SH Series 8 kW to 40 kW Regulated High Voltage DC Power Supplies	PDF Print Version HTML Print Version
Models from 0 to 1 kV through 0 to 100 kV. 8kW models are 17.5"H x 24.0" D. Weight is only 110 lbs.
Fully Compliant With The European harmonized EMI directive and with the low voltage directive, 73/23/EEC.			1 kV to 100 kV Rack Mount CE and Semi S2-93 Compliant

The SH series features two notable benefits 1: Glassman’s proprietary air-insulation technology — where air is used as the primary dielectric medium, in comparison to competitive models that utilize oil or epoxy. 2: Arc sensing and quench circuitry that will suppress arcing conditions and maintain the reliability and performance of the unit over the long term. Glassman’s SH series is ideally suited for a wide range of high voltage applications including: Ion Implantation, Electronic Beam Evaporation, Industrial Heating, and Particle Accelerator Beam lines. The SH can also be used as a reliable, general laboratory high voltage power supply.

While proving to be a cost-effective alternative to the more expensive competing models, the SH series provides a consistently high level of performance—a feature that customers have long recognized, and come to expect from Glassman High Voltage. As one of the recognized leaders in DC power supply Technology, Glassman has earned an enviable reputation for providing ultra-responsive customer service and outstanding product engineering support.

The SH series is CE Mark certified and can be utilized with the RS-232 digital interface option, which is now available for most of Glassman’s standard models. Glassman also offers a comprehensive three-year warranty.

Arc Quench. The HV output is inhibited for a short period after each load arc to quickly extinguish the arc.

Arc Sensing. Internal circuitry constantly senses and integrates arcs that occur over a given time. In the event a system or load arcing problem develops and exceeds factory-set parameters, the power supply will cycle off in an attempt to clear the fault and then automatically restart after a preset "off dwell time".

Pulse-Width Modulation. Off-the-line pulse-width modulation provides high efficiency and a reduced parts count for improved reliability.

Air Insulated. The SH Series features "air" as the primary dielectric medium. No oil or encapsulation is used to impede serviceability or increase weight.

Constant Voltage/Constant Current Operation. Automatic crossover from constant-voltage to constant-current regulation provides protection against overloads, arcs, and short circuits.

Current Trip. This feature may be substituted for constant-current operation by a rear panel selector switch.

Redundant Thermal Overload Protection. Thermostats and tachometer fan RPM sensing shut down the power supply due to over temperature or reduced fan speeds.

Low Ripple. Typically, ripple is less than 0.025% rms of rated voltage at full load.

Tight Regulation. Voltage regulation is typically better than 0.01% for allowable line and load variations. Current regulation is better than 0.1% from short circuit to rated voltage.

Higher Power Capability. Power supply modules can be paralleled up to 40 kW output power utilizing one master control module and up to four slave modules.

Differentially Coupled Analog Control Signals. All voltage and current programming and monitoring signalsare coupled to the user interface by true differential amplifiers. This provides for the ability to return the program and monitor commons to ground or system common at the source. This arrangement isolates the return wires and eliminates errors due to unwanted return currents flowing in these connections.

Warranty. Standard power supplies are warranted for three years; OEM and modified power supplies are warranted for one year. A formal warranty statement is available.

Specifications for 8 kW Power Supplies

(Specifications apply from 5% to 100% of rated voltage. Operation is guaranteed down to zero with a slight degradation of performance.)

(For 16 kW power supplies, unless otherwise indicated, the performance specification limits could be increased by a factor of up to 30%. For power supplies over 16 kW consult the factory.)

Input: 187-228 V rms, three-phase, 48-63 Hz, 11,500 VA maximum at full load (less than 35 A per phase). Inrush current is less than 45 A with a nominal decay time constant of 60 ms. Four 10-32 studs for AC line connection with a safety cover and strain relief are provided. For systems 16 kW and greater, a separate AC input connection is required for each additional slave chassis.
Mains service must be protected with fuses or circuit breakers with a maximum rating of 125 A and a minimum interrupting capacity of 50,000 A.

Efficiency: Typically 85% at full load.

Output: Continuous, stable adjustment from 0 to rated voltage/current by means of panel-mounted 10-turn potentiometers (0.05% resolution), or external 0 to +10 V signals. Repeatability better than 0.1% of setting.

Voltage programming accuracy: 0.5% of setting + 0.2% of rated output. Resolution is a function of the programming method used. External voltage programming is differentially coupled with a maximum common mode voltage of ±3 VDC.

Voltage Regulation: Better than ±0.005% for specified line variations and 0.01% + 10 mV/A for no load to full load variations.

