SSR Series Voltage Regulators
2
TheSSRVoltageregulatoris completely solidstate and uses
state-of-the-art circuitry to provide high performance with a
wide range of standard features. Voltage is internally or
remotely adjustable, with single-phase or three-phase cus-
tomer selectable sensing over a wide range. The SSR has a
variable frequency compensated operating characteristic
(See Figures 1 and 2).
During start-up, the solid state voltage build-up circuit
operates from generator output residual voltages as low
as 5% of nominal. The built-in over-excitation limiting
removes the output power if the exciter field voltage
exceeds a predetermined level. After removing field
power, the regulator maintains its shutdown state until the
OUTPUT POWER:
DESCRIPTION
SPECIFICATIONS
generator has decreased below 5% of nominal.
The SSR may also be used with generator equipped with
single-phase permanent magnet generators (PMG) for
excitation power. With this application or applications
where a power isolation transformer is incorporated, use
suppression chassis P/N 9261500100 or P/N 9261500101,
supplied with each regulator.
Maintenance of the SSR voltage regulator is simplified by
the use of replaceable modules. Sensitive electronic
equipment is protected from the effects of moisture,
contaminants, vibration, and shock, by encapsulation.
SSR Continuous Forcing Continuous Forcing
Model Voltage* Voltage* Current Current
SSR 32-12 32 Vdc 50Vdc 12Adc 20Adc
SSR 63-12 63Vdc 100Vdc 12Adc 20Adc
SSR 125-12 125Vdc 200Vdc 12Adc 20Adc
*At 115V input on SSR 32-12 and SSR 63-12 and at 230V input on SSR125-12.
EXCITER MINIMUM FIELD DC RESISTANCE:
SSR Field
Model Resistance
(Minimum)
SSR 32-12 2.5 ohms
SSR 63-12 5.0 ohm
SSR 125-12 10.0 ohms
POWER DISSIPATED: Less than 30 Watts
AC INPUT POWER: Designed for 50/60 Hz, self-
excited, or 50-240 Hz separately-excited (PMG) applica-
tions.
SSR Model Rated Voltage Burden
SSR 32-12 90 to 153 Vac, single phase,
50 to 240 Hz 700 VA
SSR 63-12 90 to 153 Vac, single phase,
50 to 240 Hz 1200 VA
SSR 125-12 170 to 305 Vac, single phase,
50 to 240 Hz 2400 VA
AC INPUT SENSING: Designed to regulate generator
voltage at any frequency from 50 to 400 Hz
50 Hz Voltage 60/400 Hz Voltage
90-110 Vac 90-132 Vac
170-242 Vac 187-264 Vac
340-457 Vac 374-528 Vac
540-660 Vac
INPUT SENSING BURDEN: 3.5 VA per phase nominal.
PARALLELING COMPENSATION INPUT: 5A from
Current Transformer with 10 VA maximum burden at 0.8 pf
REGULATION ACCURACY: ±0.25% from no-load to rated
THERMAL STABILITY: ±0.5% voltage variation for any
50o C (90oF) temperature change within operating tempera-
ture range.
FREQUENCY COMPENSATION: Refer to Figures 1 and
2. Select from 50 or 60 Hz and a V/Hz or 2V/Hz curve in
the field.
VOLTAGE BUILD-UP: From 5% of nominal.
TRANSIENT RESPONSE TIME: 1.5 cycles @ 60 Hz.
VOLTAGE ADJUST RANGE: External adjustment —
±10% of nominal. Internal adjustment minimum — see
below:
Tap Minimum Adjustment Range
120 90-132 Vac
240 170-264 Vac
480 340-528 Vac
600 540-660 Vac
STORAGE TEMPERATURE RANGE: - 40o C (- 40oF) to
+85oC (+185oF).
OPERATING TEMPERATURE RANGE: - 40o C (- 40oF)
to +70oC (+158oF).
SHOCK: Withstands 15 Gs in each of three mutually
perpendicular planes.
VIBRATION: Withstands the following:
Frequency Force
5- 26 Hz 1.2 G
27- 52 Hz 0.036 inch double amplitude
53-1000 Hz 5.0 G
WEIGHT: 12 lbs (5.5 kg) net
15 lbs. (7.0 kg) shipping
