This magneto-electric ammeter measures DC and sinusoidal AC currents. A novel gas tube based protection system and high power diodes provide very effective protection against overloading, even on very low ranges, e.g. 380V on the 30 μA range.
EASY TO READ
Economically priced ammeters often have two scales for AC and two for DC, as a result of the absence of a step-up transformer to compensate for the non-linear behaviour of the rectifying diodes. The pupil has to choose which of the four scales to read.
The PSY30UA, equipped with a multi-primary step-up transformer uses the same scale for both AC and DC. The 0-100 scale is located above the antiparallax mirror, the 0-30 scale (with 60 divisions) below it.
RANGES 10A and 20A
Designed for tests on rotary machines, these ranges support permanent nominal currents of 10 and 20A. They are unprotected, but take the following overloads without being destroyed:
• 10A range: 20A for 5 minutes, 40A for 5 seconds
• 20A range: 40A for 5 minutes, 80A for 5 seconds
OTHERS CHARACTERISTICS
• Safety terminals
• Anti-flash switch with silver contacts
• The 2mm space between contacts protects the switch from arcing due to
voltage overload.
• Scale length 125 mm with antiparallax mirror
• Taut band mechanism
• Dimensions 196 x 147 x 70mm Weight 1.4kg
EASY TO READ
Economically priced ammeters often have two scales for AC and two for DC, as a result of the absence of a step-up transformer to compensate for the non-linear behaviour of the rectifying diodes. The pupil has to choose which of the four scales to read.
The PSY30UA, equipped with a multi-primary step-up transformer uses the same scale for both AC and DC. The 0-100 scale is located above the antiparallax mirror, the 0-30 scale (with 60 divisions) below it.
RANGES 10A and 20A
Designed for tests on rotary machines, these ranges support permanent nominal currents of 10 and 20A. They are unprotected, but take the following overloads without being destroyed:
• 10A range: 20A for 5 minutes, 40A for 5 seconds
• 20A range: 40A for 5 minutes, 80A for 5 seconds
OTHERS CHARACTERISTICS
• Safety terminals
• Anti-flash switch with silver contacts
• The 2mm space between contacts protects the switch from arcing due to
voltage overload.
• Scale length 125 mm with antiparallax mirror
• Taut band mechanism
• Dimensions 196 x 147 x 70mm Weight 1.4kg
Eigenschappen
- PSY30UA/ELE