Current Regulation: From short circuit to rated voltage at any load condition: 1 kV to 6 kV: Better than 0.5%. 8 kV to 100 kV: Better than 0.2%

Voltage Monitor: 0 to +10 V equivalent to 0 to rated voltage. Accuracy, 0.5% of reading + 0.2% of rating. Output impedance is 10 K Ohm differentially coupled.

Current Monitor: 0 to +10 V equivalent to 0 to rated current. Accuracy: 1 kV to 6 kV: 1.5% of reading plus 0.5% of rated output. 8 kV to 100 kV: 1% of reading plus 0.2% of rated output. Output impedance is 10 kΩ differentially coupled.

Ripple: Better than 0.025% of rated voltage +1 V RMS at full load.

Stored Energy: See Models chart.

Stability: 0.01% per hour after 1/2 hour warm-up, 0.05% per 8 hours.

Voltage Rise Time Constant: 200 ms for 8 kV to 100 kV models and 50 ms for 1 kV to 6 kV models typical, using either HV enable or remote programming control.

Voltage Decay time constant: Decay time constant is a function of the applied load. The decay time constant will be equal to the rise time constant with a minimum load of 5% of rated maximum.

Temperature Coefficient: 0.01%/° C.

Ambient Temperature: -20 to +40° C, operating; -40 to +85° C, storage.

Polarity: Available with either Positive, Negative, or Reversible polarity with respect to chassis ground.

Protection: Automatic current regulation protects against all overloads, including arcs and short circuits. Thermal switches and rpm sensing fans protect against thermal overload. Circuit breaker, fuses, surge-limiting resistors, and low energy components provide ultimate protection.

Arc Quench. Optional on models 1 kV through 6 kV; standard on models 8 kV through 100 kV. An arc quench feature provides sensing of each load arc and quickly inhibits the HV output for approximately 20 ms after each arc.

Arc Sensing. Optional on models 1 kV through 6 kV; standard on models 8 kV through 100 kV. Internal circuitry senses the number of arcs caused by external load discharges. If the rate of consecutive arcs exceeds approximately one arc per second for five arcs, the supply will turn off for approximately five seconds to allow clearance of the fault. After this period, the supply will return automatically to the programmed output voltage value with the voltage rise time constant indicated. If the load fault still exists, the above cycle will be repeated.

Current Limit: In current limit mode the power supply will regulate the load current at the programmed current level with automatic crossover between voltage and current regulating modes.

Current Trip: A switch located on the rear of the control panel assembly allows the selection of current limit or current trip operation. When the switch is set to current trip mode, the HV output will disable and latch off when the load current reaches the programmed current level. Reset is accomplished by either cycling the AC power, toggling the HV enable signal, or by pushing the HV off/reset and then the HV on switches.

Front Panel Elements. The front panel contains all local control functions and remote/local selector switches. These control functions are: AC power on/off circuit breaker and indicator light, separate 10-turn controls with locking vernier dials used to set voltage and current levels, high voltage on switch, and high voltage off/reset switch. LED's indicate: when high voltage is on, output polarity, interlock, fault status, and whether the supply is operating in a voltage or current regulating mode. Output levels are indicated by voltage and current digital meters. Remote/local switches are provided for voltage and current programming and HV on/off functions.

Slave Front Panel Elements. (When applicable). AC power breaker/switch and indicator. Bias, tracking (over voltage), and thermal overload/low fan speed indicators. Slave current and voltage service test points.

Remote Control Interface. All standard SH family power supplies provide a user's remote interface. The signals provided are:

Inputs: Safety interlock, output voltage and current program signals, high voltage enable and connections for remote HV on and off pushbuttons.

Outputs: Output voltage and current monitor signals, HV enable status, I/V regulation mode status, fault status, and a +10 V reference source. Signal common and ground reference terminals are also provided. Toggle switches on the rear of the control chassis select either current limit or current trip operation and local or remote HV enable.

External Interlock: Open = off, closed = on. Normally latching except for "NC" option supplies where it is non-latching. The interlock indicator LED is lit when the interlock is open.

HV Enable:
Remote Mode: 0 - 1.5 V = OFF,2.5 - 15 V = ON.
Local Mode: The HV output is permanently enabled. HV Enable, Fault and I/V Regulation Status: Each are a set of form "C" relay contacts.

Accessories: Detachable, 8 foot, shielded high voltage coaxial cable provided. Models 16 kW and above are provided with an additional HV cable per slave module. A 25 pin D-subminiature connector for customer interface is provided. All chassis interconnection cables are provided.

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8kW Models

16kW Models

For Models Greater Than 16 kW, Please Consult Factory.

8kW Models

16kW Models