Glassman SH系列高壓電源特點(diǎn)
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 panelmounted
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:
1-6kV: Better than 0.5%, 8-100kV: 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 setting plus
0.5% of rated output. 8 kV to 100 kV: 1% of setting plus 0.2% of rated output. Output impedance is 10 K Ohm differentially coupled.
RIPPLE:
Better than 0.025% of rated voltage +1 V RMS at full load.
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, surgelimiting 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 COUNT:
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.
