Lambda Electronics 71 Instruction Manual - page 11
the "AC" breaker on again will restore operation. If the
supply is off for more than one minute the thermal delay-
relay may re-cycle before DC voltage will be present at
the output terminals. (see CAUTION note in paragraph 3
above).
b) HIGH VOLTAGE DC OUTPUT CIRCUITS:
An overload or short circuit of the "HV" output
will trip the "DC“ circu1t—breaker releasing the plate-
power·relay and disconnecting the plate-voltage from the
rectifier tubes of both the high-voltage DC and bias supplies.
Removing the overload or short-circuit and throwing the "DC"
breaker to the "ON" position will restore operation
immediately.
c) DC BIAS OUTPUT CIRCUIT:
The bias output circuit is so designed that it
may be short·circuited for indefinitely long periods of
time without damage to any component or effect on the high
voltage DC output.
5. INTERNAL POWER SUPPLY FAILURE PROTECTION:
a) In general, external overload of the output voltage
circuits will result in tripping of the circuit breakers.
Internal failure of the power supply components may result
in tripping of the breakers or blowing of the internal
protective fuses mounted as the rear of the unit. Failure
of F1, the I/2 ampere 3AG "Slo-Blo" fuse, indicates failure
of a component of the bias reference supply. Failure of this
fuse will probably require servicing of the power supply.
Refer to Section III for maintenance data before servicing
of equipment or replacement of the fuse.
NOTE: Failure of this fuse will result in removal
of voltage from all DC output terminals.
b) F2, a 10-ampere 3AG "Slo-Blo" input line fuse
located adjacent to F1 provides protection against failure
of the powerstat TA-1, Lambda Part No. TA-549, and input
wiring. This fuse will also protect the power supply in
event that the unit is accidentally plugged into a 220 VAC
circuit or into a DC.circuit. This fuse will not fail in
the case of overloads of the DC or AC output circuits.
Thls protection is provided by the circuit breakers.
9.