammeters can be added per customer requirements. The assemblies can be an open frame or inside an indoor enclosure.
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Anodizing/Electroplating/Metal Finishing DC Rectifiers
CEHCO can supply Anodizing / Electroplating / Metal Finishing DC Rectifiers. We offer standard products and customized solutions.
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12 Pulse Diode Bridge Rectifiers Inside Fiberglass Plenums, P/N 5872C4-2
- 12 Pulse Diode Bridge Rectifier, P/N 5872C4-2- Each diode is rated for 60 Amps, 1800 Volts peak- Dimensions: 50″L x 40″W x 20″H approximately- Four 10″ fans are used for coolingFour 10″ fans will force cool from the bottom of the Plenum. 12 diode assemblies (each diode consists of nine diodes in series are integrated together inside the Plenum). The output is rated for 3000 VDC, 80 Amps.
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High Voltage Power Supplies
High voltage SCR controlled power supplies require the following:Output voltage is high. Output current is generally Low.Voltmeter and ammeter display the output voltage and current under load.Potentiometers are used to adjust output voltage and limit output current from minimum to maximum.
