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 of America
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Product
Surge Suppressor to Suppress SCR Spikes from Customer Equipment Going Back to Utility Power, P/N 5965C
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This Suppressor Board is ideal for SCR Controlled Power Supplies when SCR control is on the primary side.The Suppressor Board will prevent SCR spikes to go back into the 480 VAC utility power lines.
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Product
Custom DC to DC Converters
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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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Product
Rotating Diode Assembly, P/N 6118CA
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CEHCO is a specialist in the repair of Rotating Diode Assemblies.
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Product
Replacement Selenium Rectifiers
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Selenium rectifier stacks are made up of selenium cells, which are mounted together and circuited as required for each application. They are available in configurations to suit all of the rectifier circuits.
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Product
MRI POWER SUPPLIES
MRI Series
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Input: 208 VAC ± 5 %, 3 PH, 60 HzOutput: 120 VDC fixed, 20 AmpsPower: 2.4 KWRipple: 5 %Enclosure: NEMA 1(20″ H x 16″ W x 9″ D)Weight: 125 lbs
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Product
12 Pulse SCR Controlled High Voltage Power Supply
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- 12 Pulse SCR Controlled Power Supply, P/N 19435PS- Input: 480 VAC, 300 Amps, 3 PH, 60 Hz- Output: 0 to 3000 VDC ± 10%, 80 Amps max adjustable with potentiometers, and 4/20 mA input signals from the PLC- Output voltage and current are provided as 4/20 mA signals to PLC- Contactor and overload relay are installed for protection- Power ON Light- Start / Stop capability- EPO capability- Manual voltage control and current limit- PLC interface- Output voltage and current are displayed on the voltmeter and ammeter.- A selector switch is used to select between manual Control or PLC Control- The customer is responsible for the PLC controller and PLC programming- Power enclosure, 68″H x 65″W x 44″D- Control enclosure: 20″H x 16″W x 9″D- Weight: 5000 lbs. approximately- All input/output connections are inside the enclosure
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Product
SCR, Diodes & Assemblies
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SCR and Diodes are available as assemblies or discrete parts. Most assemblies are encapsulated. CEHCO stocks a variety of rectification products such as Diodes, SCR’s (silicon-controlled rectifiers), and Encapsulated Assemblies. We SCR and diodes replacement specialist. We specialize in obsolete and hard-to-find SCR and diode assemblies. We can offer an equivalent replacement for most obsolete rectification devices.
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Product
SCR Diode Testers
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SCRs and Diodes are used in the power sections of various power systems. A SCR Diode Tester is an important piece of equipment to determine if a SCR or a diode is defective in a power circuit. It is difficult and time-consuming to troubleshoot SCRs and Diodes with a digital meter.
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Product
SCR CONTROLLED DC POWER SUPPLY
PS Series
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Variable DC power supplies are AC to DC power supplies with a variable DC output. The output can be varied with an SCR controller. The AC input power can be single phase or three phases. With single phase AC input, the DC output ripple is very high (50%). With three phase AC input, the DC output ripple is low (5%). This would be a key benefit for selecting three phase AC input instead of single phase.
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Product
Two Diode Assembly, P/N 6030C
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Two Diode Assembly, P/N 6030CEach diode is rated for 400 Amps, 1200 PIVTwo diodes are installed on one heatsinkDimensions: 8”H x 8”W x 10”DEstimated weight: 20 lbs.When A is greater than B, Battery 2 is reversed BiasWhen B is greater than A, Battery 1 is reversed Bias
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Product
MOTORIZED VARIABLE TRANSFORMER CONTROLLED POWER SUPPLY
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Motorized Variable Transformer Controlled Power Supply, P/N 18534PSInput: 460 VAC, 3 PH, 60 HzOutput: 0 to 250 VDC, 200 Amp max.Variable Transformer is used to vary the output. SCR controller is not used, as it generates harmonics.Input control is 0 to 3.6 VDC.Indoor enclosure.Output voltage and current feedback as 4/20 mA for PLC interface.All input/output connections are inside the enclosure
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Product
DC POWER
VARIABLE TRANSFORMER
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Variable DC power supplies are AC to DC power supplies with a variable DC output. The output can be varied with a Variable Transformer (also known as variac). The Variable Transformer can be adjusted manually or with a motorized control. The AC input power can be single phase or three phases. With single phase AC input, the DC output ripple is very high (50%). With three phase AC input, the DC output ripple is low (5%). This would be a key benefit for selecting three phase AC input instead of single phase.
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Product
Selenium Surge Suppressor
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Surge suppressors are used to protecting circuits from transients (sudden, brief increases in voltage). Transients of widely varying magnitudes are caused by such circuit components as motors, coils, magnets, relays, and transformers. They are found in all electrical systems and are notorious for damaging diodes, SCRs, transformers, triacs, and relay contacts.
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Product
Repair of Six Diode Bridge Assemblies, P/N 5989C
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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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Product
AC to AC Programmable Power Sources
AFV-P Series
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Rating:600 VA to 5 KVASingle Phase OutputOutput frequency: 45 Hz to 500 Hz (Optional for 15 Hz to 1000 Hz)
