T&R KV50-20D mk2, Руководство по эксплуатации и техническому обслуживанию

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If the test circuit includes capacitors, each capacitor should be grounded separately before
connections are made or broken. In the case of capacitors connected in series, the intermediate
terminals should also be grounded.
It is good practice for all capacitive devices to remain short-circuited when not in use.
2.2.6 High voltage connection
The high voltage output from the KV50-20D MK2 is via the bushing connection on the top of the
HV transformer. No HV output lead is supplied with the unit. The HV connection should either
be made with a suitable copper tube formed as required (15mm copper plumbing pipe is ideal)
or with tinned copper wire.
The HV connection to the test object must be made securely, and suitable stress relief
components should be used where required to keep electrical stresses within acceptable limits.
Avoid sharp points on the connections in the high voltage circuit – these will lead to corona
discharge, electrical noise and ozone generation.
2.2.6.1 High voltage output clearances
Adequate clearances must be maintained between the following parts and any other conducting
object (whether earthed or not):

HV output connection and all parts connected to it

Non-grounded parts of test object
Any part of the test object not connected to earth should be considered live at the test voltage.
Particular attention should be paid to clearances between any parts of the test object at test
voltage potential and the test enclosure or barriers.
EN50191 defines the safety clearance around the high voltage circuit as the prohibition zone
and stipulates that is must not be possible for personnel or their tools to touch this zone. The
prohibition zone distance for the unit is shown below.
Unit Voltage Prohibition zone
KV50-20D MK2 50kV 280mm
EN50191:2000 also details suitable barrier types and heights such that the prohibition zone
cannot be reached by personnel.
If used with temporary barriers the barriers should be at least 1m high and 2m away from live
parts (1.4m cle 280mm prohibition zone + extra factor of safety).
Always refer to the latest version of EN50191 and local health and safety information for
clearances.