Electrical Safety Check - VWR Mega Star 600R Service Manual

Electrical Safety Check

ATTENTION!
A final electrical safety check must be performed after each maintenance and/or repair!
 Resistance check of protective conductor
The measuring value of the resistance between the mains plug's grounding pin and the
grounding conductors of the motor, electronic chassis and the casing must not exceed 200m
Caution!
 Insulation resistance check
Check also the insulation resistance between the poles of the mains plug and the grounding
conductor; the resistance value must be more than 2 M
 Accessible current measured to IVD medical equipment regulation
The accessible current must not exceed 0.5 mAmps in single fault condition (interrupted
protection earth wire)!
L (N)
N (L)
PE
Steckergehäuse / plug-in casing
0,22µF

1500
±5%
±5%
500
±1%
Körperstrom:
accessible current: I [mA] = U [mV] / 500:
U
max
10k
±5%
0,022µF
AC
±5%

= 250mV I = 0,5mA
max
SERVICE 2-20
Spezifaktionen für Meßgerät
- TRMS, DC - 5kHz oder mehr

- Eingangswiderstand > 1M
- Toleranz 5% oder besser
- Crest Faktor 5 oder besser
V
Specifaction for the meter
- TRMS, DC - 5kHz or more

- Input resistance > 1M
- Tolerance 5% or better
- Crest Factor 5 or better