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PU690 690V Voltage Indicator Proving Unit

NEW The Di-LOG PU690 enables you to prove your 2 pole voltage indicator by supplying a 690V AC voltage to the two input terminals.

Next Day Delivery (subject to availability)

£67.50 exc. VAT £81.00 inc. VAT £107.99 inc. VAT
  • High/Low Impedance
  • Low Battery Indicator
  • LED Indication
  • 690V Proving Unit
  • Batteries Included
  • FreeDelivery
  • 30DayMoneyBack
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  • Description
  • Features & Specification
  • Resources
  • Delivery (updated)

PU690 690V Voltage Indicator Proving Unit

690V Proving Unit for Voltage Indicators will light all LED’s to 690V on the CombiVolt and most other 2 pole voltage testers

The PU690 enables you to prove your 2 pole voltage indicator by supplying a 690V AC voltage to the two input terminals.  With the inbuilt load of 200k ohms, at 690V the current is limited to 3.5mA.  In addition, the PU690 is also suitable to prove High and Low Impedance devices such as multimeters and clamps proving unit to enable compliance safety checking of voltage indicators for safe operation prior to testing on a live circuit. 

The PU690 is designed with an ultra-bright LED high voltage output and low battery indicator clearly alerting the user during operation.

PU690 Key Features:

  • 690V AC Output
  • Designed to prove High/Low Impedance Instruments
  • Compatible with Voltage Testers and Multimeters
  • CAT II 750V Safety Rated

Is safe Isolation part of your testing regime?

“Adequate precautions shall be taken to prevent electrical equipment, which has been made dead in order to prevent danger while work is carried out on or near that equipment, from becoming electrically charged during that work if danger may thereby arise”.
Regulation 13 of the Electricity at work Regulations 1989

About Di-Log

Di-Log Test Equipment offers a comprehensive range of test equipment from a voltage indicator to 18th Edition and Thermal Imaging to portable  appliance testing kits.  All Di-Log instruments are designed and manufactured to the highest quality specification and you can be assured that all manufacturing processes adhere to internationally recognised standards.  Di-Log instruments are accurate, safe and rugged – you won’t find a better balance between cost and fitness for purpose.

PU690 Proving Unit Specification
Voltage Output 690V AC
Output current <3.5mA
Frequency 50 Hz
Load ≥200 KΩ
High Voltage LED Yes
Low Voltage LED Yes
Low battery indication ≤ 7.6V
Safety rating CAT II 750V
Operating temperature -10°C to 40°C at max
Storage temperature -10°C - 50°C
Relative humidity ≤70% non-condensing
Altitude Up to 2000m
Pollution Degree 2
Dimensions (H/W/D) 140mm x 80mm x 50mm
Weight (net) 400g
Power supply 6 x 1.5V (LR6) AA (supplied)
EAN 5060082543562


Delivery Notices (Updated March 29th 2021)

During the current situation surrounding the effects of the Coronavirus pandemic, logistics from every company are under immense pressure to deliver goods on time.
Coupled with manufacturers on reduced output due to more stringent working practices and a global shortage of component parts to supply UK manufacturing, we have taken the decision to 
temporarily limit our services rather than let our customers down amid these unprecedented circumstances.
We hope you will understand our position on this and we apologize unreservedly for the inconvenience we know it will cause.

Please note that ALL orders placed before 3:00pm are shipped same-day (subject to stock and any additional services required).
The stated transport times above have some scope for adjustment built-in for the Covid-19 situation. Carriers themselves also have their own extended workload and limitations at this time which are unfortunately beyond our control.

Orders requiring calibration 

Whilst we take the greatest care to get all orders dispatched and delivered to you in the stated time frame, orders received PM and requiring
calibration may on occasion miss dispatch that day, according to the complexity of the calibration. Be assured they will ship on the next dispatch
this in most cases should not add more than 24 hours to your delivery.

Bank/Public Holidays

Predicted delivery times are based on regular trading days Monday to Friday. Public holidays, bank holidays and weekends are outside the usual scope
of our dispatch and subject to activities/holidays of our carriers and therefore may incur additional days lead time to your order.

*UK Mainland (Revised March 2021)

Service  Price 
Standard FREE 2-3 Day Courier Delivery – UK Mainland only - Zones A & B - Order value OVER £75.00 ex VAT - Order by 3:0pm FREE
Standard FREE 2-3 Day Courier Delivery – UK Mainland only - Zones A & B - Order value UNDER £75.00 ex VAT - Order by 3:0pm £4.75
Next WORKING Day (excludes Saturdays, Sundays and public holidays)  – UK Mainland only - Zones A & B  - ANY order value - Order by 3:0pm      £7.75
Saturday ANYTIME Delivery - Order by 3:0pm £9.95

New Postage Map Sept 2018>

Delivery Surcharges

Because of the high cost of carriage, we regretfully need to apply a surcharge on all deliveries made in the following regions:

  • Zones A & B  - Mainland delivery rates apply. 
  • Zone C - Scottish Highlands (Charges are calculated at the checkout).
  • Zone D - Outer Hebrides, Orkney Isles, Shetland Isles, Isle of Man, Scilly Isles, and Channel Islands (Charges are calculated at the checkout).
  • Zone E - Northern Ireland (Charges are calculated at the checkout).
  • Zone F - Republic of Ireland (Charges are calculated at the checkout).

Offshore Services

All offshore deliveries are a 3-4 day service as standard. This includes Channel Islands, Northern & Southern Ireland, Scottish Islands, Isle of Man and the Scilly Isles.

International delivery

International delivery charges are automatically added to your order at the checkout. For any questions regarding international deliveries please contact us at


All export inquiries should be directed to the export division before placement of order.

If no shipping option is available to your selected country please call us FREE on 0800 0224 060 to purchase your items.
All stated prices are subject to VAT at the current rate where applicable.