RE: Surge protection for SLA-500s

Date: Wed Jun 03 1998 - 07:12:02 EEST


Due to some very erratic power in this part of the world, we use locally
made automatic voltage regulators. The specifications are:

Input: 208VAC +/- 15%
Output: 208VAC +/- 1.5%
Capacity: 80A/phase; three phase with neutral.
Response Time: 0.02 seconds/volt
Cost: about US$6,500

This AVR is connected after the transformer. 3D has looked at the
system and the field service people are satisified with the
installation. However, they would have preferred 100+A capacity to make
the breaker in the control panel the safety valve and not the AVR. We
monitored the power throughput of the SLA and found that it max'ed at
65A, so we went with the smaller unit (cost savings) and have had no
problems. Getting an AVR with a neutral lead is important as the
balance between phases is adversely affected without it.

Dan Davis
Head, RP&M Division
Hicom Industrial Estate
Batu Tiga, PO Box 7100
Shah Alam, 40918 Selangor MALAYSIA
+60 3 515-2380

> ----------
> From: Denton, Karl R.
> KD1588[]
> Sent: Wednesday, June 03, 1998 1:27 AM
> To: 'Rapid Prototyping Mailing List'
> Subject: Surge protection for SLA-500s
> Hello All,
> I would like to know in any of you that are still using SLA-500s use
> any
> type surge protection and if so what is it?
> We have had several instances where we have lost various cards or hard
> drives on our SLA and then there is the laser!
> Karl
> For more information about the rp-ml, see

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